Full Record - Seafloor bathymetry of Sheldon Cove, Börgen Bay and Marian Cove, merged and gridded from EM122 multibeam echosounder data collected for the project NE/P003087/1 (2017-2020)

Seafloor bathymetry of Sheldon Cove, Börgen Bay and Marian Cove, merged and gridded from EM122 multibeam echosounder data collected for the project NE/P003087/1 (2017-2020)

GB/NERC/BAS/PDC/01511

Abstract:
We present three new gridded bathymetric compilations of Sheldon Cove, Borgen Bay and Marian Cove.
These bathymetry grids were compiled from EM122 multibeam swath bathymetry data acquired during three different cruises (RRS James Clark Ross JR17001, JR18003 and JR19002 cruises also known as NERC- ICEBERGS cruises) from 2017 to 2020. The data is available as grids of 5 m resolution in NetCDF and GeoTIFF formats using geographic coordinates on the WGS84 datum.

This grid was compiled as part of the ICEBERGS (Impacts of deglaciation on bentic marine ecosystems in Antarctica) project.

Funding was provided by the NERC grant NE/P003087/1.

Citation:
Retallick, K., Van Landeghem, K., Fremand, A., Howard, F., Sands, C., Roman-Gonzalez, A., Barnes, D., Jenkins, S., Munoz-Ramirez, C., & Scourse, J. (2021). Seafloor bathymetry of Sheldon Cove, Börgen Bay and Marian Cove, merged and gridded from EM122 multibeam echosounder data collected for the project NE/P003087/1 (2017-2020) (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/1b4ab7bc-4272-4b16-a642-565e40544b0a

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https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=1b4ab7bc-4272-4b16-a642-565e40544b0a

REFERENCE MATERIALS

License

Use:	This data is covered by a UK Open Government Licence (http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/) Further by downloading this data the user acknowledges that they agree with the NERC data policy (http://www.nerc.ac.uk/research/sites/data/policy.asp), and the following conditions: 1. To cite the data as follows: Retallick, K., Van Landeghem, K., Fremand, A., Howard, F., Sands, C., Roman-Gonzalez, A., Barnes, D., Jenkins, S., Munoz-Ramirez, C., & Scourse, J. (2021). Seafloor bathymetry of Sheldon Cove, Börgen Bay and Marian Cove, merged and gridded from EM122 multibeam echosounder data collected for the project NE/P003087/1 (2017-2020)(Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/1B4AB7BC-4272-4B16-A642-565E40544B0A 2. The user recognizes the limitations of data and will not use this data for navigation purposes. Use of the data is at the users' own risk, and there is no warranty as to the quality or accuracy of any data, or the fitness of the data for your intended use. The data are not necessarily fully quality assured and cannot be expected to be free from measurement uncertainty, systematic biases, or errors of interpretation or analysis, and may include inaccuracies in error margins quoted with the data.

Use:

This data is covered by a UK Open Government Licence (http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/)
Further by downloading this data the user acknowledges that they agree with the NERC data policy (http://www.nerc.ac.uk/research/sites/data/policy.asp), and the following conditions:
1. To cite the data as follows:
Retallick, K., Van Landeghem, K., Fremand, A., Howard, F., Sands, C., Roman-Gonzalez, A., Barnes, D., Jenkins, S., Munoz-Ramirez, C., & Scourse, J. (2021). Seafloor bathymetry of Sheldon Cove, Börgen Bay and Marian Cove, merged and gridded from EM122 multibeam echosounder data collected for the project NE/P003087/1 (2017-2020)(Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/1B4AB7BC-4272-4B16-A642-565E40544B0A

2. The user recognizes the limitations of data and will not use this data for navigation purposes. Use of the data is at the users' own risk, and there is no warranty as to the quality or accuracy of any data, or the fitness of the data for your intended use. The data are not necessarily fully quality assured and cannot be expected to be free from measurement uncertainty, systematic biases, or errors of interpretation or analysis, and may include inaccuracies in error margins quoted with the data.

Authors

Name	UK Polar Data Centre
Role(s)	Metadata Author
Organisation	British Antarctic Survey

Name	Ms Kate Retallick
Role(s)	Investigator
Organisation	Bangor University

Name	Dr Katrien Van Landeghem
Role(s)	Investigator
Organisation	Bangor University

Name	Ms Alice C Fremand
Role(s)	Investigator
Organisation	British Antarctic Survey

Name	Mr Floyd Howard
Role(s)	Investigator
Organisation	British Antarctic Survey

Name	Dr Chester J Sands
Role(s)	Investigator
Organisation	British Antarctic Survey

Name	Dr Alejandro Roman-Gonzalez
Role(s)	Investigator
Organisation	Exeter University

Name	Dr David Barnes
Role(s)	Investigator
Organisation	British Antarctic Survey

Name	Prof Stuart Jenkins
Role(s)	Investigator
Organisation	Bangor University

Name	Dr Carlos Munoz-Ramirez
Role(s)	Investigator
Organisation	Instituto de Entomologia

Name	Prof James Scourse
Role(s)	Investigator
Organisation	Exeter University

Basic Information

Creation Date:	2021-06-15
Dataset Progress:	Complete
Dataset Language:	English
ISO Topic Categories:	Elevation Geoscientific Information
Parameters:	Oceans > Bathymetry/Seafloor Topography Oceans > Bathymetry/Seafloor Topography > Bathymetry

Additional Information

Quality:	Data processing was performed in QPS Qimera software using observed tide from local tide stations. Gross errors were removed manually prior to each dataset being processed individually using filters and additional manual editing in problem areas. Total Propagated Uncertainty and data density were checked prior to merging successive years into the final product. Depths relate to mean depth of all surveys and refer to chart datum at each respective tide gauge. Data is NOT TO BE USED FOR NAVIGATION.
Lineage/Methodology:	Bathymetric data was collected using a hull-mounted 1° x 1° EM122 Multibeam Echo Sounder (MBES). The EM122 equipment was operated using Kongsberg Seafloor Information System (SIS) and Helmsman software. Where possible, data were collected in a systematic manner with survey lines running parallel along depth contours to achieve consistent swath coverage and maximise insonification of slope areas. Sound velocity profiles (SVPs) were generated from CTD casts and applied during data acquisition. Additional information about the data acquisition can be found in the cruise reports. The data processing was performed using the QPS Qimera software. Tide gauges used: Station\| IOC ID \|Type \|Logging Interval Roth (Sheldon Cove) \| ID: 342 \|Radar \|1 min Vern (Börgen Bay)\| ID: 188 \| Pressure\|1 min Prat3 (Marian Cove) \| ID: 189 \| Pressure / Radar\| 1 min Tide gauge data: http://www.ioc-sealevelmonitoring.org/ Coordinates are in WGS84 UTM projected coordinates: Sheldon Cove:19 S Börgen Bay:20 S Marian Cove:21 S

Extent

Temporal Coverage:
Start Date	2017-11-21
End Date	2020-02-04

Spatial Coverage:
Latitude
Southernmost	-67.69389
Northernmost	-67.51004
Longitude
Westernmost	-68.39904
Easternmost	-67.87423
Altitude
Min Altitude	N/A
Max Altitude	N/A
Depth
Min Depth	N/A
Max Depth	N/A

Latitude
Southernmost	-62.24749
Northernmost	-62.19599
Longitude
Westernmost	-58.8867
Easternmost	-58.71984
Altitude
Min Altitude	N/A
Max Altitude	N/A
Depth
Min Depth	N/A
Max Depth	N/A

Latitude
Southernmost	-64.81654
Northernmost	-64.69871
Longitude
Westernmost	-63.58329
Easternmost	-63.36707
Altitude
Min Altitude	N/A
Max Altitude	N/A
Depth
Min Depth	N/A
Max Depth	N/A

Data Resolution:
Latitude Resolution	N/A
Longitude Resolution	N/A
Horizontal Resolution Range	1 meter - < 30 meters
Vertical Resolution	N/A
Vertical Resolution Range	N/A
Temporal Resolution	N/A
Temporal Resolution Range	N/A

Location:
Location	Antarctica
Detailed Location	Sheldon Cove
Location	Antarctica
Detailed Location	Marian Cove
Location	Antarctica
Detailed Location	Borgen Bay

Instrumentation

Sensor(s):	MBES > Multibeam Mapping System
Source(s):	SHIPS
Data Collection:	Data were collected as part of the following RRS James Clark Ross cruises: - JR17001 in 2017 - JR18003 in 2018 - JR19002 in 2020

Storage

Distribution:
Distribution Media	Online Internet (HTTP)
Distribution Size	30 MB
Distribution Format	TIFF
Fees	N/A

Distribution Media	Online Internet (HTTP)
Distribution Size	100 MB
Distribution Format	netCDF
Fees	N/A

Data Storage:	This data set contains: - Borgen Bay data as GeoTIFF (ICEBERGS_BB_Merged_5m.zip ~9 MB) and NetCDF (ICEBERGS_BB_Merged_5m_Raster.nc ~21 MB) - Marian Cove data as GeoTIFF (ICEBERGS_MC_Merged_5m.zip ~2MB) and NetCDF (ICEBERGS_MC_Merged_5m_Raster.nc ~8 MB) - Shelcon Cove data as GeoTIFF (ICEBERGS_SC_Merged_5m.zip ~17 MB) and NetCDF (ICEBERGS_SC_Merged_5m_Raster.nc ~71MB)