Iceberg A74: Seafloor circumnavigation images collected during COSMUS expedition PS124
During the RV POLARSTERN expedition PS124 to the Weddell Sea during Jan - April 2021 the Ocean Floor Observation and Bathymetry System (OFOBS) was used to collect still and video images, as well as sidescan data, from various locations surveyed during the research cruise. During the expedition, the...
Main Authors: | , , , , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2023
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.936223 https://doi.org/10.1594/PANGAEA.936223 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.936223 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.936223 2024-05-19T07:29:26+00:00 Iceberg A74: Seafloor circumnavigation images collected during COSMUS expedition PS124 Purser, Autun Boehringer, Lilian Werner, Ellen Holtappels, Moritz Hellmer, Hartmut H Wenzhöfer, Frank MEDIAN LATITUDE: -75.153737 * MEDIAN LONGITUDE: -24.705537 * SOUTH-BOUND LATITUDE: -75.172292 * WEST-BOUND LONGITUDE: -26.853229 * NORTH-BOUND LATITUDE: -75.038954 * EAST-BOUND LONGITUDE: -24.620994 * DATE/TIME START: 2021-03-14T10:02:04 * DATE/TIME END: 2021-03-14T14:45:21 * MINIMUM DEPTH, water: 11 m * MAXIMUM DEPTH, water: 672 m 2023 text/tab-separated-values, 982 data points https://doi.pangaea.de/10.1594/PANGAEA.936223 https://doi.org/10.1594/PANGAEA.936223 en eng PANGAEA Hellmer, Hartmut H; Holtappels, Moritz (2021): The Expedition PS124 of the Research Vessel POLARSTERN to the southern Weddell Sea in 2021. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 755, 237 pp, https://doi.org/10.48433/BzPM_0755_2021 https://doi.pangaea.de/10.1594/PANGAEA.936223 https://doi.org/10.1594/PANGAEA.936223 UNKNOWN: Licensing unknown: Please contact principal investigator/authors to gain access and request licensing terms Access constraints: access rights needed info:eu-repo/semantics/restrictedAccess A74 iceberg calving front DATE/TIME DEPTH water global warming GPF 19-2_039 COSMUS icebergs ice covered seafloor community Image LATITUDE LONGITUDE Ocean Floor Observation and Bathymetry System OFOBS Polarstern PS124 PS124_111-8 Weddell Sea Dataset 2023 ftpangaea https://doi.org/10.1594/PANGAEA.93622310.48433/BzPM_0755_2021 2024-04-23T23:36:33Z During the RV POLARSTERN expedition PS124 to the Weddell Sea during Jan - April 2021 the Ocean Floor Observation and Bathymetry System (OFOBS) was used to collect still and video images, as well as sidescan data, from various locations surveyed during the research cruise. During the expedition, the giant iceberg A74 calved off from the Antarctic mainland. In this data set we present images taken from within the water column and the seafloor during part of the iceberg circumnavigation conducted by FS POLARSTERN on the 14th of March, 2021. The OFOBS system consisted of a towed underwater camera system equipped with both a high-resolution photo-camera (iSiTEC, CANON EOS 5D Mark III) and a high-definition video-camera (iSiTEC, Sony FCB-H11) as well as an integrated sidescan sonar system. The cameras were mounted on a steel frame (140L x 92W x 135H cm), together with two strobe lights (iSiTEC UW-Blitz 250, TTL driven), three laser pointers spaced with a distance of 50 cm used to estimate the size of seafloor structures, four LED lights, and a USBL positioning system (Posidonia) to track the position of the OFOBS during deployments, with additional positioning information provided by the integrated INS and DVL systems. In automatic mode, a seabed photo, depicting an area of approximately 4-10 m**2, with variations depending on the actual height above ground, was taken every ~15 seconds to obtain series of TIMER stills distributed at regular distances along each of the survey profiles. Profile lengths varied in length depending on duration of the cast. At a ship speed of 0.5 kn, the average distance between seabed images was approximately 5 m, with this spacing being 15 m at 1.5 kt speed. Additional HOTKEY photos were taken from interesting objects (organisms, seabed features, etc) when they appeared in the live video feed. One minute POSIDONIA position fixes were used in this current data set, so there is some offset of a few 10s of meters for some of the collected images. Dataset Antarc* Antarctic Berichte zur Polar- und Meeresforschung Iceberg* Reports on Polar and Marine Research Weddell Sea PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-26.853229,-24.620994,-75.038954,-75.172292) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
A74 iceberg calving front DATE/TIME DEPTH water global warming GPF 19-2_039 COSMUS icebergs ice covered seafloor community Image LATITUDE LONGITUDE Ocean Floor Observation and Bathymetry System OFOBS Polarstern PS124 PS124_111-8 Weddell Sea |
spellingShingle |
A74 iceberg calving front DATE/TIME DEPTH water global warming GPF 19-2_039 COSMUS icebergs ice covered seafloor community Image LATITUDE LONGITUDE Ocean Floor Observation and Bathymetry System OFOBS Polarstern PS124 PS124_111-8 Weddell Sea Purser, Autun Boehringer, Lilian Werner, Ellen Holtappels, Moritz Hellmer, Hartmut H Wenzhöfer, Frank Iceberg A74: Seafloor circumnavigation images collected during COSMUS expedition PS124 |
topic_facet |
A74 iceberg calving front DATE/TIME DEPTH water global warming GPF 19-2_039 COSMUS icebergs ice covered seafloor community Image LATITUDE LONGITUDE Ocean Floor Observation and Bathymetry System OFOBS Polarstern PS124 PS124_111-8 Weddell Sea |
description |
During the RV POLARSTERN expedition PS124 to the Weddell Sea during Jan - April 2021 the Ocean Floor Observation and Bathymetry System (OFOBS) was used to collect still and video images, as well as sidescan data, from various locations surveyed during the research cruise. During the expedition, the giant iceberg A74 calved off from the Antarctic mainland. In this data set we present images taken from within the water column and the seafloor during part of the iceberg circumnavigation conducted by FS POLARSTERN on the 14th of March, 2021. The OFOBS system consisted of a towed underwater camera system equipped with both a high-resolution photo-camera (iSiTEC, CANON EOS 5D Mark III) and a high-definition video-camera (iSiTEC, Sony FCB-H11) as well as an integrated sidescan sonar system. The cameras were mounted on a steel frame (140L x 92W x 135H cm), together with two strobe lights (iSiTEC UW-Blitz 250, TTL driven), three laser pointers spaced with a distance of 50 cm used to estimate the size of seafloor structures, four LED lights, and a USBL positioning system (Posidonia) to track the position of the OFOBS during deployments, with additional positioning information provided by the integrated INS and DVL systems. In automatic mode, a seabed photo, depicting an area of approximately 4-10 m**2, with variations depending on the actual height above ground, was taken every ~15 seconds to obtain series of TIMER stills distributed at regular distances along each of the survey profiles. Profile lengths varied in length depending on duration of the cast. At a ship speed of 0.5 kn, the average distance between seabed images was approximately 5 m, with this spacing being 15 m at 1.5 kt speed. Additional HOTKEY photos were taken from interesting objects (organisms, seabed features, etc) when they appeared in the live video feed. One minute POSIDONIA position fixes were used in this current data set, so there is some offset of a few 10s of meters for some of the collected images. |
format |
Dataset |
author |
Purser, Autun Boehringer, Lilian Werner, Ellen Holtappels, Moritz Hellmer, Hartmut H Wenzhöfer, Frank |
author_facet |
Purser, Autun Boehringer, Lilian Werner, Ellen Holtappels, Moritz Hellmer, Hartmut H Wenzhöfer, Frank |
author_sort |
Purser, Autun |
title |
Iceberg A74: Seafloor circumnavigation images collected during COSMUS expedition PS124 |
title_short |
Iceberg A74: Seafloor circumnavigation images collected during COSMUS expedition PS124 |
title_full |
Iceberg A74: Seafloor circumnavigation images collected during COSMUS expedition PS124 |
title_fullStr |
Iceberg A74: Seafloor circumnavigation images collected during COSMUS expedition PS124 |
title_full_unstemmed |
Iceberg A74: Seafloor circumnavigation images collected during COSMUS expedition PS124 |
title_sort |
iceberg a74: seafloor circumnavigation images collected during cosmus expedition ps124 |
publisher |
PANGAEA |
publishDate |
2023 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.936223 https://doi.org/10.1594/PANGAEA.936223 |
op_coverage |
MEDIAN LATITUDE: -75.153737 * MEDIAN LONGITUDE: -24.705537 * SOUTH-BOUND LATITUDE: -75.172292 * WEST-BOUND LONGITUDE: -26.853229 * NORTH-BOUND LATITUDE: -75.038954 * EAST-BOUND LONGITUDE: -24.620994 * DATE/TIME START: 2021-03-14T10:02:04 * DATE/TIME END: 2021-03-14T14:45:21 * MINIMUM DEPTH, water: 11 m * MAXIMUM DEPTH, water: 672 m |
long_lat |
ENVELOPE(-26.853229,-24.620994,-75.038954,-75.172292) |
genre |
Antarc* Antarctic Berichte zur Polar- und Meeresforschung Iceberg* Reports on Polar and Marine Research Weddell Sea |
genre_facet |
Antarc* Antarctic Berichte zur Polar- und Meeresforschung Iceberg* Reports on Polar and Marine Research Weddell Sea |
op_relation |
Hellmer, Hartmut H; Holtappels, Moritz (2021): The Expedition PS124 of the Research Vessel POLARSTERN to the southern Weddell Sea in 2021. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 755, 237 pp, https://doi.org/10.48433/BzPM_0755_2021 https://doi.pangaea.de/10.1594/PANGAEA.936223 https://doi.org/10.1594/PANGAEA.936223 |
op_rights |
UNKNOWN: Licensing unknown: Please contact principal investigator/authors to gain access and request licensing terms Access constraints: access rights needed info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.93622310.48433/BzPM_0755_2021 |
_version_ |
1799479282559352832 |