************************************ ***** GLOBAL ATTRIBUTES ****** ************************************ TITLE LANL MPA 1990-095 PROJECT ISTP>International Solar-Terrestrial Physics DISCIPLINE Space Physics>Magnetospheric Science SOURCE_NAME Lanl1990_095>Los Alamos National Laboratory 1990-095 DESCRIPTOR MPA>Magnetospheric plasma analyzer DATA_TYPE K0>Key Parameter DATA_VERSION 1 TEXT This file contains numerical moments computed from measurements of the Los Alamos Magnetospheric Plasma Analyzer (MPA) [Bame et al., Rev. Sci. Inst., in press 1993]. The moments are presented in s/c coordinates: the z-axis is aligned with the spin axis, which points radially toward the center of the Earth; the x-axis is in the plane containing the spacecraft spin axis and the spin axis of the Earth, with +X generally northward; and the y-axis points generally eastward. Polar angles are measured relative to the spin axis (+Z), and azimuthal angles are measured around the z-axis, with zero along the +X direction. The moments are computed for three 'species': lop (low-ener. ions, ~1eV/e-~130eV/e); hip (hi-ener. ions, ~130eV/e-~45keV/e); alle (electrons, ~30eV - ~45keV ). The electron measurements are obtained 21.5 secs after the ion measurements. Epoch is the measurement time appropriate for the ions. The moments are computed after the fluxes are corrected for background and s/c potential. Algorithms for these corrections are relatively unsophisticated, so the moments are suspect during times of high background and/or high spacecraft potential. Because the determined spacecraft potential is not very precise, the magnitude of the low-energy ion flow velocity is probably not accurate, but the flow direction is well determined. Tperp and Tpara are obtained from diagonalization of the 3-dimensional temperature matrix, with the parallel direction assigned to the eigenvalue which is most different from the other two. The corresponding eigenvector is the symmetry axis of the distribution and should be equivalent to the magnetic field direction. The eigenvalue ratio Tperp/Tmid, which is provided for each species, is a measure of the symmetry of the distribution and should be ~1.0 for a good determination. Several of the parameters have a fairly high daily dynamic range and for survey purposes are best displayed logarithmically. These parameters are indicated by non-zero 'SCALEMIN' values in this file. A quality flag value of 1 indicates that the values are preliminary and have not been checked in detail. MODS Created SEP 1992 Modified JAN 1993 Electron time tags removed Mag Latitude added Local time added Post Gap flag added Ratio variables changed Modified SEP 1994 Changes noted in mail message from M.Kessel ADID_REF NSSD0099 LOGICAL_FILE_ID l0_k0_mpa_00000000_v01 LOGICAL_SOURCE l0_k0_mpa LOGICAL_SOURCE_DESCR LANL 1990 Magnetospheric Plasma Analyzer Key Parameters PI_NAME D. McComas PI_AFFILIATION LANL MISSION_GROUP Geosynchronous Investigations INSTRUMENT_TYPE Plasma and Solar Wind TEXT_SUPPLEMENT_1 ************************************ **** RECORD VARYING VARIABLES **** ************************************ 1. Time of proton collection (electrons 21.5 seconds later) 2. partial density of low energy ions (1-130 eV/e) 3. S/C position, Geographic coordinates (radius,lat,long) Epoch low p dens RADIAL DISTANCE LATITUDE LONGITUDE dd-mm-yyyy hh:mm:ss.ms cm-3 01-01-1995 08:14:16.866 7.78146 -1.00000E+31 -1.00000E+31 -1.00000E+31 01-01-1995 08:17:08.900 11.0048 -1.00000E+31 -1.00000E+31 -1.00000E+31 01-01-1995 08:20:00.936 17.2077 6.62200 0.984700 -38.5200 01-01-1995 08:22:52.968 10.1441 6.62200 0.984700 -38.5200 01-01-1995 08:25:45.004 8.41345 6.62200 0.981100 -38.5200 01-01-1995 08:28:37.040 7.81859 6.62200 0.975500 -38.5200 01-01-1995 08:31:29.072 12.9365 6.62200 0.971600 -38.5200 01-01-1995 08:34:21.108 3.98123 6.62200 0.965700 -38.5200 01-01-1995 08:37:13.142 6.94066 6.62200 0.959700 -38.5200 01-01-1995 08:40:05.176 12.8438 6.62200 0.953500 -38.5200 01-01-1995 08:42:57.210 11.6523 6.62200 0.947100 -38.5200 01-01-1995 08:45:49.246 17.4268 6.62200 0.940500 -38.5200 01-01-1995 08:48:41.280 33.1561 6.62200 0.933800 -38.5200 01-01-1995 08:51:33.314 19.5202 6.62200 0.929300 -38.5200 01-01-1995 08:54:25.350 24.4733 6.62200 0.922300 -38.5200 01-01-1995 08:57:17.382 22.2784 6.62200 0.915200 -38.5200 01-01-1995 09:00:09.418 35.4472 6.62200 0.907900 -38.5200 01-01-1995 09:03:01.454 13.6023 6.62200 0.900400 -38.5200 01-01-1995 09:05:53.486 9.03627 6.62200 0.892800 -38.5200 01-01-1995 09:08:45.520 15.1708 6.62200 0.885100 -38.5200 01-01-1995 09:11:37.554 28.6211 6.62200 0.877200 -38.5200 01-01-1995 09:14:29.590 20.3010 6.62200 0.871800 -38.5200 01-01-1995 09:17:21.622 10.1499 6.62200 0.863600 -38.5200 01-01-1995 09:20:13.656 11.4781 6.62200 0.855300 -38.5200 01-01-1995 09:23:05.692 16.9607 6.62200 0.846900 -38.5200 01-01-1995 09:25:57.728 23.6845 6.62200 0.838300 -38.5200 01-01-1995 09:28:49.760 24.4467 6.62200 0.829500 -38.5200 01-01-1995 09:31:41.792 23.9319 6.62200 0.820600 -38.5200 01-01-1995 09:34:33.828 29.5553 6.62200 0.814600 -38.5200 01-01-1995 09:37:25.864 23.6342 6.62200 0.808600 -38.5200 01-01-1995 09:40:17.900 34.0035 6.62200 0.808600 -38.5200 01-01-1995 09:43:09.932 29.5977 6.62200 0.808600 -38.5200 01-01-1995 09:46:01.964 13.8629 6.62200 0.808600 -38.5200 01-01-1995 09:48:54.000 15.5173 6.62200 0.808600 -38.5200 01-01-1995 09:51:46.036 36.8636 6.62200 0.808600 -38.5200 01-01-1995 09:56:04.084 43.9624 6.62200 0.808600 -38.5200 01-01-1995 10:23:18.416 28.1611 6.62200 0.808600 -38.5200 01-01-1995 10:26:10.448 38.9446 6.62200 0.808600 -38.5200 01-01-1995 10:29:02.484 16.5861 6.62200 0.808600 -38.5200 01-01-1995 10:31:54.516 18.3283 6.62200 0.808600 -38.5200 01-01-1995 10:34:46.552 16.6092 6.62200 0.808600 -38.5200 01-01-1995 10:37:38.584 15.7179 6.62200 0.808600 -38.5200 01-01-1995 10:40:30.620 21.0395 6.62200 0.808600 -38.5200 01-01-1995 10:43:22.656 12.7408 6.62200 0.808600 -38.5200 01-01-1995 10:46:14.692 16.8345 6.62200 0.808600 -38.5200 01-01-1995 10:49:06.728 16.4233 6.62200 0.808600 -38.5200 01-01-1995 10:51:58.756 25.9519 6.62200 0.808600 -38.5200 01-01-1995 10:54:50.792 12.4858 6.62200 0.808600 -38.5200 01-01-1995 10:57:42.828 14.8846 6.62200 0.808600 -38.5200 01-01-1995 11:00:34.864 16.8593 6.62200 0.808600 -38.5200 01-01-1995 11:03:26.900 18.7177 6.62200 0.808600 -38.5200 01-01-1995 11:06:18.932 17.2101 6.62200 0.808600 -38.5200 01-01-1995 11:09:10.968 33.1030 6.62200 0.808600 -38.5200 01-01-1995 11:12:03.004 8.36304 6.62200 0.808600 -38.5200 01-01-1995 11:14:55.036 14.3886 6.62200 0.808600 -38.5200 01-01-1995 11:17:47.072 18.3833 6.62200 0.808600 -38.5200 01-01-1995 11:20:39.104 11.0065 6.62200 0.808600 -38.5200 01-01-1995 11:23:31.140 13.7786 6.62200 0.808600 -38.5200 01-01-1995 11:26:23.176 17.1394 6.62200 0.808600 -38.5200 01-01-1995 11:29:15.212 22.7982 6.62200 0.808600 -38.5200 01-01-1995 11:32:07.244 20.6838 6.62200 0.808600 -38.5200 01-01-1995 11:34:59.276 32.9909 6.62200 0.808600 -38.5200 01-01-1995 11:37:51.312 32.1161 6.62200 0.808600 -38.5200 01-01-1995 11:40:43.348 31.4545 6.62200 0.808600 -38.5200 01-01-1995 11:43:35.384 23.2296 6.62200 0.808600 -38.5200 01-01-1995 11:46:27.416 27.0444 6.62200 0.808600 -38.5200 01-01-1995 11:49:19.448 34.5108 6.62200 0.808600 -38.5200 01-01-1995 11:52:11.484 33.9137 6.62200 0.808600 -38.5200 01-01-1995 11:55:03.520 36.8475 6.62200 0.808600 -38.5200 01-01-1995 11:57:55.556 31.9890 6.62200 0.808600 -38.5200 01-01-1995 12:00:47.584 37.8743 6.62200 0.808600 -38.5200 01-01-1995 12:03:39.620 38.0980 6.62200 0.808600 -38.5200 01-01-1995 12:06:31.656 32.4003 6.62200 0.808600 -38.5200 01-01-1995 12:09:23.692 33.8763 6.62200 0.808600 -38.5200 01-01-1995 12:12:15.728 28.5676 6.62200 0.808600 -38.5200 01-01-1995 12:15:07.756 21.1647 6.62200 0.808600 -38.5200 01-01-1995 12:17:59.792 23.5041 6.62200 0.808600 -38.5200 01-01-1995 12:20:51.828 19.5579 6.62200 0.808600 -38.5200 01-01-1995 12:23:43.864 19.7715 6.62200 0.808600 -38.5200 01-01-1995 12:26:35.896 20.8320 6.62200 0.808600 -38.5200 01-01-1995 12:29:27.928 26.2549 6.62200 0.808600 -38.5200 01-01-1995 12:32:19.964 25.6705 6.62200 0.808600 -38.5200 01-01-1995 12:35:12.000 21.0940 6.62200 0.808600 -38.5200 01-01-1995 12:38:04.036 21.7423 6.62200 0.808600 -38.5200 01-01-1995 12:40:56.068 29.6542 6.62200 0.808600 -38.5200 01-01-1995 12:43:48.100 33.6498 6.62200 0.808600 -38.5200 01-01-1995 12:46:40.136 47.8461 6.62200 0.808600 -38.5200 01-01-1995 12:49:32.172 48.3923 6.62200 0.808600 -38.5200 01-01-1995 12:52:24.204 38.2345 6.62200 0.808600 -38.5200 01-01-1995 12:58:08.272 41.4295 6.62200 0.808600 -38.5200 01-01-1995 13:06:44.376 17.5331 6.62200 0.808600 -38.5200 01-01-1995 13:11:02.424 15.7926 6.62200 0.808600 -38.5200 01-01-1995 13:22:30.564 46.1277 6.62200 0.808600 -38.5200 01-01-1995 13:26:48.612 43.5562 6.62200 0.808600 -38.5200 01-01-1995 13:29:40.648 43.5351 6.62200 0.808600 -38.5200 01-01-1995 13:32:32.680 36.6186 6.62200 0.808600 -38.5200 01-01-1995 13:35:24.716 42.3686 6.62200 0.808600 -38.5200 01-01-1995 13:38:16.752 42.0994 6.62200 0.808600 -38.5200 01-01-1995 13:41:08.784 46.0187 6.62200 0.808600 -38.5200 01-01-1995 13:44:00.816 43.8271 6.62200 0.808600 -38.5200 01-01-1995 13:46:52.852 39.4949 6.62200 0.808600 -38.5200 01-01-1995 13:49:44.888 40.0749 6.62200 0.808600 -38.5200 01-01-1995 13:52:36.916 38.3320 6.62200 0.808600 -38.5200 01-01-1995 13:55:28.952 27.4582 6.62200 0.808600 -38.5200 01-01-1995 13:58:20.988 28.5303 6.62200 0.808600 -38.5200 02-01-1995 08:23:40.066 0.766593 -1.00000E+31 -1.00000E+31 -1.00000E+31 02-01-1995 08:27:58.118 1.17634 6.62200 0.971800 -38.4700 02-01-1995 08:29:24.134 1.08128 6.62200 0.971800 -38.4700 02-01-1995 08:30:50.152 0.924167 6.62200 0.967900 -38.4700 02-01-1995 08:32:16.170 1.05072 6.62200 0.965800 -38.4700 02-01-1995 08:33:42.188 1.29750 6.62200 0.961700 -38.4700 02-01-1995 08:35:08.206 0.897667 6.62200 0.959700 -38.4700 02-01-1995 08:38:00.238 0.950895 6.62200 0.953300 -38.4700 02-01-1995 08:39:26.256 1.29898 6.62200 0.951200 -38.4700 02-01-1995 08:40:52.274 1.88711 6.62200 0.946800 -38.4700 02-01-1995 08:42:18.292 1.53843 6.62200 0.944600 -38.4700 02-01-1995 08:43:44.308 1.23108 6.62200 0.940200 -38.4700 02-01-1995 08:45:10.326 1.21736 6.62200 0.937900 -38.4700 02-01-1995 08:46:36.342 1.61851 6.62200 0.933300 -38.4700 02-01-1995 08:48:02.360 1.55109 6.62200 0.931000 -38.4700 02-01-1995 08:49:28.376 1.31386 6.62200 0.928700 -38.4700 02-01-1995 08:50:54.394 1.16959 6.62200 0.924000 -38.4700 02-01-1995 08:52:20.412 1.52718 6.62200 0.921600 -38.4700 02-01-1995 08:53:46.428 1.24590 6.62200 0.916800 -38.4700 02-01-1995 08:55:12.446 1.18354 6.62200 0.914400 -38.4700 02-01-1995 08:56:38.462 1.32927 6.62200 0.909400 -38.4700 02-01-1995 08:58:04.480 1.66282 6.62200 0.907000 -38.4700 02-01-1995 09:00:56.516 1.57757 6.62200 0.899400 -38.4700 02-01-1995 09:02:22.532 1.79167 6.62200 0.896800 -38.4700 02-01-1995 09:03:48.548 1.70269 6.62200 0.891700 -38.4700 02-01-1995 09:05:14.566 0.852550 6.62200 0.889100 -38.4700 02-01-1995 09:06:40.582 1.14907 6.62200 0.883800 -38.4700 02-01-1995 09:08:06.598 1.43414 6.62200 0.881100 -38.4700 02-01-1995 09:09:32.618 1.45360 6.62200 0.878500 -38.4700 02-01-1995 09:12:24.652 0.853738 6.62200 0.870300 -38.4700 02-01-1995 09:13:50.668 1.99504 6.62200 0.864800 -38.4700 02-01-1995 09:15:16.684 1.72056 6.62200 0.862100 -38.4700 02-01-1995 09:16:42.704 1.73587 6.62200 0.856500 -38.4700 02-01-1995 09:18:08.718 0.663465 6.62200 0.853600 -38.4700 02-01-1995 09:19:34.740 0.641027 6.62200 0.847900 -38.4600 02-01-1995 09:21:00.752 1.63638 6.62200 0.845100 -38.4600 02-01-1995 09:22:26.768 0.585840 6.62200 0.842200 -38.4600 02-01-1995 09:25:18.804 0.698721 6.62200 0.833400 -38.4600 02-01-1995 09:26:44.824 0.557064 6.62200 0.827500 -38.4600 02-01-1995 09:28:10.840 0.628045 6.62200 0.824500 -38.4600 02-01-1995 09:31:02.876 1.98333 6.62200 0.815400 -38.4600 02-01-1995 09:32:28.892 1.75963 6.62200 0.812400 -38.4600 02-01-1995 09:33:54.912 1.71548 6.62200 0.806200 -38.4600 02-01-1995 09:35:20.924 1.91199 6.62200 0.803100 -38.4600 02-01-1995 09:36:46.940 0.499454 6.62200 0.796900 -38.4600 02-01-1995 09:38:12.960 0.713883 6.62200 0.793800 -38.4600 02-01-1995 09:41:04.996 0.684172 6.62200 0.784200 -38.4600 02-01-1995 09:42:31.012 0.656617 6.62200 0.781000 -38.4600 02-01-1995 09:43:57.028 0.746973 6.62200 0.774600 -38.4600 02-01-1995 09:45:23.048 0.740045 6.62200 0.771400 -38.4600 02-01-1995 09:46:49.064 0.707991 6.62200 0.764800 -38.4600 02-01-1995 09:48:15.084 0.819824 6.62200 0.761500 -38.4600 02-01-1995 09:55:25.168 1.93600 6.62200 0.738100 -38.4600 02-01-1995 10:01:09.236 1.94774 6.62200 0.717400 -38.4600 02-01-1995 10:04:01.268 0.610187 6.62200 0.706900 -38.4600 02-01-1995 10:19:47.456 1.97324 6.62200 0.648900 -38.4600 02-01-1995 10:22:39.492 0.861444 6.62200 0.637600 -38.4600 02-01-1995 10:24:05.512 2.24224 6.62200 0.633900 -38.4600 02-01-1995 10:25:31.528 2.45686 6.62200 0.630100 -38.4600 02-01-1995 10:26:57.548 1.55601 6.62200 0.622500 -38.4600 02-01-1995 10:28:23.564 2.31639 6.62200 0.618600 -38.4600 02-01-1995 19:44:38.144 27.6862 -1.00000E+31 -1.00000E+31 -1.00000E+31 02-01-1995 19:47:30.168 67.4985 -1.00000E+31 -1.00000E+31 -1.00000E+31 02-01-1995 19:50:22.200 73.3218 -1.00000E+31 -1.00000E+31 -1.00000E+31 02-01-1995 19:54:40.256 38.0408 -1.00000E+31 -1.00000E+31 -1.00000E+31 02-01-1995 20:00:24.320 56.6520 6.62300 -1.01400 -38.4300 02-01-1995 20:03:16.360 0.655085 6.62300 -1.01400 -38.4300 02-01-1995 20:06:08.392 0.699194 6.62300 -1.01100 -38.4300 02-01-1995 20:09:00.424 4.11675 6.62300 -1.00600 -38.4300 02-01-1995 20:14:44.496 65.3959 6.62300 -0.996100 -38.4300 02-01-1995 20:17:36.520 49.7105 6.62300 -0.990800 -38.4300 02-01-1995 20:20:28.560 0.628131 6.62300 -0.987100 -38.4300 02-01-1995 20:23:20.592 0.597581 6.62300 -0.981500 -38.4300 02-01-1995 20:26:12.624 0.637788 6.62300 -0.975700 -38.4300 02-01-1995 20:29:04.656 31.0111 6.62300 -0.969800 -38.4300 02-01-1995 20:34:48.728 0.489813 6.62300 -0.957400 -38.4300 02-01-1995 20:37:40.760 0.466408 6.62300 -0.950900 -38.4300 02-01-1995 20:40:32.800 0.451323 6.62300 -0.946500 -38.4300 02-01-1995 20:43:24.832 0.462223 6.62300 -0.939800 -38.4300 02-01-1995 20:46:16.856 0.400314 6.62300 -0.932900 -38.4300 02-01-1995 20:49:08.896 0.505139 6.62300 -0.925900 -38.4300 02-01-1995 20:52:00.928 0.427055 6.62300 -0.918700 -38.4300 02-01-1995 20:54:52.960 0.401472 6.62300 -0.911300 -38.4300 02-01-1995 20:57:44.992 0.490356 6.62300 -0.903800 -38.4300 02-01-1995 21:00:37.032 0.295263 6.62300 -0.896100 -38.4300 02-01-1995 21:03:29.064 0.330565 6.62300 -0.893600 -38.4300 Key Parameter and Survey data (labels K0,K1,K2) are preliminary browse data. 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