Table 6.22 -- EDCS Attributes whose label begins with S
| Label | Definition | Attribute value type | EQ label | Related concepts | Code |
| SAFE_HORIZ_CLEARANCE | The minimum safe horizontal distance between adjacent structures on either side of a navigable channel. | REAL | LENGTH | 939 | |
| SALINITY | The ratio of mass of dissolved material in seawater to the mass of seawater. | REAL | MASS_FRACTION | 940 | |
| SAND_DUNE_ORIENTATION | The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the characteristic alignment of a dune as caused by the prevailing winds. | REAL | PLANE_ANGLE | 941 | |
| SCND_ANTENNA_POSITION | The position of the secondary antenna in terms of fractional deployment from a fully stowed/retracted state. | REAL | PURE_NUMBER | 942 | |
| SCND_BREAKERS_HEIGHT | The mean height, measured from trough to crest, of the secondary breaking waves. | REAL | LENGTH | 943 | |
| SCND_BROADCAST_FREQUENCY | The secondary broadcast frequency of a communications device. | REAL | FREQUENCY | 944 | |
| SCND_DOOR_POSITION | The position of the secondary door in terms of fractional opening from a fully closed state, where the fully open represents, e.g., a 180 arc degree rotation from the initial position or fully (slid/retracted) open. | REAL | PURE_NUMBER | 945 | |
| SCND_MATERIAL_TYPE | The type of secondary material composition of an object. | ENUMERATION | EA PRI_MATERIAL_TYPE, EA SURFACE_MATERIAL_TYPE, EA UNDERLYING_MATERIAL_TYPE | 946 | |
| SCND_NAV_SYSTEM_TYPE | The secondary technology (e.g., equipment or system) used in electronic navigation. | ENUMERATION | 947 | ||
| SCND_OPERATING_RANGE | The secondary range of the NAVAID beyond which the capture of the signal is not completely assured. | REAL | LENGTH | 948 | |
| SCND_ROUTE_DESIGNATION | The alternative official route designation (e.g., "I-95", "A-1", or "M-2") assigned to an object. | STRING | EA PRI_ROUTE_DESIGNATION | 949 | |
| SCND_SRF_THERMAL_CONDITION | The physical boundary condition at the primary surface, generally the top, front, or outer side of a material layer or object, accounting for an object's interface with the environment at that surface. | ENUMERATION | EA PRI_SRF_THERMAL_CONDITION | 950 | |
| SCND_SURFACE_AIR_VELOCITY | The air velocity at the secondary surface, generally the bottom, back, or inner side of a material layer or object. | REAL | VELOCITY | EA PRI_SURFACE_AIR_VELOCITY | 951 |
| SCND_SURFACE_TEMPERATURE | The temperature of the medium in contact with the secondary surface, generally the bottom, back, or inner side of a material layer or object. | REAL | THERMO_TEMPERATURE | EA PRI_SURFACE_TEMPERATURE | 952 |
| SCND_TRAFFIC_DIRECTION | The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of traffic, second occurrence. | REAL | PLANE_ANGLE | 953 | |
| SCND_TRAVEL_WAY_WIDTH | The minimum width of a second travelled way implementing the shorter width distance, excluding hard pavements and shoulders. | REAL | LENGTH | 954 | |
| SCND_WAVE_DIRECTION | The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction from which secondary waves in the ocean spectra are arriving. | REAL | PLANE_ANGLE | 955 | |
| SCND_WEAPON_POSITION | The position of the secondary weapon system in terms of fractional deployment from a fully stowed/retracted state. | REAL | PURE_NUMBER | EA SCND_WEAPON_POSITION_CODED | 956 |
| SCND_WEAPON_POSITION_CODED | The categorical position of a secondary weapon system. | ENUMERATION | EA SCND_WEAPON_POSITION | 957 | |
| SCRAP_TYPE | The type of scrap within the delineated object's extent. | ENUMERATION | 958 | ||
| SEARCH_LIGHT_INTENSITY | The fraction of maximum intensity of moveable external lighting used to illuminate the environment in arbitrary directions, e.g., spotlights or flashlights. | REAL | PURE_NUMBER | 959 | |
| SEASON | The division of the year (one of four), marked by the passage of the sun through an equinox or solstice. | ENUMERATION | 960 | ||
| SEASONAL_TENT_LOCATION | The seasonal habitat location of a nomadic people. | ENUMERATION | 961 | ||
| SECOND_BEACON_SECTOR_LIMIT | The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the second limit of a light or radio transponder beacon sector. | REAL | PLANE_ANGLE | EA FIRST_BEACON_SECTOR_LIMIT | 962 |
| SECOND_BOUNDARY_SIDE_NAME | The name of the political entity on the second side of a boundary line. | STRING | EA FIRST_BOUNDARY_SIDE_NAME | 963 | |
| SECONDARY_MATCHAR | The characteristics of the secondary material composition of an object. | ENUMERATION | EA UNDERLYING_MATCHAR | 964 | |
| SECONDARY_NAME | A touristic name for an object that exists in addition to a geographic name. | STRING | 965 | ||
| SECTOR_DIRECTION | The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of an angular sector for which the measurement applies. | REAL | PLANE_ANGLE | 966 | |
| SECURITY_LEVEL | The highest level of security associated with an object. | ENUMERATION | 967 | ||
| SED_ATTENUATION_EXPONENT | The quantity of frequency dependence of the absorption and scattering of acoustic energy as it travels through the seafloor in water depths of 200 metres or less. | REAL | PURE_NUMBER | 968 | |
| SED_ATTENUATION_GRADIENT | The rate of change with respect to depth below the ocean floor of the distance and frequency gradient of the absorption and scattering of acoustic energy travelling through ocean floor sediment. | REAL | POWER_LEVEL_LENGTH_FREQ | 969 | |
| SED_AVERAGE_BKGND_THICKNESS | The average background thickness of the sediment layers located just below the surface of the sea floor. | REAL | LENGTH | 970 | |
| SED_BASEMENT_REFLCT_COEFF | The quantity of reflected acoustic energy relative to the incident acoustic energy at the ocean sediment/basement interface. | REAL | PURE_NUMBER | 971 | |
| SED_BELOW_LAYERS_DENSITY | The density of sediment layers located below near-surface seafloor sediments. | REAL | VOLUMIC_MASS | 972 | |
| SED_CMPRS_ATTENUATION | The depth and frequency gradient of absorption and scattering of acoustic energy caused by compression as it travels through a layer of ocean floor sediment. | REAL | POWER_LEVEL_LENGTH_FREQ | 973 | |
| SED_CMPRS_SNDSPD | The compressional speed of sound in ocean floor sediment. | REAL | VELOCITY | 974 | |
| SED_CONDUCTIVITY | The electrical conductivity of ocean floor sediment. | REAL | ELECTRIC_CONDUCTIVITY | 975 | |
| SED_GROSS_BOT_LOSS_CLASS | The gross bottom loss descriptor/class indicating general acoustic propagation conditions; used for linking to an external database or reference. Ranges in value from 1 to 9; zero indicates "land" and -9 indicates a region of no data. | INTEGER | PURE_NUMBER | 976 | |
| SED_LAYER_DENSITY | The ratio of the mass of a sample taken of the specified sediment layer at the bottom of the ocean to the volume occupied by the sample. | REAL | VOLUMIC_MASS | 977 | |
| SED_REFLECTIVITY_ANGLE | The angle between the sea floor and an acoustic ray that is reflected from the sea floor. | REAL | PLANE_ANGLE | 978 | |
| SED_SHEAR_ATTENUATION | The depth and frequency gradient of absorption and scattering of acoustic energy caused by shear as it travels through the layer of ocean floor sediment. | REAL | POWER_LEVEL_LENGTH_FREQ | 979 | |
| SED_SNDSPD_CURVATURE_PARM | The sediment sound speed profile curvature parameter. | REAL | PURE_NUMBER | 980 | |
| SED_SNDSPD_GRAD_TOP | The rate at which sound speed changes with depth in the sediments, evaluated at the sea floor (water-sediment interface). | REAL | RATE | 981 | |
| SED_SNDSPD_SHEAR | The shear speed of sound in ocean floor sediment. | REAL | VELOCITY | 982 | |
| SED_SRF_ATTENUATION | The distance and frequency gradient of absorption and scattering coefficient of acoustic energy travelling through sediment just below the surface of the sea floor. | REAL | GRAD_POWER_LEVEL_LEN_FREQ | 983 | |
| SED_SRF_ATTENUATION_GRAD | The distance and frequency gradient of absorption and scattering coefficient of acoustic energy travelling through sea floor sediment. | REAL | POWER_LEVEL_LENGTH_FREQ | 984 | |
| SED_SRF_DENSITY | The ratio of the mass of a surface sediment sample to the volume occupied by it. | REAL | VOLUMIC_MASS | 985 | |
| SED_THIN_LAYER_THICKNESS | The thickness of the surficial sediment thin-layer at the ocean bottom. | REAL | LENGTH | 986 | |
| SED_TWO_WAY_TRAVEL_TIME | The quantity of time required for acoustic energy to travel vertically from the sea floor to the sediment/basement interface, and back to the sea floor for a low frequency bottom loss. | REAL | TIME | 987 | |
| SED_WATER_SNDSPD_RATIO | The ratio of the sediment sound speed to the water column sound speed at the sea floor. | REAL | PURE_NUMBER | 988 | |
| SENSIBLE_HEAT_FLUX | The rate of flow of heat between the ocean or terrain and the atmosphere. | REAL | IRRADIANCE | 989 | |
| SERVICE_BRANCH | The branch of a military organization. | ENUMERATION | 990 | ||
| SHARP_CURVE_RADIUS | The radius of curvature of sharp curves in a transportation route. | REAL | LENGTH | 991 | |
| SHELTER_BELT | Indicates that the object (e.g., a linear stand of trees) functions as a shelter belt, protecting other objects (e.g., roadways, railroads, croplands or constructions) from the effects of adverse weather. | LOGICAL | 992 | ||
| SHIP_DENSITY | The number of ships in a nominal 111,120 kilometres (60 nautical miles) square cell of ocean. | INTEGER | PURE_NUMBER | 993 | |
| SHIP_DENSITY_CODED | The shipping traffic density. | ENUMERATION | 994 | ||
| SHIPPING_LOAD_RESTRICTIONS | The description of any load restrictions that apply to ships using a section of a waterway or facility. | STRING | 995 | ||
| SHORELINE_PHYSIOGRAPHY | The topography and material types found on a shoreline. | ENUMERATION | 996 | ||
| SHORELINE_TYPE | The physical characteristic of a shoreline region. | ENUMERATION | 997 | ||
| SHOWALTER_ATM_STABILITY_NDX | The quantity of the value that indicates the degree of stability of the layer of the atmosphere extending from a level near the surface of the Earth to the 500 kilopascal (500 millibar) surface as calculated by the Showalter method. | REAL | PURE_NUMBER | 998 | |
| SIG_WAVE_HEIGHT | The mean height of the highest one third waves measured from trough to crest. | REAL | LENGTH | 999 | |
| SIG_WAVE_SWELL_HEIGHT | The average of highest N/3 heights (from trough to crest) of waves from N swell waves (produced by distant wind waves) measured at a point. | REAL | LENGTH | 1000 | |
| SIG_WIND_INDUCED_WAVE_HGT | The average of highest N/3 heights (from trough to crest) of waves from N wind waves (produced by local winds) measured at a point. | REAL | LENGTH | 1001 | |
| SIGNAL_FREQUENCY | The frequency of an audio, electromagnetic, or light wave. | REAL | FREQUENCY | 1002 | |
| SIGNAL_GROUP_DEFINITION | The number of signals, the combination of signals, or the Morse characters within one full period of sequence of a signal. | STRING | 1003 | ||
| SIGNAL_PATTERN_COUNT | The number of flashes/occultations in a group flashing/occulting light character. | COUNT | 1004 | ||
| SIGNAL_SEQUENCE | The specification of the sequence of times occupied by intervals of light and eclipse. | STRING | 1005 | ||
| SIGNIFICANT_BREAKER_HEIGHT | The mean height, measured from trough to crest, of the primary (highest one-third) breaking waves. | REAL | LENGTH | 1006 | |
| SIGNIFICANT_BREAKER_PERIOD | The mean quantity of time that elapses between two successive wave crests within the highest one-third of breaking waves in the surf zone wave spectra. | REAL | TIME | 1007 | |
| SINGLE_WHEEL_BEARING_LOAD | The estimated single-wheel bearing load. | REAL | MASS | 1008 | |
| SLOPE | The angle between the surface of the region delineated by an object and a perpendicular to the local gravity vector; e.g., gradient or slope. May be reported as percentage (i.e., the change in elevation divided by the horizontal distance over which the change takes place, times one hundred ((e2-e1)/d) · 100), arc degrees, or radians. | REAL | PURE_NUMBER, PLANE_ANGLE | 1009 | |
| SLOPE_LENGTH | The length of a route segment having a slope (rise/run) >= 0,07 for a road, or >= 0,03 for a railroad. | REAL | LENGTH | 1010 | |
| SLOPE_ORIENTATION | The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of maximum uphill slope of an object. | REAL | PLANE_ANGLE | 1011 | |
| SLOPE_POLYGON_RANGE | A range indicating the slope of ground within the delineated object's extent. | ENUMERATION | 1012 | ||
| SMOKE_RATE | The fraction of maximum smoke production rate. The following interpretations may be applied: 1/4: Small, 2/4: Medium, 3/4: Large, 4/4: Maximum. | REAL | PURE_NUMBER | 1013 | |
| SMOKESTACK_COUNT | The number of smokestacks associated with an object, e.g., an industrial facility. | COUNT | 1014 | ||
| SNOISE_ICE_REGION_IDENT | The numeric identifier of a shipping noise ice region; used for linking to an external database or reference. | INDEX | 1015 | ||
| SNOISE_MSRMNT_STATUS | The measurement status of a shipping noise level; typically taken at 50 hertz. | ENUMERATION | 1016 | ||
| SNOISE_SEASON_TYPE | The seasonally adjusted ocean acoustic noise characteristics due to distant shipping; referenced parameters typically include spectral class, standard deviation, and decibels per octave roll off. | ENUMERATION | 1017 | ||
| SNOISE_SPECCLS_CURVE_IDENT | The numeric identifier of a shipping noise spectral-class curve; used for linking to an external database or reference. | INDEX | 1018 | ||
| SNOISE_SPECPL_ROLLOFF | The gradient in the shipping noise spectral power level with frequency; typically above 300 hertz. | REAL | POWER_LEVEL_FREQ_GRADIENT | 1019 | |
| SNOISE_STDV | The standard deviation in the shipping noise spectral power level; typically taken at 50 hertz. | REAL | FIELD_OR_POWER_LEVEL | 1020 | |
| SNOISE_STDV_REGION_IDENT | The numeric identifier of a shipping noise standard deviation region; used for linking to an external database or reference. | INDEX | 1021 | ||
| SNOW_AGE | The time difference between the reference date and the date of the last measurable snow fall. | REAL | TIME | 1022 | |
| SNOW_DEPTH | The depth of snow and ice on the ground. | REAL | LENGTH | 1023 | |
| SNOW_DEPTH_EQUIVALENT | The depth of the liquid content of solid precipitation that has accumulated on the ground. | REAL | LENGTH | 1024 | |
| SNOW_DRIFT_HEIGHT | The maximum height of a snowdrift. | REAL | LENGTH | 1025 | |
| SNOW_MEASUREMENT_CONDITION | The specific conditions associated with a measurement of snow. | ENUMERATION | 1026 | ||
| SNOW_MELTING_RATE | The melting rate of snow on the ground. | REAL | VELOCITY | 1027 | |
| SOIL_CONE_INDEX | The force per unit basal area required to push a cone penetrometer through a specified increment of soil. Cone index is a measure of soil strength used for compaction, trafficability and moisture distribution analysis. Typical depths of measurement range from 0,0 to 0,6 metres. | REAL | MOMENTUM | 1028 | |
| SOIL_DEPTH | The general depth of soil or unconsolidated material to bedrock. | REAL | LENGTH | EA SOIL_DEPTH_RANGE, EA SURFICIAL_DEPTH_RANGE | 1029 |
| SOIL_DEPTH_RANGE | A range indicating the depth of soil or unconsolidated material over bedrock. | ENUMERATION | EA SOIL_DEPTH, EA SURFICIAL_DEPTH_RANGE | 1030 | |
| SOIL_LAYER_DEPTH_RANGE | A range indicating the depth of a layer of the soil. | ENUMERATION | 1031 | ||
| SOIL_MMASS_LOWER_LAYER | The mass of water contained in the soil layer between five (inclusive) and 100 centimetres below the surface. | REAL | MASS_FRACTION | EA SOIL_MMASS_TOP_LAYER | 1032 |
| SOIL_MMASS_TOP_LAYER | The mass of water contained in the soil layer from the surface down to five (exclusive) centimetres below the surface. | REAL | MASS_FRACTION | EA SOIL_MMASS_LOWER_LAYER | 1033 |
| SOIL_SURFACE_ALBEDO | The fraction of total electromagnetic radiation incident on the soil surface that is reflected back in all directions. | REAL | PURE_NUMBER | 1034 | |
| SOIL_TEMP_LOWER_LAYER | The temperature of the soil between five (inclusive) and 100 centimetres below the surface. | REAL | THERMO_TEMPERATURE | EA SOIL_TEMP_TOP_LAYER | 1035 |
| SOIL_TEMP_SURFACE_LAYER | The temperature of the soil at the surface (within a few optical depths). | REAL | THERMO_TEMPERATURE | 1036 | |
| SOIL_TEMP_TOP_LAYER | The temperature of the soil from the surface down to five (exclusive) centimetres below the surface. | REAL | THERMO_TEMPERATURE | EA SOIL_TEMP_LOWER_LAYER | 1037 |
| SOIL_TYPE | The USCS soil type. | ENUMERATION | 1038 | ||
| SOIL_WATER_CONTENT | The water lost from the soil upon drying to constant mass at 105 degrees Celsius; expressed either as the fractional mass of water per unit mass of dry soil, or as the fractional volume of water per unit bulk volume of wet soil. | REAL | MASS_FRACTION, VOLUME_FRACTION | 1039 | |
| SOIL_WETNESS | The soil water content, whether liquid or solid. | ENUMERATION | 1040 | ||
| SOLAR_ALPHA_FLUX | The solar flux of alpha particles. | REAL | PARTICLE_FLUX_DENSITY | 1041 | |
| SOLAR_DIFFUSED_RADIATION | The quantity of diffused solar incident flux (or irradiance) per unit of an object's surface area. | REAL | IRRADIANCE | 1042 | |
| SOLAR_DIRECT_RADIATION | The direct solar incident flux (or irradiance) per unit of an object's surface area. | REAL | IRRADIANCE | 1043 | |
| SOLAR_ELECTRON_FLUX | The solar flux of electrons. | REAL | PARTICLE_FLUX_DENSITY | 1044 | |
| SOLAR_EM_FLUX | The solar electromagnetic flux level. | REAL | FLUX_DENSITY | 1045 | |
| SOLAR_EM_FLUX_STATION | The solar electromagnetic flux monitoring station identifier. | ENUMERATION | 1046 | ||
| SOLAR_PHENOLOGY | The growing season quantity of the accumulated daily sunlight duration multiplied by the daily average temperature. | REAL | INTEGRATED_THERMO_TEMP | 1047 | |
| SOLAR_PROTON_FLUX | The solar flux of protons. | REAL | PARTICLE_FLUX_DENSITY | 1048 | |
| SOLAR_RADIATION_CUMULATIVE | The rate of solar radiation received over the preceding twenty-four hours (cumulative). | REAL | IRRADIANCE | 1049 | |
| SOLAR_WIND_ION_TEMP | The temperature of ionized particles in the solar wind. | REAL | THERMO_TEMPERATURE | 1050 | |
| SOLAR_WIND_MSRMNT_QUALITY | The quality of a solar wind observation, e.g., a solar wind speed. | ENUMERATION | 1051 | ||
| SOLAR_WIND_PROTON_DENSITY | The density of protons in the solar wind. | REAL | VOLUMETRIC_ENTITY_DENSITY | 1052 | |
| SOLAR_WIND_SPEED | The speed of the solar wind. | REAL | VELOCITY | 1053 | |
| SOLAR_WIND_SPEED_GSE_X | The speed of the solar wind in the direction of the Sun (in the ecliptic plane); positive towards the Sun. | REAL | VELOCITY | 1054 | |
| SOLAR_WIND_SPEED_GSE_Y | The speed of the solar wind in the ecliptic plane in a direction perpendicular to the direction of the Sun, and pointing generally opposite to the direction of revolution of the Earth about the Sun; positive in the contra-revolution direction. | REAL | VELOCITY | 1055 | |
| SOLAR_WIND_SPEED_GSE_Z | The speed of the solar wind perpendicular to the ecliptic plane; positive towards the star Polaris. | REAL | VELOCITY | 1056 | |
| SOLAR_X_RAY_FLUX_L_BAND | The intensity of solar x-rays in the L-band (0,1 - 0,8 nanometres wavelength). | REAL | RADIANT_EXITANCE_RATE | 1057 | |
| SOLAR_X_RAY_FLUX_S_BAND | The intensity of solar x-rays in the S-band (0,05 - 0,4 nanometres wavelength). | REAL | RADIANT_EXITANCE_RATE | 1058 | |
| SOLRAD_AZANG_GEODETIC | The angle in the horizontal plane, measured in a clockwise direction from above, from planetary geodetic north to the solar radiance vector. | REAL | PLANE_ANGLE | 1059 | |
| SOLRAD_AZANG_LOCAL_NORMAL | The angle in the plane perpendicular to the local normal, generally the local x-y plane that is perpendicular to the local z-axis, measured counter-clockwise from the azimuth reference vector, normally the local x-axis, to the projection of the solar radiance vector onto that plane. This attribute is generally used as a qualifier for other attributes, e.g., solar radiance as a function of angle. | REAL | PLANE_ANGLE | 1060 | |
| SOLRAD_ELANG_HORIZONTAL | The angle in the vertical plane, measured from the horizontal plane, to the solar radiance vector. | REAL | PLANE_ANGLE | 1061 | |
| SOLRAD_ELANG_LOCAL_NORMAL | The angle measured from the plane perpendicular to the normal vector to the solar radiance vector and defined positive if the solar radiance vector is in the same hemisphere as the normal vector and negative otherwise. This attribute is generally used as a qualifier for other attributes, e.g., solar radiance as a function of angle. | REAL | PLANE_ANGLE | 1062 | |
| SOLRF_FLUX_10r7 | The intensity of solar radio flux at 10,7 centimetre (2,8 gigahertz) wavelength. | REAL | FLUX_DENSITY | 1063 | |
| SOLRF_NB_BASIC_MORPHOLOGY | The basic morphology of a solar radio noise burst event. | ENUMERATION | 1064 | ||
| SOLRF_NB_COMPLEX_MORPHOLOGY | The complex morphology of a solar radio noise burst event. | ENUMERATION | 1065 | ||
| SOLRF_NB_DURATION | The duration of a solar radio noise burst event. | REAL | TIME | 1066 | |
| SOLRF_NB_DURATION_QUALITY | The quality of a solar radio noise burst event duration measurement. | ENUMERATION | EA SOLRF_NB_DURATION | 1067 | |
| SOLRF_NB_MAX_TIME | The time of the maximum electromagnetic flux of a solar radio noise burst event, relative to the beginning of the day (midnight). | REAL | TIME | 1068 | |
| SOLRF_NB_MAX_TIME_QUALITY | The quality of a solar radio noise burst event time of the maximum electromagnetic flux measurement. | ENUMERATION | EA SOLRF_NB_MAX_TIME | 1069 | |
| SOLRF_NB_MEAN_FLUX | The mean electromagnetic flux of a solar radio noise burst event. | REAL | FLUX_DENSITY | 1070 | |
| SOLRF_NB_MEAN_FLUX_QUALITY | The quality of a solar radio noise burst event mean electromagnetic flux measurement. | ENUMERATION | EA SOLRF_NB_MEAN_FLUX | 1071 | |
| SOLRF_NB_PEAK_FLUX | The peak electromagnetic flux of a solar radio noise burst event. | REAL | FLUX_DENSITY | 1072 | |
| SOLRF_NB_PEAK_FLUX_QUALITY | The quality of a solar radio noise burst event peak electromagnetic flux measurement. | ENUMERATION | EA SOLRF_NB_PEAK_FLUX | 1073 | |
| SOLRF_NB_REMARKS | The descriptive or explanatory comment regarding a solar radio noise burst event. | STRING | 1074 | ||
| SOLRF_NB_START | The starting time of a solar radio noise burst event, relative to the beginning of the day (midnight). | REAL | TIME | 1075 | |
| SOLRF_NB_START_QUALITY | The quality of a solar radio noise burst event starting time measurement. | ENUMERATION | EA SOLRF_NB_START | 1076 | |
| SOUND_SIGNAL_TYPE | The type of an audible signal. | ENUMERATION | 1077 | ||
| SOUNDING_DATUM | The vertical, typically tidal, datum to which soundings and drying heights are referenced; also known as chart sounding datum. It is usually taken to correspond to a low water stage of the tide. | ENUMERATION | 1078 | ||
| SOUNDING_EXPOSITION | The type of depth value of a sounding with respect to the surrounding region. | ENUMERATION | 1079 | ||
| SOUNDING_MSRMNT_TECHNIQUE | The type of technique and/or method of sounding measurement; a sounding is a measured depth of water. | ENUMERATION | 1080 | ||
| SOUNDING_STATUS | The status of depth measured by sounding. | ENUMERATION | 1081 | ||
| SOUNDING_VELOCITY | The type of correction that has been added to, or subtracted from an instrument reading to obtain correct depth. | ENUMERATION | 1082 | ||
| SOURCE | The source from which object identifications are captured or upgraded. | ENUMERATION | 1083 | ||
| SOURCE_MTRL_COMPILE_DATE | The date the source material (e.g., map sheet) was originally compiled; coded as specified by ISO 8601:1988, 5.2.1.1. | STRING | 1084 | ||
| SOURCE_MTRL_EDITION | The source material (e.g., map sheet) edition. | STRING | 1085 | ||
| SOURCE_MTRL_FIRST_NAME | The name or identification number of the first source material, e.g., map sheet. | STRING | 1086 | ||
| SOURCE_MTRL_GENERAL_INFO | The description of conditions within the source materials, e.g., map sheet. | STRING | 1087 | ||
| SOURCE_MTRL_PRINT_DATE | The date the source material (e.g., map sheet) was last printed; coded as specified by ISO 8601:1988, 5.2.1.1. | STRING | 1088 | ||
| SOURCE_MTRL_REVISION_DATE | The date the source material (e.g., map sheet) was last revised; coded as specified by ISO 8601:1988, 5.2.1.1. | STRING | 1089 | ||
| SOURCE_MTRL_SECOND_NAME | The name or identification number of the second source material, e.g., map sheet. | STRING | 1090 | ||
| SPAN_COUNT | The number of spans in a bridge or aqueduct. | COUNT | 1091 | ||
| SPATIAL_ALIGNMENT | The type of an object's spatial alignment. | ENUMERATION | 1092 | ||
| SPECIFIC_HEAT | The quantity of energy required to raise the temperature of a unit mass of the material by one Kelvin. | REAL | SPECIFIC_HEAT_CAPACITY | 1093 | |
| SPECIFIC_HUMIDITY | In a system of moist air, the ratio of the mass of water vapour to the total mass of the system. | REAL | PURE_NUMBER | 1094 | |
| SPECULAR_LIGHT_INTENSITY | The fraction of maximum specular light intensity from an object. | REAL | PURE_NUMBER | EA AMBIENT_LIGHT_INTENSITY, EA DIFFUSE_LIGHT_INTENSITY | 1095 |
| SPECULAR_SRF_REFLECTIVITY | The specular component of the surface reflectivity. Specular reflectivity may be qualified by other attributes, e.g., the electromagnetic band for which the value applies. | REAL | PURE_NUMBER | EA EM_BAND, EA AMBIENT_SRF_REFLECTIVITY, EA DIFFUSE_SRF_REFLECTIVITY, EA SURFACE_REFLECTIVITY | 1096 |
| SPEED_LIMIT | The maximum speed legally permitted on a given stretch of road or railroad. | REAL | VELOCITY | 1097 | |
| SPERM_WHALE_YEARLY_CATCH | A range indicating the yearly catch of Sperm whales. | ENUMERATION | 1098 | ||
| SPILLING_BREAKERS | The rate of occurrence of spilling waves (numerous rolling waves within the surf zone, as the result of a mildly sloping beach). | REAL | PURE_NUMBER | 1099 | |
| SPNDTRNSLN_MIN_CLEARANCE | The minimum vertical clearance of a suspended power transmission line from the underlying terrain. | REAL | LENGTH | 1100 | |
| SPNDTRNSLN_PYLON_SPACE | The distance between adjacent pylons along a suspended power transmission line. | REAL | LENGTH | 1101 | |
| SPNDTRNSLN_SAG | The maximum vertical distance from the height of the suspended power transmission line at the connection to the pylon to the lowest point of the wire. | REAL | LENGTH | 1102 | |
| SPNDTRNSLN_SEGMENT_COUNT | The number of straight segments which may be used to approximate the catenary shape of a suspended power transmission line between adjacent pylons. | COUNT | 1103 | ||
| SPNDTRNSLN_TYPE | The type of suspension of power transmission lines between pylons. | ENUMERATION | 1104 | ||
| SPOT_ELEVATION_TYPE | The type of a spot elevation measurement. | ENUMERATION | 1105 | ||
| SPRING_TYPE | The type of a spring or a watering hole. | ENUMERATION | 1106 | ||
| SRF_EM_PROP_DUCT_HEIGHT | The height above the planetary surface (water or land) of the effective ceiling of a surface-based elevated electromagnetic propagation duct formed by moisture trapped by a low altitude temperature inversion. | REAL | LENGTH | 1107 | |
| SRF_EM_PROP_DUCT_INTENSITY | The strength of a surface-based elevated electromagnetic propagation duct formed by moisture trapped by a low altitude temperature inversion. | ENUMERATION | 1108 | ||
| SRF_ROUGHNESS_DESC_IDENT | The numeric identifier of a surface roughness description; used for linking to an external database or reference. | INDEX | EA TERRAIN_SRF_ROUGHNESS_TYPE | 1109 | |
| SRF_THERMAL_SUNSHADING_DOM | The degree of dominance of the effect of sun shading (in the respective sensor domain) over the thermally derived values, ranged zero to one, with one being maximally (but not necessarily completely) dominant. The exact interpretation of this value is determined by the thermal model being used. | REAL | PURE_NUMBER | EA SURFACE_THERMAL_MODEL | 1110 |
| SRF_THERMAL_VISUAL_DOM | The degree of dominance of an image's visual texture (in the respective sensor domain) over the thermally derived values, ranged zero to one, with one being maximally (but not necessarily completely) dominant. The exact interpretation of this value is determined by the thermal model being used. | REAL | PURE_NUMBER | EA SURFACE_THERMAL_MODEL | 1111 |
| SRF_TRAFFICABILITY_COARSE | The categorized character of the terrain surface as it affects the movement of ground forces (e.g., military units, vehicles, or infantry) in terms of a coarse resolution estimate of trafficability. | ENUMERATION | 1112 | ||
| SRF_TRAFFICABILITY_FINE | The categorized character of the terrain surface as it affects the movement of ground forces (e.g., military units, vehicles, or infantry) in terms of a fine resolution estimate of trafficability. | ENUMERATION | 1113 | ||
| SRF_TRAFFICABILITY_MEDIUM | The categorized character of the terrain surface as it affects the movement of ground forces (e.g., military units, vehicles, or infantry) in terms of a medium resolution estimate of trafficability. | ENUMERATION | 1114 | ||
| STANTON_NUMBER | A scalar governing the aerodynamic heat transfer coefficient. | REAL | PURE_NUMBER | 1115 | |
| START_DATE | The earliest date on which an object (e.g., a buoy) will be present; coded as specified by ISO 8601:1988, 5.2.1.1. | STRING | EA END_DATE | 1116 | |
| STEM_DIAMETER_SIZE | The average diameter of trees in a stand, measured at a height of 1,4 metres above the ground. | REAL | LENGTH | 1117 | |
| STEM_DIAMETER_SIZE_RANGE | Estimated range of the average stem diameter within the delineated object's extent, determined at a height of 1,4 metres above the ground. | ENUMERATION | 1118 | ||
| STORAGE_FACILITIES | The type of storage facilities available at or in the near vicinity. | ENUMERATION | 1119 | ||
| STREAM_CHANNEL_TYPE | The type of trough-like depression that is normally occupied by the waters of a river or stream. | ENUMERATION | 1120 | ||
| STREAM_SINK_TYPE | The disposition of the flow of a stream. | ENUMERATION | 1121 | ||
| STRUCTURE_DENSITY | The number of structures within a square kilometre. | INTEGER | PURE_NUMBER | 1122 | |
| STRUCTURE_PROTECTION_TYPE | The degree to which a structure provides protection to itself or its contents by resisting the effects of explosions, ordnance, and natural disasters such as hurricanes, tornadoes, and earthquakes. | ENUMERATION | 1123 | ||
| STRUCTURE_SHAPE | The geometric form of an object, e.g., appearance or configuration. | ENUMERATION | 1124 | ||
| SUMMER_CANOPY_COVER | The fraction of summer canopy closure within the delineated object's extent. | REAL | PURE_NUMBER | EA SUMMER_CANOPY_COVER_RANGE | 1125 |
| SUMMER_CANOPY_COVER_RANGE | A range indicating the fraction of summer canopy closure within the delineated object's extent. | ENUMERATION | EA SUMMER_CANOPY_COVER | 1126 | |
| SUNSHINE_DURATION | The quantity of time sunshine occurred over the reporting period. | REAL | TIME | 1127 | |
| SUNSHINE_OBS_DURATION | The quantity of time over which the sunshine observation was taken. | REAL | TIME | 1128 | |
| SUNSPOT_NUMBER_INDEX | The quantity of a SNI forecast is equal to the total number of sunspots plus ten times the number of sunspot groups in a given period (usually one month). The actual Sunspot Number (SSN) for a given date is then obtained by calculating the Sunspot Number Index (SNI) for each of the six months before and after the date of interest and averaging them -- weighing the first and last months only half as much as the other months. | INTEGER | PURE_NUMBER | 1129 | |
| SUPERTANKER_COUNT | The number of supertankers (dead weight > 317 514,6 kilograms (approximately 350 000 tons); length > 325 metres) in a nominal 111,120 kilometres (60 nautical miles) square cell of ocean. | COUNT | 1130 | ||
| SURFACE_ABSORPTIVITY | The ratio of absorbed to incident flux at a surface. Absorptivity may be qualified by other attributes, e.g., the electromagnetic band for which the value applies. | REAL | FIELD_OR_POWER_LEVEL | EA EM_BAND | 1131 |
| SURFACE_ABSORPTIVITY_SOLAR | The ratio of absorbed to incident solar flux, generally from about 0,0 to 3,0 micrometres in wavelength (all appreciable solar flux), at a surface; if expressed in decibels, negative sign is assumed. | REAL | FIELD_OR_POWER_LEVEL | 1132 | |
| SURFACE_AIR_TEMPERATURE | The air temperature at ground level. | REAL | THERMO_TEMPERATURE | 1133 | |
| SURFACE_BACKSCATTER | The ratio of the flux returned (reflected directly back in the direction of incidence) to the incident flux in decibels (negative sign assumed). Backscatter may be qualified by other attributes, e.g., the electromagnetic band for which the value applies. | REAL | FIELD_OR_POWER_LEVEL | EA EM_BAND | 1134 |
| SURFACE_DEWPOINT_DEPRESSION | The difference in degrees, at the lowest level of the atmosphere, between the air temperature and the dewpoint. | REAL | THERMO_TEMPERATURE | 1135 | |
| SURFACE_DEWPOINT_TEMP | The temperature to which a parcel of air at the surface, at the lowest level of the atmosphere, must be cooled at constant pressure and water vapour content in order for saturation to occur. | REAL | THERMO_TEMPERATURE | 1136 | |
| SURFACE_ELEVATION | The elevation of the terrain surface with respect to a specified vertical datum. | REAL | LENGTH | 1137 | |
| SURFACE_GRAZING_ANGLE | The average angle between the horizontal plane at the sea surface and the scattered acoustic rays. | REAL | PLANE_ANGLE | 1138 | |
| SURFACE_LEVEL_ILLUMINANCE | The total solar and lunar contribution to the illuminance level measured at planetary ground level as a function of location, date, time, and meteorological conditions. | REAL | RADIANT_ENERGY_FLUENCE | EA ILLUMINANCE | 1139 |
| SURFACE_MATERIAL_TYPE | The surface material composition of an object, excluding internal structural material. | ENUMERATION | EA PRI_MATERIAL_TYPE, EA SCND_MATERIAL_TYPE, EA UNDERLYING_MATERIAL_TYPE | 1140 | |
| SURFACE_REFLECTIVITY | The ratio of reflected to incident flux at a surface. Reflectivity may be qualified by other attributes, e.g., the electromagnetic band for which the value applies. | REAL | PURE_NUMBER | EA EM_BAND, EA AMBIENT_SRF_REFLECTIVITY, EA DIFFUSE_SRF_REFLECTIVITY, EA SPECULAR_SRF_REFLECTIVITY | 1141 |
| SURFACE_TEMPERATURE | The temperature of the surface of the material or object. | REAL | THERMO_TEMPERATURE | 1142 | |
| SURFACE_THERMAL_INDEX | The index used to describe the thermal (radiance) characteristic of a surface. This value is used to index one or more thermal (radiance) model-specific lookup tables in order to predict, display, or analyze thermal signatures. The exact interpretation of this value is determined by the thermal model being used. | REAL | PURE_NUMBER | EA SURFACE_THERMAL_MODEL | 1143 |
| SURFACE_THERMAL_MODEL | The type of thermal (radiance) model being used to determine the interpretation of the thermal index describing the thermal (radiance) characteristic of a surface. That value is used to index one or more thermal model-specific lookup tables in order to predict, display, or analyze thermal signatures. | ENUMERATION | EA SURFACE_THERMAL_INDEX | 1144 | |
| SURFACE_WIND_SPEED | The speed of wind at a surface. | REAL | VELOCITY | 1145 | |
| SURFICIAL_DEPTH_RANGE | A range indicating the estimated general depth of soil or unconsolidated surface materials. | ENUMERATION | EA SOIL_DEPTH, EA SOIL_DEPTH_RANGE | 1146 | |
| SURGING_BREAKERS | The rate of occurrence of surging waves (narrow or nonexistent surf zone with high reflection, as the result of a very steep beach). | REAL | PURE_NUMBER | 1147 | |
| SURVEY_END_DATE | The end date of a survey; coded as specified by ISO 8601:1988, 5.2.1.1. | STRING | EA SURVEY_START_DATE | 1148 | |
| SURVEY_QUALITY | The type of survey carried out for an object. | ENUMERATION | 1149 | ||
| SURVEY_START_DATE | The start date of a survey; coded as specified by ISO 8601:1988, 5.2.1.1. | STRING | EA SURVEY_END_DATE | 1150 |