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Koch, Inka; Drews, Reinhard; Muhle, Lea Sophie; Franke, Steven; Jansen, Daniela; Oraschewski, Falk M; Spiegel, Heiko; Višnjević, Vjeran; Matsuoka, Kenichi; Pattyn, Frank; Eisen, Olaf (2023): Internal reflection horizons of ice shelves and ice rises in eastern Dronning Maud Land (East Antarctica) - CHIRP_20190107_01 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.950235, In: Koch, I et al. (2023): Internal reflection horizons of ice shelves and ice rises in eastern Dronning Maud Land (East Antarctica) from multisystem radio-echo sounding data [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.950383

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Abstract:
Ice shelves regulate ice flow from the Antarctic ice sheet towards the ocean and their evolution depends on spatiotemporal patterns of surface accumulation, basal melt, and ice dynamics. These processes shape the ice stratigraphy, which can be imaged by radar and digitized in the form of internal reflection horizons (IRHs). Here, we synthesized IRHs from three airborne and ground-based surveys covering three ice rises and shelves in coastal eastern Dronning Maud Land (East Antarctica).
Keyword(s):
Airborne Radar; Antarctica; AWI UWB; Dronning Maud Land; ice rise; Ice shelf; Internal Reflection Horizon; IRH; radar
Funding:
German Research Foundation (DFG), grant/award no. DR 822/3-1: Emmy Noether Program DR 822/3-1
Coverage:
Median Latitude: -70.277581 * Median Longitude: 26.436849 * South-bound Latitude: -70.516840 * West-bound Longitude: 25.604896 * North-bound Latitude: -70.069073 * East-bound Longitude: 27.141375
Date/Time Start: 2019-01-07T00:00:00 * Date/Time End: 2019-01-07T00:00:00
Event(s):
P6_215_UWB_2018_1901071401 * Latitude Start: -71.949290 * Longitude Start: 23.299970 * Latitude End: -71.949284 * Longitude End: 23.299488 * Date/Time Start: 2019-01-07T07:56:17 * Date/Time End: 2019-01-07T11:42:15 * Campaign: P6-215_UWB_2018 (JuRaS, CHIRP) * Basis: POLAR 6 * Method/Device: Aircraft (AC)
Comment:
radar type: airborne AWI UWB (MCoRDS 5), SAR focussed
frequency: 150 – 520 MHz, transmission signal: linear frequency modulated chirp
coordinator: Reinhard Drews
tracing operator(s): Inka Koch, Heiko Spiegel, Leah Sophie Muhle
original file names: 20190107_01_002, 20190107_01_003, 20190107_01_004, 20190107_01_005, 20190107_01_006, 20190107_01_008, 20190107_01_009, 20190107_01_010
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All IRHs are sorted according to depth with the shallowest layer having the smallest ID number
IRHs 2 & 5 are pattern-matched with IRHs from MCoRDS profiles collected 20190106
Other IRHs are not to be matched with IRHs of the same name in MCoRDS profiles collected 20190106
Visual pattern matching has been applied when gaps occur in the IRHs
basal pick is corrected to the first break
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DATE/TIMEDate/TimeDrews, ReinhardGeocode
2Survey IDSurvey IDDrews, Reinhard
3Profile IDProfile IDDrews, Reinhard
4LONGITUDELongitudeDrews, ReinhardGeocode
5LATITUDELatitudeDrews, ReinhardGeocode – aquisition date
6Polar stereographic projection, XPolar stereo XmDrews, Reinhardproject 71 south (EPSG:3031)
7Polar stereographic projection, YPolar stereo YmDrews, Reinhardproject 71 south (EPSG:3031)
8Trace NumberTraceDrews, Reinhardof the radar transect along-track
9Pick Date/TimePick DateDrews, Reinharddate the IRHs were last picked or edited
10Two-way traveltime to ice baseTWT ice basesDrews, ReinhardUltra-wideband radar (UWB), MCoRDS 5to the ice base in seconds from the surface
11Two-way traveltime to internal reflection horizonTWT IRHsDrews, ReinhardUltra-wideband radar (UWB), MCoRDS 5IRH_01
12Two-way traveltime to internal reflection horizonTWT IRHsDrews, ReinhardUltra-wideband radar (UWB), MCoRDS 5IRH_02
13Two-way traveltime to internal reflection horizonTWT IRHsDrews, ReinhardUltra-wideband radar (UWB), MCoRDS 5IRH_03
14Two-way traveltime to internal reflection horizonTWT IRHsDrews, ReinhardUltra-wideband radar (UWB), MCoRDS 5IRH_04
15Two-way traveltime to internal reflection horizonTWT IRHsDrews, ReinhardUltra-wideband radar (UWB), MCoRDS 5IRH_05
16Two-way traveltime to internal reflection horizonTWT IRHsDrews, ReinhardUltra-wideband radar (UWB), MCoRDS 5IRH_06
17Two-way traveltime to internal reflection horizonTWT IRHsDrews, ReinhardUltra-wideband radar (UWB), MCoRDS 5IRH_07
18Two-way traveltime to internal reflection horizonTWT IRHsDrews, ReinhardUltra-wideband radar (UWB), MCoRDS 5IRH_08
19Two-way traveltime to internal reflection horizonTWT IRHsDrews, ReinhardUltra-wideband radar (UWB), MCoRDS 5IRH_09
20Two-way traveltime to internal reflection horizonTWT IRHsDrews, ReinhardUltra-wideband radar (UWB), MCoRDS 5IRH_10
21Two-way traveltime to internal reflection horizonTWT IRHsDrews, ReinhardUltra-wideband radar (UWB), MCoRDS 5IRH_11
22Two-way traveltime to internal reflection horizonTWT IRHsDrews, ReinhardUltra-wideband radar (UWB), MCoRDS 5IRH_12
Change history:
2024-08-05T04:51:54 – Unit of Polar stereographic projection changed from "km" to "m".
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
818947 data points

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