Citation:

PANGAEA.954991

Name: Petermann P2: Three-dimensional stratigraphic Horizon in the Petermann Glacier region, Greenland ice sheet (37.5 ka)
Published: 2023-06-23
License: https://creativecommons.org/licenses/by/4.0/
Keywords: ice flow; ice sheets; ice stream; IRH; Polar 6; radio-echo sounding

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Abstract:

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.

Keyword(s):

ice flow; ice sheets; ice stream; IRH; Polar 6; radio-echo sounding

Coverage:

Latitude: 79.600000 * Longitude: -53.714000

Event(s):

Petermann_P * Latitude: 79.600000 * Longitude: -53.714000 * Method/Device: (ARES) * Comment: Radar data of NASA Operation IceBridge & University of Kansas

Comment:

The 3D horizon and traced radar lines are provided in four different data formats:

1. ASCII format of the point cloud of the 3D horizons (meshes.dat) or traced radar lines (line.dat) in the xyz format, where x and y represent the coordinates and z the elevation in meters.

2. Digital Elevation Models (DEMs) in the GeoTIFF (.tif) and NetCDF (.nc) format of the 3D horizons (meshes). The DEMs have a cell size of 50 m.

3. GoCAD (Geological Objects: The 3D horizons (meshes) are stored in triangulated surfaces (.ts) and the traced radar lines as polylines (.pl).

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Comment
1	File type	File type		Bons, Paul D
2	File content	Content		Bons, Paul D	[Version][age (ka)][subset][geometry]
3	Binary Object	Binary		Bons, Paul D
4	Binary Object (Media Type)	Binary (Type)		Bons, Paul D
5	Binary Object (File Size)	Binary (Size)	Bytes	Bons, Paul D

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Basic curation (CurationLevelB)

Size:

30 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

All files referred to in data matrix can be downloaded in one go as ZIP or TAR. Be careful: This download can be very large! To protect our systems from misuse, we require to sign up for an user account before downloading.

1 File type	2 Content	3 Binary	4 Binary (Type)	5 Binary (Size) [Bytes]
ASCII	P2A_V001_37_5_ka_lines	Petermann_P2A_V001_37_5_ka_lines.dat	text/plain	1.5 MBytes
ASCII	P2A_V001_37_5_ka_mesh	Petermann_P2A_V001_37_5_ka_mesh.dat	text/plain	175.4 MBytes
ASCII	P2B_V001_37_5_ka_lines	Petermann_P2B_V001_37_5_ka_lines.dat	text/plain	255.8 kBytes
ASCII	P2B_V001_37_5_ka_mesh	Petermann_P2B_V001_37_5_ka_mesh.dat	text/plain	39 MBytes
DEM	P2_V001_37_5_ka_mesh	Petermann_P2_V001_37_5_ka_mesh.nc	application/x-netcdf	37 MBytes
DEM	P2_V001_37_5_ka_mesh	Petermann_P2_V001_37_5_ka_mesh.tif	image/tiff	37 MBytes
GoCAD	P2A_V001_37_5_ka_lines	Petermann_P2A_V001_37_5_ka_lines.pl	text/plain	2.5 MBytes
GoCAD	P2A_V001_37_5_ka_mesh	Petermann_P2A_V001_37_5_ka_mesh.ts	text/plain	506.9 MBytes
GoCAD	P2B_V001_37_5_ka_lines	Petermann_P2B_V001_37_5_ka_lines.pl	text/plain	422.6 kBytes
GoCAD	P2B_V001_37_5_ka_mesh	Petermann_P2B_V001_37_5_ka_mesh.ts	text/plain	110.8 MBytes