PDS_VERSION_ID = PDS3 LABEL_REVISION_NOTE = " 2013-09-04 - Draft Version, D. Morgan, C. Piker (U. Iowa); " NOTE = "ELEDENS_BMAG_DDR_02027.CSV contains all Electron Plasma Density and Magnetic field strength measurements from the MARSIS Instrument for orbit 2027." /* Identification Data Elements */ MISSION_NAME = "MARS EXPRESS" INSTRUMENT_HOST_NAME = "MARS EXPRESS" INSTRUMENT_HOST_ID = MEX INSTRUMENT_NAME = "MARS ADVANCED RADAR FOR SUBSURFACE AND IONOSPHERE SOUNDING" INSTRUMENT_ID = MARSIS INSTRUMENT_TYPE = "RADAR" INSTRUMENT_MODE_ID = AIS INSTRUMENT_MODE_DESC = "ACTIVE IONOSPHERE SOUNDING" TARGET_NAME = "MARS" TARGET_TYPE = PLANET DATA_SET_ID = "MEX-M-MARSIS-5-DDR-ELEDENS/BMAG-V1.0" DATA_SET_NAME = "MEX: MARSIS ELECTRON PLASMA DENSITY AND MAGNETIC FIELD DATA" PROCESSING_LEVEL_ID = 5 PRODUCT_TYPE = DDR PRODUCT_ID = "ELEDENS_BMAG_DDR_02027" START_TIME = 2005-08-13T04:29:40.000 STOP_TIME = 2005-08-13T11:12:48.000 SPACECRAFT_CLOCK_START_COUNT = "1/0071987374.56210" SPACECRAFT_CLOCK_STOP_COUNT = "1/0072011562.56246" ORBIT_NUMBER = 2027 RELEASE_ID = 0001 REVISION_ID = 0000 PRODUCT_CREATION_TIME = 2015-12-01 PRODUCER_FULL_NAME = "DAVID D. MORGAN" PRODUCER_INSTITUTION_NAME = "UNIVERSITY OF IOWA" /* File characteristics Data Elements */ OBJECT = FILE FILE_NAME = "ELEDENS_BMAG_DDR_02027.CSV" RECORD_TYPE = STREAM RECORD_BYTES = 341 /* Longest Line */ FILE_RECORDS = 123 MD5_CHECKSUM = "32d9f130599f8b44f66d2a47f8f7c07e" ^SPREADSHEET = ("ELEDENS_BMAG_DDR_02027.CSV",342) OBJECT = SPREADSHEET NAME = "ELEC_DENS_B_MAG" ROWS = 122 ROW_BYTES = 132 /* Maximum */ FIELDS = 17 FIELD_DELIMITER = COMMA OBJECT = FIELD NAME = "SCLK" FIELD_NUMBER = 1 DATA_TYPE = CHARACTER BYTES = 18 /* Maximum */ DESCRIPTION = "The spacecraft clock value at which the first sounder pulse was transmitted for a frequency sweep. The clock consists of two fields: SSSSSSSSSS:FFFFF where SSSSSSSSSS is the count of on-board seconds and FFFFF is the count of fractions of a second which one fraction being 1/65536 of a second." END_OBJECT = FIELD OBJECT = FIELD NAME = "SCET" FIELD_NUMBER = 2 DATA_TYPE = TIME BYTES = 23 DESCRIPTION = "The Spacecraft Event Time generated from the SCLK string in field 1" END_OBJECT = FIELD OBJECT = FIELD NAME = "ORBIT_NUMBER" FIELD_NUMBER = 3 DATA_TYPE = INTEGER BYTES = 4 DESCRIPTION = "The orbit number. Though all data in a single product file is taken during the same orbit and the orbit number is recorded in the label file it is added here as well to assist archive consistancy checks." END_OBJECT = FIELD /* Convenience Geometry Section */ OBJECT = FIELD NAME = "ALTITUDE" FIELD_NUMBER = 4 DATA_TYPE = ASCII_REAL UNIT = "kilometers" BYTES = 6 /* Maximum */ DESCRIPTION = "The distance from Mars Express to the Planetographic Geode" END_OBJECT = FIELD OBJECT = FIELD NAME = "LATITUDE_PLANEOGRAPHIC" FIELD_NUMBER = 5 DATA_TYPE = ASCII_REAL UNIT = "degrees" BYTES = 6 /* Maximum */ DESCRIPTION = "Angle between Mars equatorial plane and normal to areoid from MEX spacecraft" END_OBJECT = FIELD OBJECT = FIELD NAME = "LATITUDE_PLANETOCENTRIC" FIELD_NUMBER = 6 DATA_TYPE = ASCII_REAL UNIT = "degrees" BYTES = 6 /* Maximum */ DESCRIPTION = "Angle subtended at Mars geometric center between Mars equatorial plane and line between planet center and MEX spacecraft, with MEX in northern hemisphere positive and in southern hemisphere negative." END_OBJECT = FIELD OBJECT = FIELD NAME = "LOCAL_TRUE_SOLAR_TIME" FIELD_NUMBER = 7 DATA_TYPE = ASCII_REAL UNIT = "hours" BYTES = 8 /* Maximum */ DESCRIPTION = "Angle between spacecraft radius vector and Sun vector from Mars geometric center projected on Mars equatorial plane, expressed in hours, with Solar position equal to 12:00, the opposite of the Solar position being 00:00/24:00, and increasing eastward" END_OBJECT = FIELD OBJECT = FIELD NAME = "WEST_LONGITUDE" FIELD_NUMBER = 8 DATA_TYPE = ASCII_REAL UNIT = "degrees" BYTES = 6 /* Maximum */ DESCRIPTION = "Mars planetographic longitude, increasing westward." END_OBJECT = FIELD OBJECT = FIELD NAME = "X_SUN_DIR_DISTANCE" FIELD_NUMBER = 9 DATA_TYPE = ASCII_REAL UNIT = "mars radii" BYTES = 6 /* Maximum */ DESCRIPTION = "Spacecraft position along an axis originating at the geometric center of Mars whose positive direction is towards the center of the sun. Values are given in Marian Radii." END_OBJECT = FIELD OBJECT = FIELD NAME = "RHO_PRP_SUN_DISTANCE" FIELD_NUMBER = 10 DATA_TYPE = ASCII_REAL UNIT = "mars radii" BYTES = 5 /* Maximum */ DESCRIPTION = "Spacecraft position along an axis originating at the geometric center of Mars which is perpendicular to the X_SUN_DIR_DISTANCE axis in the plane containing both the X_SUN_DIR_DISTANCE and the Mars Experss spacecraft. The positive directory is towards Mars Express and values are given in Marian Radii" END_OBJECT = FIELD OBJECT = FIELD NAME = "SOLAR_ZENITH_ANGLE" FIELD_NUMBER = 11 DATA_TYPE = ASCII_REAL UNIT = "degrees" BYTES = 5 /* Maximum */ DESCRIPTION = "Angle subtended at Mars geometric center between the Mars--Sun line and the Mars--MEX line." END_OBJECT = FIELD /* Plasma Density Measurment Section */ OBJECT = FIELD NAME = "ELECTRON_PLASMA_FREQUENCY" FIELD_NUMBER = 12 DATA_TYPE = ASCII_REAL UNIT = "kilohertz" BYTES = 0 /* Maximum */ DESCRIPTION = "The electron plasma frequency as measured from spacing between distortion harmonics in the ionogram associated with this sounder pulse set." END_OBJECT = FIELD OBJECT = FIELD NAME = "FPP_QUALITY" FIELD_NUMBER = 13 DATA_TYPE = ASCII_INTEGER BYTES = 0 /* Maximum */ DESCRIPTION = "A rating of the certainty of the electron plasma frequency. The values are: 1 - Harmonics are visible but there is significant doubt as to the correct value of the interval between harmonics. This doubt occurs because the harmonics are blurred and difficult to locate precisely or because the frequency interval between harmonics is not unique. 2 - Best quality. Harmonics are clear with well-defined interval between them." END_OBJECT = FIELD OBJECT = FIELD NAME = "FPP_VERIFICATION" FIELD_NUMBER = 14 DATA_TYPE = ASCII_INTEGER UNIT = "centimeters ** -3" BYTES = 0 /* Maximum */ DESCRIPTION = "For a limited set of data, the electron densities have been verified by a second independent measurement using the same technique. For the points where a verification has been attempted, the verification flag values are: empty field - No verification attempted 1 - Verification attempted; difference between archived value and independently measured value is greater than or equal to one frequency pixel, which is 0.01 MHz in the frequency range where this method of measurement is applicable. 2 - Verification attempted; difference between archived value and independently measured value is less than one frequency pixel, 0.01 MHz." END_OBJECT = FIELD OBJECT = FIELD NAME = "ELECTRON_PLASMA_DENSITY" FIELD_NUMBER = 15 DATA_TYPE = ASCII_REAL UNIT = "centimeters ** -3" BYTES = 0 /* Maximum */ DESCRIPTION = "The number of electrons per square centimeter calculated from the value in the electron plasma frequency period field according to the well known equation n_e [cm^-3] = (f_pe [MHz] /8.980e-3) ^2 where n_e is the electron density in particles per cubic centimeter and f_pe is the electron plasma frequency in megahertz." END_OBJECT = FIELD /* Magnetic Field Magnitude Measurement Section */ OBJECT = FIELD NAME = "ELECTRON_CYCLOTRON_PERIOD" FIELD_NUMBER = 16 DATA_TYPE = ASCII_REAL UNIT = "millisec" BYTES = 8 /* Maximum */ DESCRIPTION = "The electron cyclotron period as measured from spacing between low-frequency horizontal lines on the ionogram associated with this sounder pulse set." END_OBJECT = FIELD OBJECT = FIELD NAME = "FCP_QUALITY" FIELD_NUMBER = 17 DATA_TYPE = ASCII_REAL BYTES = 1 /* Maximum */ DESCRIPTION = "A rating of the certainty of the electron cyclotron period. The values are: 1 - 1 or 2 echoes, look faint 2 - 1 clearer echo, with more echoes 3 - Best quality, with 5 or more clear echoes, giving the best confidence aligning the trace." END_OBJECT = FIELD OBJECT = FIELD NAME = "B_MAGNITUDE" FIELD_NUMBER = 18 DATA_TYPE = ASCII_REAL UNIT = "nanoTesla" BYTES = 8 /* Maximum */ DESCRIPTION = "The spacecraft local magnetic field magnitude as calculated from the value in the electron cyclotron period according to the well-known relation between magnetic field strength and electron cyclotron frequency, written here in terms of the electron cyclotron period: |B| [nT] = 1000/(28 * T [ms]) where T is the measured electron cyclotron period in milliseconds and B is the magnetic field in nanotesla." END_OBJECT = FIELD END_OBJECT = SPREADSHEET END_OBJECT = FILE END