/* DATA DESCRIPTION: Citation: Steinhage, Daniel; Helm, Veit (2026): ARK 1997: AWI airborne Radio-Echo Sounding data over the North GRIP ice core site in central Greenland and south-west Greenland (Nord GRIP project) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.995616 Abstract: This dataset contains airborne radar data acquired using the AWI EMR system (Nixdorf et al., 1999) during the Arctic season of 1997. The profiles extend in a grid around the North GRIP ice core site in central Greenland and in south-west Greenland. The data are available as netCDF files (including waveforms and metadata), KML files of the profile line locations, and quicklook images of the radargrams. Keyword(s): AWI EMR; Greenland ice cores; Greenland ice sheet; Ice core; NGRIP; NorthGRIP ice core; Polar 2; radio-echo sounding Related to: Eisen, Olaf; Steinhage, Daniel; Franke, Steven; Helm, Veit; Binder, Tobias; Drews, Reinhard; Eagles, Graeme; Humbert, Angelika; Jansen, Daniela; Jokat, Wilfried; Lambrecht, Astrid; Mieth, Matthias; Riedel, Sven; Miller, Heinrich (2024): Collection of datasets from AWI's radio-echo sounding systems on ice sheets and glaciers [dataset bibliography]. PANGAEA, https://doi.org/10.1594/PANGAEA.972094 Franke, Steven; Steinhage, Daniel; Helm, Veit; Binder, Tobias; Nixdorf, Uwe; Miller, Heinrich; Humbert, Angelika; Jansen, Daniela; Eagles, Graeme; Eisermann, Hannes; Jokat, Wilfried; Ruppel, Antonia; Drews, Reinhard; Zuhr, Alexandra; Driemel, Amelie; Walter, Andreas; Konopatzky, Peter; Heß, Robin; Haas, Antonie; Koppe, Roland; Andreas, Pascal H; Eisen, Olaf (2026): Review article: 30 years of airborne radar surveys on the Antarctic and Greenland ice sheets by the Alfred Wegener Institute. The Cryosphere, 20(4), 2485-2530, https://doi.org/10.5194/tc-20-2485-2026 Göktas, Fidan (1999): Ergebnisse der Untersuchung des grönlandischen Inlandeises mit dem elektromagnetischen Reflexionsverfahren in der Umgebung von NGRIP (Results from airborne radio-echosounding of the Greenland icesheet in the vicinity of NGRIP). Berichte zur Polarforschung = Reports on Polar Research, 336, 97 pp, https://doi.org/10.2312/BzP_0336_1999 Nixdorf, Uwe; Göktas, Fidan (2001): Spatial depth distribution of the subglacial bed and internal layers in the ice around NGRIP, Greenland, derived with airborne RES. Journal of Applied Geophysics, 47(3-4), 175-182, https://doi.org/10.1016/S0926-9851(01)00062-3 Nixdorf, Uwe; Steinhage, Daniel; Meyer, Uwe F; Hempel, L; Jenett, Martin; Wachs, P; Miller, Heinrich (1999): The newly developed airborne radio-echo sounding system of the AWI as a glaciological tool. Annals of Glaciology, 29, 231-238, https://doi.org/10.3189/172756499781821346 Additional metadata: O2A Registry: Metadata for radar system Ice Thickness Radar 150 MHz at current version. Alfred Wegener Institut Helmholtz Centre for Polar and Marine Research, https://registry.o2a-data.de/items/6794 Project(s): North Greenland Ice Core Project (NGRIP) (URI: https://en.wikipedia.org/wiki/North_Greenland_Ice_Core_Project) Coverage: MEDIAN LATITUDE: 70.015182 * MEDIAN LONGITUDE: -47.474164 * SOUTH-BOUND LATITUDE: 65.406593 * WEST-BOUND LONGITUDE: -53.252098 * NORTH-BOUND LATITUDE: 75.095619 * EAST-BOUND LONGITUDE: -42.316578 DATE/TIME START: 1997-05-20T00:00:00 * DATE/TIME END: 1997-06-20T00:00:00 Campaign(s): NGRIP_1997 * DATE/TIME START: 1997-05-20T00:00:00 * DATE/TIME END: 1997-06-20T00:00:00 * BASIS: POLAR 2 Event(s): NGRIP_1997_01a * LATITUDE START: 67.011887 * LONGITUDE START: -50.695793 * LATITUDE END: 67.011810 * LONGITUDE END: -50.695263 * DATE/TIME START: 1997-05-21T14:35:18 * DATE/TIME END: 1997-05-21T16:50:40 * LOCATION: Davis Strait * CAMPAIGN: NGRIP_1997 * BASIS: POLAR 2 * METHOD/DEVICE: Aircraft (AC) NGRIP_1997_01b * LATITUDE START: 66.216690 * LONGITUDE START: -44.549225 * LATITUDE END: 67.012009 * LONGITUDE END: -50.696304 * DATE/TIME START: 1997-05-21T20:39:13 * DATE/TIME END: 1997-05-21T22:14:38 * LOCATION: Greenland * CAMPAIGN: NGRIP_1997 * BASIS: POLAR 2 * METHOD/DEVICE: Aircraft (AC) NGRIP_1997_02 * LATITUDE START: 67.011398 * LONGITUDE START: -50.695530 * LATITUDE END: 66.530708 * LONGITUDE END: -47.100006 * DATE/TIME START: 1997-05-23T15:58:54 * DATE/TIME END: 1997-05-23T17:49:52 * LOCATION: Davis Strait * CAMPAIGN: NGRIP_1997 * BASIS: POLAR 2 * METHOD/DEVICE: Aircraft (AC) NGRIP_1997_03 * LATITUDE START: 67.013603 * LONGITUDE START: -50.693470 * LATITUDE END: 67.030403 * LONGITUDE END: -50.564602 * DATE/TIME START: 1997-05-24T19:43:36 * DATE/TIME END: 1997-05-24T22:59:50 * LOCATION: Davis Strait * CAMPAIGN: NGRIP_1997 * BASIS: POLAR 2 * METHOD/DEVICE: Aircraft (AC) NGRIP_1997_04 * LATITUDE START: 67.011642 * LONGITUDE START: -50.695084 * LATITUDE END: 65.406593 * LONGITUDE END: -53.252098 * DATE/TIME START: 1997-05-30T11:25:26 * DATE/TIME END: 1997-05-30T13:37:48 * LOCATION: Davis Strait * CAMPAIGN: NGRIP_1997 * BASIS: POLAR 2 * METHOD/DEVICE: Aircraft (AC) NGRIP_1997_05 * LATITUDE START: 67.011734 * LONGITUDE START: -50.695889 * LATITUDE END: 66.702286 * LONGITUDE END: -51.695042 * DATE/TIME START: 1997-06-03T14:46:40 * DATE/TIME END: 1997-06-03T20:06:26 * LOCATION: Davis Strait * CAMPAIGN: NGRIP_1997 * BASIS: POLAR 2 * METHOD/DEVICE: Aircraft (AC) NGRIP_1997_06 * LATITUDE START: 67.011421 * LONGITUDE START: -50.695992 * LATITUDE END: 67.279465 * LONGITUDE END: -48.951801 * DATE/TIME START: 1997-06-09T16:13:55 * DATE/TIME END: 1997-06-09T20:25:16 * LOCATION: Davis Strait * CAMPAIGN: NGRIP_1997 * BASIS: POLAR 2 * METHOD/DEVICE: Aircraft (AC) NGRIP_1997_07a * LATITUDE START: 67.014397 * LONGITUDE START: -50.692123 * LATITUDE END: 69.553574 * LONGITUDE END: -49.639008 * DATE/TIME START: 1997-06-13T16:19:13 * DATE/TIME END: 1997-06-13T20:06:55 * LOCATION: Davis Strait * CAMPAIGN: NGRIP_1997 * BASIS: POLAR 2 * METHOD/DEVICE: Aircraft (AC) NGRIP_1997_07b * LATITUDE START: 67.005051 * LONGITUDE START: -51.017094 * LATITUDE END: 66.924164 * LONGITUDE END: -51.049496 * DATE/TIME START: 1997-06-13T22:29:21 * DATE/TIME END: 1997-06-13T22:53:54 * LOCATION: Davis Strait * CAMPAIGN: NGRIP_1997 * BASIS: POLAR 2 * METHOD/DEVICE: Aircraft (AC) NGRIP_1997_08 * LATITUDE START: 67.011497 * LONGITUDE START: -50.696014 * LATITUDE END: 75.088257 * LONGITUDE END: -42.355980 * DATE/TIME START: 1997-06-14T13:32:00 * DATE/TIME END: 1997-06-14T17:33:59 * LOCATION: Davis Strait * CAMPAIGN: NGRIP_1997 * BASIS: POLAR 2 * METHOD/DEVICE: Aircraft (AC) NGRIP_1997_09 * LATITUDE START: 74.985855 * LONGITUDE START: -42.497765 * LATITUDE END: 70.295097 * LONGITUDE END: -49.845890 * DATE/TIME START: 1997-06-15T13:44:39 * DATE/TIME END: 1997-06-15T15:59:09 * LOCATION: Greenland * CAMPAIGN: NGRIP_1997 * BASIS: POLAR 2 * METHOD/DEVICE: Aircraft (AC) NGRIP_1997_11 * LATITUDE START: 67.011505 * LONGITUDE START: -50.696186 * LATITUDE END: 75.095070 * LONGITUDE END: -42.317688 * DATE/TIME START: 1997-06-16T14:47:57 * DATE/TIME END: 1997-06-16T18:13:13 * LOCATION: Greenland * CAMPAIGN: NGRIP_1997 * BASIS: POLAR 2 * METHOD/DEVICE: Aircraft (AC) NGRIP_1997_13 * LATITUDE START: 75.095619 * LONGITUDE START: -42.316830 * LATITUDE END: 75.095291 * LONGITUDE END: -42.316578 * DATE/TIME START: 1997-06-17T00:02:50 * DATE/TIME END: 1997-06-17T03:44:57 * LOCATION: Greenland * CAMPAIGN: NGRIP_1997 * BASIS: POLAR 2 * METHOD/DEVICE: Aircraft (AC) NGRIP_1997_14 * LATITUDE START: 75.095612 * LONGITUDE START: -42.317665 * LATITUDE END: 75.095268 * LONGITUDE END: -42.317490 * DATE/TIME START: 1997-06-17T12:52:13 * DATE/TIME END: 1997-06-17T17:29:20 * LOCATION: Greenland * CAMPAIGN: NGRIP_1997 * BASIS: POLAR 2 * METHOD/DEVICE: Aircraft (AC) NGRIP_1997_15 * LATITUDE START: 75.095253 * LONGITUDE START: -42.317429 * LATITUDE END: 75.095238 * LONGITUDE END: -42.317593 * DATE/TIME START: 1997-06-17T19:56:01 * DATE/TIME END: 1997-06-18T00:29:41 * LOCATION: Greenland * CAMPAIGN: NGRIP_1997 * BASIS: POLAR 2 * METHOD/DEVICE: Aircraft (AC) NGRIP_1997_16 * LATITUDE START: 75.095161 * LONGITUDE START: -42.318687 * LATITUDE END: 75.095345 * LONGITUDE END: -42.317654 * DATE/TIME START: 1997-06-18T11:30:07 * DATE/TIME END: 1997-06-18T15:47:16 * LOCATION: Greenland * CAMPAIGN: NGRIP_1997 * BASIS: POLAR 2 * METHOD/DEVICE: Aircraft (AC) NGRIP_1997_17 * LATITUDE START: 75.095444 * LONGITUDE START: -42.317863 * LATITUDE END: 69.411842 * LONGITUDE END: -50.780430 * DATE/TIME START: 1997-06-18T17:49:40 * DATE/TIME END: 1997-06-18T20:51:33 * LOCATION: Greenland * CAMPAIGN: NGRIP_1997 * BASIS: POLAR 2 * METHOD/DEVICE: Aircraft (AC) Comment: Project PI: Daniel Steinhage (AWI) Contact persons for AWI Radio-echo sounding data: Daniel Steinhage (daniel.steinhage@awi.de), Veit Helm (veit.helm@awi.de), Olaf Eisen (olaf.eisen@awi.de) The data are available as netCDF files, KML files, and quicklook images (JPEGs) of the radargrams. -- The netCDF files contain the following variables: altitude: Platform altitude (WGS84) in meters bed_elevation: bed elevation for each trace (using no firn correction and permitivity of ice: 3.15) in meters bed_pick: picked bed location for each trace, expressed as twt in seconds data: radar data data_agc: scaled radar data using automatic gain control (AGC) distance: Along-track distance in meters ice_thickness: ice thickness for each trace (using no firn correction and permitivity of ice: 3.15) in meters lat: Latitude in decimal degrees lon: Longitude in decimal degrees range: Range between sensor and surface in meters spacing: along track trace to trace spacing in meters surface: surface elevation derived from radar (WGS84) in meters surface_pick: picked surface reflection in two-way travel time in seconds time: Seconds of day twt: Two-way travel time (twt) in seconds -- The KML files are in EPSG:4326, and the quicklook images show the AGC product of the radargram. Parameter(s): Season (Season) * PI: Steinhage, Daniel (Daniel.Steinhage@awi.de, https://www.awi.de/en/about-us/organisation/staff/single-view/daniel-steinhage.html) Profile ID (Profile ID) * PI: Steinhage, Daniel (Daniel.Steinhage@awi.de, https://www.awi.de/en/about-us/organisation/staff/single-view/daniel-steinhage.html) Instrument (Instrument) * PI: Steinhage, Daniel (Daniel.Steinhage@awi.de, https://www.awi.de/en/about-us/organisation/staff/single-view/daniel-steinhage.html) Radar product (Radar prod) * PI: Steinhage, Daniel (Daniel.Steinhage@awi.de, https://www.awi.de/en/about-us/organisation/staff/single-view/daniel-steinhage.html) netCDF file (netCDF) * PI: Steinhage, Daniel (Daniel.Steinhage@awi.de, https://www.awi.de/en/about-us/organisation/staff/single-view/daniel-steinhage.html) * METHOD/DEVICE: Ice Thickness Radar radio-echo sounding RES [Nixdorf et al. 1999] (URI: https://doi.org/10.3189/172756499781821346) netCDF file (File Size) [Bytes] (netCDF (Size)) * PI: Steinhage, Daniel (Daniel.Steinhage@awi.de, https://www.awi.de/en/about-us/organisation/staff/single-view/daniel-steinhage.html) * METHOD/DEVICE: Ice Thickness Radar radio-echo sounding RES [Nixdorf et al. 1999] (URI: https://doi.org/10.3189/172756499781821346) GIS file (GIS) * PI: Steinhage, Daniel (Daniel.Steinhage@awi.de, https://www.awi.de/en/about-us/organisation/staff/single-view/daniel-steinhage.html) * METHOD/DEVICE: Ice Thickness Radar radio-echo sounding RES [Nixdorf et al. 1999] (URI: https://doi.org/10.3189/172756499781821346) * COMMENT: KML Files Image (IMAGE) * PI: Steinhage, Daniel (Daniel.Steinhage@awi.de, https://www.awi.de/en/about-us/organisation/staff/single-view/daniel-steinhage.html) * METHOD/DEVICE: Ice Thickness Radar radio-echo sounding RES [Nixdorf et al. 1999] (URI: https://doi.org/10.3189/172756499781821346) * COMMENT: Quicklook License: Creative Commons Attribution 4.0 International (CC-BY-4.0) (URI: https://creativecommons.org/licenses/by/4.0/) Status: Curation Level: Enhanced curation (URI: https://wiki.pangaea.de/wiki/Curation_levels) Size: 266 data points Files: All files referred to in data matrix can be downloaded in one go as ZIP or TAR (PANGAEA user account required). To download single files, use the filename from data matrix appended to "https://download.pangaea.de/dataset/995616/files/". */ Season Profile ID Instrument Radar prod netCDF netCDF (Size) [Bytes] GIS IMAGE ARK 1997 arkr1997_9705230201_EMR600_19970523_00 EMR 600 ns pulse arkr1997_9705230201_EMR600_19970523_00.nc 475.9 MBytes arkr1997_9705230201_EMR600_19970523_00.kml arkr1997_9705230201_EMR600_19970523_00.jpg ARK 1997 arkr1997_9705230201_EMR60_19970523_00 EMR 60 ns pulse arkr1997_9705230201_EMR60_19970523_00.nc 475.6 MBytes arkr1997_9705230201_EMR60_19970523_00.kml arkr1997_9705230201_EMR60_19970523_00.jpg ARK 1997 arkr1997_9705230202_EMR600_19970523_00 EMR 600 ns pulse arkr1997_9705230202_EMR600_19970523_00.nc 189.7 MBytes arkr1997_9705230202_EMR600_19970523_00.kml arkr1997_9705230202_EMR600_19970523_00.jpg ARK 1997 arkr1997_9705230203_EMR60_19970523_00 EMR 60 ns pulse arkr1997_9705230203_EMR60_19970523_00.nc 41.3 MBytes arkr1997_9705230203_EMR60_19970523_00.kml arkr1997_9705230203_EMR60_19970523_00.jpg ARK 1997 arkr1997_9705240301_EMR600_19970524_00 EMR 600 ns pulse arkr1997_9705240301_EMR600_19970524_00.nc 431.2 MBytes arkr1997_9705240301_EMR600_19970524_00.kml arkr1997_9705240301_EMR600_19970524_00.jpg ARK 1997 arkr1997_9705240301_EMR600_19970524_01 EMR 600 ns pulse arkr1997_9705240301_EMR600_19970524_01.nc 191.8 MBytes arkr1997_9705240301_EMR600_19970524_01.kml arkr1997_9705240301_EMR600_19970524_01.jpg ARK 1997 arkr1997_9705240301_EMR60_19970524_00 EMR 60 ns pulse arkr1997_9705240301_EMR60_19970524_00.nc 373.1 MBytes arkr1997_9705240301_EMR60_19970524_00.kml arkr1997_9705240301_EMR60_19970524_00.jpg ARK 1997 arkr1997_9705240301_EMR60_19970524_01 EMR 60 ns pulse arkr1997_9705240301_EMR60_19970524_01.nc 188.9 MBytes arkr1997_9705240301_EMR60_19970524_01.kml arkr1997_9705240301_EMR60_19970524_01.jpg ARK 1997 arkr1997_9705240301_EMR60_19970524_02 EMR 60 ns pulse arkr1997_9705240301_EMR60_19970524_02.nc 228.1 MBytes arkr1997_9705240301_EMR60_19970524_02.kml arkr1997_9705240301_EMR60_19970524_02.jpg ARK 1997 arkr1997_9705240302_EMR600_19970524_00 EMR 600 ns pulse arkr1997_9705240302_EMR600_19970524_00.nc 220.2 MBytes arkr1997_9705240302_EMR600_19970524_00.kml arkr1997_9705240302_EMR600_19970524_00.jpg ARK 1997 arkr1997_9705240302_EMR60_19970524_00 EMR 60 ns pulse arkr1997_9705240302_EMR60_19970524_00.nc 230.2 MBytes arkr1997_9705240302_EMR60_19970524_00.kml arkr1997_9705240302_EMR60_19970524_00.jpg ARK 1997 arkr1997_9705240303_EMR600_19970524_00 EMR 600 ns pulse arkr1997_9705240303_EMR600_19970524_00.nc 343.8 MBytes arkr1997_9705240303_EMR600_19970524_00.kml arkr1997_9705240303_EMR600_19970524_00.jpg ARK 1997 arkr1997_9705240303_EMR60_19970524_00 EMR 60 ns pulse arkr1997_9705240303_EMR60_19970524_00.nc 344.1 MBytes arkr1997_9705240303_EMR60_19970524_00.kml arkr1997_9705240303_EMR60_19970524_00.jpg ARK 1997 arkr1997_9705300401_EMR600_19970530_00 EMR 600 ns pulse arkr1997_9705300401_EMR600_19970530_00.nc 54.1 MBytes arkr1997_9705300401_EMR600_19970530_00.kml arkr1997_9705300401_EMR600_19970530_00.jpg ARK 1997 arkr1997_9705300401_EMR600_19970530_01 EMR 600 ns pulse arkr1997_9705300401_EMR600_19970530_01.nc 274 MBytes arkr1997_9705300401_EMR600_19970530_01.kml arkr1997_9705300401_EMR600_19970530_01.jpg ARK 1997 arkr1997_9705300402_EMR600_19970530_00 EMR 600 ns pulse arkr1997_9705300402_EMR600_19970530_00.nc 318.4 MBytes arkr1997_9705300402_EMR600_19970530_00.kml arkr1997_9705300402_EMR600_19970530_00.jpg ARK 1997 arkr1997_9705300402_EMR60_19970530_00 EMR 60 ns pulse arkr1997_9705300402_EMR60_19970530_00.nc 318.9 MBytes arkr1997_9705300402_EMR60_19970530_00.kml arkr1997_9705300402_EMR60_19970530_00.jpg ARK 1997 arkr1997_9706030501_EMR600_19970603_00 EMR 600 ns pulse arkr1997_9706030501_EMR600_19970603_00.nc 1.1 GBytes arkr1997_9706030501_EMR600_19970603_00.kml arkr1997_9706030501_EMR600_19970603_00.jpg ARK 1997 arkr1997_9706030501_EMR60_19970603_00 EMR 60 ns pulse arkr1997_9706030501_EMR60_19970603_00.nc 1 GBytes arkr1997_9706030501_EMR60_19970603_00.kml arkr1997_9706030501_EMR60_19970603_00.jpg ARK 1997 arkr1997_9706030502_EMR600_19970603_00 EMR 600 ns pulse arkr1997_9706030502_EMR600_19970603_00.nc 1.2 GBytes arkr1997_9706030502_EMR600_19970603_00.kml arkr1997_9706030502_EMR600_19970603_00.jpg ARK 1997 arkr1997_9706090601_EMR600_19970609_00 EMR 600 ns pulse arkr1997_9706090601_EMR600_19970609_00.nc 492.8 MBytes arkr1997_9706090601_EMR600_19970609_00.kml arkr1997_9706090601_EMR600_19970609_00.jpg ARK 1997 arkr1997_9706090601_EMR600_19970609_01 EMR 600 ns pulse arkr1997_9706090601_EMR600_19970609_01.nc 1.4 GBytes arkr1997_9706090601_EMR600_19970609_01.kml arkr1997_9706090601_EMR600_19970609_01.jpg ARK 1997 arkr1997_9706130701_EMR600_19970613_00 EMR 600 ns pulse arkr1997_9706130701_EMR600_19970613_00.nc 1.2 GBytes arkr1997_9706130701_EMR600_19970613_00.kml arkr1997_9706130701_EMR600_19970613_00.jpg ARK 1997 arkr1997_9706130701_EMR60_19970613_00 EMR 60 ns pulse arkr1997_9706130701_EMR60_19970613_00.nc 1.1 GBytes arkr1997_9706130701_EMR60_19970613_00.kml arkr1997_9706130701_EMR60_19970613_00.jpg ARK 1997 arkr1997_9706130702_EMR600_19970613_00 EMR 600 ns pulse arkr1997_9706130702_EMR600_19970613_00.nc 359.7 MBytes arkr1997_9706130702_EMR600_19970613_00.kml arkr1997_9706130702_EMR600_19970613_00.jpg ARK 1997 arkr1997_9706130702_EMR60_19970613_00 EMR 60 ns pulse arkr1997_9706130702_EMR60_19970613_00.nc 358.3 MBytes arkr1997_9706130702_EMR60_19970613_00.kml arkr1997_9706130702_EMR60_19970613_00.jpg ARK 1997 arkr1997_9706140801_EMR60_19970614_00 EMR 60 ns pulse arkr1997_9706140801_EMR60_19970614_00.nc 1.9 GBytes arkr1997_9706140801_EMR60_19970614_00.kml arkr1997_9706140801_EMR60_19970614_00.jpg ARK 1997 arkr1997_9706140802_EMR600_19970617_00 EMR 600 ns pulse arkr1997_9706140802_EMR600_19970617_00.nc 2.2 GBytes arkr1997_9706140802_EMR600_19970617_00.kml arkr1997_9706140802_EMR600_19970617_00.jpg ARK 1997 arkr1997_9706140802_EMR60_19970617_00 EMR 60 ns pulse arkr1997_9706140802_EMR60_19970617_00.nc 2.1 GBytes arkr1997_9706140802_EMR60_19970617_00.kml arkr1997_9706140802_EMR60_19970617_00.jpg ARK 1997 arkr1997_9706161302_EMR600_19970616_00 EMR 600 ns pulse arkr1997_9706161302_EMR600_19970616_00.nc 1.6 GBytes arkr1997_9706161302_EMR600_19970616_00.kml arkr1997_9706161302_EMR600_19970616_00.jpg ARK 1997 arkr1997_9706161302_EMR60_19970616_00 EMR 60 ns pulse arkr1997_9706161302_EMR60_19970616_00.nc 1.5 GBytes arkr1997_9706161302_EMR60_19970616_00.kml arkr1997_9706161302_EMR60_19970616_00.jpg ARK 1997 arkr1997_9706171401_EMR600_19970617_00 EMR 600 ns pulse arkr1997_9706171401_EMR600_19970617_00.nc 2 GBytes arkr1997_9706171401_EMR600_19970617_00.kml arkr1997_9706171401_EMR600_19970617_00.jpg ARK 1997 arkr1997_9706171401_EMR60_19970617_00 EMR 60 ns pulse arkr1997_9706171401_EMR60_19970617_00.nc 1.9 GBytes arkr1997_9706171401_EMR60_19970617_00.kml arkr1997_9706171401_EMR60_19970617_00.jpg ARK 1997 arkr1997_9706181501_EMR600_19970618_00 EMR 600 ns pulse arkr1997_9706181501_EMR600_19970618_00.nc 2.1 GBytes arkr1997_9706181501_EMR600_19970618_00.kml arkr1997_9706181501_EMR600_19970618_00.jpg ARK 1997 arkr1997_9706181501_EMR60_19970618_00 EMR 60 ns pulse arkr1997_9706181501_EMR60_19970618_00.nc 2 GBytes arkr1997_9706181501_EMR60_19970618_00.kml arkr1997_9706181501_EMR60_19970618_00.jpg ARK 1997 arkr1997_9706181502_EMR600_19970618_00 EMR 600 ns pulse arkr1997_9706181502_EMR600_19970618_00.nc 280.7 MBytes arkr1997_9706181502_EMR600_19970618_00.kml arkr1997_9706181502_EMR600_19970618_00.jpg ARK 1997 arkr1997_9706181502_EMR60_19970618_00 EMR 60 ns pulse arkr1997_9706181502_EMR60_19970618_00.nc 274.8 MBytes arkr1997_9706181502_EMR60_19970618_00.kml arkr1997_9706181502_EMR60_19970618_00.jpg ARK 1997 arkr1997_9706181503_EMR600_19970618_00 EMR 600 ns pulse arkr1997_9706181503_EMR600_19970618_00.nc 1 GBytes arkr1997_9706181503_EMR600_19970618_00.kml arkr1997_9706181503_EMR600_19970618_00.jpg