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Petermann P2: Three-dimensional stratigraphic Horizon in the Petermann Glacier region, Greenland ice sheet (37.5 ka) (2023)

Franke, Steven ; Bons, Paul D ; Streng, Kyra ; [et al.]

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Publication Date: 2024-04-20

Description: The Petermann P2 3D horizon is located at the onset of the Petermann Glacier and covers an area of approximately 156 x 95 km. Horizon P2 is ∼ 37.5 ± 2.1 ka old and represents approximately the transition from the last glacial period to the Holocene period. It is located on average 1 km below the ice surface. The horizon is mainly characterized by open cylindrical folds with the fold axis oriented parallel to ice flow. The amplitudes of the folds reach up to 1 km with a wavelength of 10-15 km and are highest in the centre of the data set. P2 (in contrast to P1) shows gaps in regions where the 3D horizons could not be created due to uncertainties or poor visibility of the IRHs. Therefore, the datasets provided for horizon P2 are subdivided into P2A and P2B.

Keywords: Airborne radio-echo sounding; ARES; Binary Object; Binary Object (File Size); Binary Object (Media Type); File content; File type; ice flow; ice sheets; ice stream; IRH; Petermann_P; Polar 6; radio-echo sounding

Type: Dataset

Format: text/tab-separated-values, 30 data points

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Petermann P1: Three-dimensional stratigraphic Horizon in the Petermann Glacier region, Greenland ice sheet (12.0 ka) (2023)

Franke, Steven ; Bons, Paul D ; Streng, Kyra ; [et al.]

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Publication Date: 2024-04-20

Description: The Petermann P1 3D horizon is located at the onset of the Petermann Glacier and covers an area of approximately 156 x 95 km. Horizon P1 is ∼ 12.0 ± 0.9 ka old and represents approximately the transition from the last glacial period to the Holocene period. It is located on average 1 km below the ice surface. The horizon is mainly characterized by open cylindrical folds with the fold axis oriented parallel to ice flow. The amplitudes of the folds reach up to 1 km with a wavelength of 10-15 km and are highest in the centre of the data set.

Type: Dataset

Format: text/tab-separated-values, 18 data points

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Internal reflection horizons of ice shelves and ice rises in eastern Dronning Maud Land (East Antarctica) - CHIRP_20190106_02 (2023)

Koch, Inka ; Drews, Reinhard ; Muhle, Lea Sophie ; [et al.]

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Publication Date: 2024-06-12

Description: 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).

Keywords: AC; Airborne Radar; Aircraft; Antarctica; AWI UWB; DATE/TIME; Dronning Maud Land; ice rise; Ice shelf; Internal Reflection Horizon; IRH; JuRaS, CHIRP; LATITUDE; LONGITUDE; P6_215_UWB_2018_1901061302; P6-215_UWB_2018; Pick Date/Time; POLAR 6; Polar stereographic projection, X; Polar stereographic projection, Y; Profile ID; radar; Survey ID; Trace Number; Two-way traveltime to ice base; Two-way traveltime to internal reflection horizon; Ultra-wideband radar (UWB), MCoRDS 5

Type: Dataset

Format: text/tab-separated-values, 437361 data points

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