Simkins, Lauren M; Greenwood, Sarah L; Munevar Garcia, Santiago; Eareckson, Elizabeth; Anderson, John B; Prothro, Lindsay O (2021): Derived geomorphic features (shapefiles) from multibeam bathymetry processed data (Kongsberg EM 122 working area dataset) of RVIB NATHANIEL B. PALMER during cruise NBP150-02 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.937601, In: Simkins, LM et al. (2021): Pennell Trough, Ross Sea bathymetry and glacial landforms [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.937602
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Bathymetry from multibeam echo sounding data in Pennell Trough, Ross Sea, Antarctica was collected onboard the RVIB Nathaniel B. Palmer (NBP) 15-02 cruise using a Kongsberg EM122 operating in dual swath mode at 12 kHz frequency with a 1°×1° beam width, swath angular coverage set to 62°×62°, and 30-60% overlap between survey lines. All raw, ping-edited geophysical data collected on NBP150-02 can be accessed using the Marine Geoscience Data System (Cruise DOI: 10.7284/901477). The bathymetry dataset here is gridded at 20-m resolution with a water depth-dependent vertical resolution on the order of decimeters. Two shapefiles are provided for ice-marginal landforms and meltwater landforms observable in the bathymetry data. The purpose of collecting the bathymetry data on cruise NBP15-02 was to better understand the glacial history of the Ross Sea, and the dataset, inclusive of bathymetry data and shapefiles of glacial landforms, from Pennell Trough are used to understand impacts on subglacial channel morphology and organization during the deglaciation of the region following the Last Glacial Maximum.
Related to:
Simkins, Lauren M; Greenwood, Sarah L; Munevar Garcia, Santiago; Anderson, John B; Prothro, Lindsay O (2021): Topographic Controls on Channelized Meltwater in the Subglacial Environment. Geophysical Research Letters, 48(20), e2021GL094678, https://doi.org/10.1029/2021GL094678
Other version:
Simkins, Lauren M (2021): Pennell Trough, Ross Sea bathymetry and glacial landforms. U.S. Antarctic Program (USAP) Data Center, https://doi.org/10.15784/601474
Funding:
National Science Foundation (NSF), grant/award no. OPP-1246353: Evidence for Paleo Ice Stream Collapse in the Western Ross Sea since the Last Glacial Maximum
National Science Foundation (NSF), grant/award no. OPP-1745055: Collaborative Research: Topographic Controls on Antarctic Ice Sheet Grounding Line Behavior - Integrating Models and Observations
Coverage:
Latitude: -76.147450 * Longitude: 175.707200
Event(s):
NBP1502_0_Underway-1 * Latitude: -76.147450 * Longitude: 175.707200 * Campaign: NBP1502A * Basis: Nathaniel B. Palmer * Method/Device: Swath-mapping system Simrad EM122 (Kongsberg Maritime AS) * Comment: Event shows the center loaction of the mulitbeam survey (raster dataset) during RVIB Nathaniel B. Palmer expedition NBP1502
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Binary Object | Binary | Simkins, Lauren M | |||
| 2 | Binary Object (Media Type) | Binary (Type) | Simkins, Lauren M | |||
| 3 | Binary Object (File Size) | Binary (Size) | Bytes | Simkins, Lauren M | ||
| 4 | File content | Content | Simkins, Lauren M |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
32 data points
Data
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| 1 Binary | 2 Binary (Type) | 3 Binary (Size) [Bytes] | 4 Content |
|---|---|---|---|
| corridor_channels.cpg | text/plain | 5 Bytes | polylines of subglacial meltwater landforms |
| corridor_channels.dbf | application/octet-stream | 1.1 kBytes | polylines of subglacial meltwater landforms |
| corridor_channels.prj | text/plain | 409 Bytes | polylines of subglacial meltwater landforms |
| corridor_channels.sbn | application/octet-stream | 636 Bytes | polylines of subglacial meltwater landforms |
| corridor_channels.sbx | application/octet-stream | 156 Bytes | polylines of subglacial meltwater landforms |
| corridor_channels.shp | application/octet-stream | 146.4 kBytes | polylines of subglacial meltwater landforms |
| corridor_channels.shp.xml | text/plain | 14.6 kBytes | polylines of subglacial meltwater landforms |
| corridor_channels.shx | application/octet-stream | 524 Bytes | polylines of subglacial meltwater landforms |
| marginal_landforms.cpg | text/plain | 5 Bytes | polylines of ice-marginal landforms |
| marginal_landforms.dbf | text/plain | 16.8 kBytes | polylines of ice-marginal landforms |
| marginal_landforms.prj | text/plain | 409 Bytes | polylines of ice-marginal landforms |
| marginal_landforms.sbn | application/octet-stream | 6 kBytes | polylines of ice-marginal landforms |
| marginal_landforms.sbx | application/octet-stream | 556 Bytes | polylines of ice-marginal landforms |
| marginal_landforms.shp | application/octet-stream | 1000.5 kBytes | polylines of ice-marginal landforms |
| marginal_landforms.shp.xml | text/plain | 18.4 kBytes | polylines of ice-marginal landforms |
| marginal_landforms.shx | application/octet-stream | 4.6 kBytes | polylines of ice-marginal landforms |