Physiography of the Orca Seamount in the Bransfield Strait, Antarctic Peninsula
Extract from related chapter 5.5.2 in reference: The Orca Seamount was discovered in the central basin of the Bransfield Strait around the posit 62°26'S and 58°24'W on the west side of the Antarctic Peninsula, the most western area of the south polar continent. Through the discovery was ma...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.341126 2023-05-15T14:00:23+02:00 Physiography of the Orca Seamount in the Bransfield Strait, Antarctic Peninsula Hatzky, Jörn LATITUDE: -62.433333 * LONGITUDE: -58.433333 2005-12-20 application/zip, 6.8 MBytes https://doi.pangaea.de/10.1594/PANGAEA.341126 https://doi.org/10.1594/PANGAEA.341126 en eng PANGAEA Hatzky, Jörn (2005): Ampère Seamount (Sect. 5.2.6). Arctic Ocean and Its Constituent Seas; Bathymetry and Physiography (Sect. 5.4.1). The Orca Seamount Region, Antarctica (Sect. 5.5.2). In: Peter C. Wille (ed.), Sound Images of the Ocean in Research and Monitoring, Springer-Verlag Berlin Heidelberg New York, 471 pp https://doi.pangaea.de/10.1594/PANGAEA.341126 https://doi.org/10.1594/PANGAEA.341126 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven ANT-XI/3 AWI_Paleo Bransfield Strait HS HydroSweep Orca_Seamount Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS29 Dataset 2005 ftpangaea https://doi.org/10.1594/PANGAEA.341126 2023-01-20T08:06:02Z Extract from related chapter 5.5.2 in reference: The Orca Seamount was discovered in the central basin of the Bransfield Strait around the posit 62°26'S and 58°24'W on the west side of the Antarctic Peninsula, the most western area of the south polar continent. Through the discovery was made known in 1987, it was only during three bathymetric surveys with high resolution fan echosounders between 1993 and 1995 that the character and complete shape of a remarkable volcano seamount became evident. The data acquisition and processing revealed a spectacular crater of 350 m depth. The relative hight of this 3 km wide "caldera" rim is 550 m with a basal diameter of the seamount cone of 11 km. Its flanks are about 15° steep but in some places the slope reaches up to 36°. The nearly circular shape of the Orca edifice spreads outh with several pronounced spurs, trending parallel to the basin axis in a northeast-southwest direction. The Bransfield Strait is a trough-shaped basin of 400 km length and 2 km depth between the South Shetland Island Arc and the Antarctic Peninsula, formed by rifting behind the islands. The separation of the South Shetland island chain from the peninsula began possibly several million years ago. The active rifting is still going on however, and has caused recent earthquakes and volcanism along the Bransfield Strait. The Strait hosts a chain of submerged seamounts of volcanic origin with the presently inactive Ora Seamount as the most spectacular one. The South Shelfand Island owe their existence to a subduction related volcanism which is perhaps 5-10 times older than the age of Orca and the other seamounts along the central basin of the Bransfield Strait. Dataset Antarc* Antarctic Antarctic Peninsula Arctic Bransfield Strait Orca PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Antarctic Peninsula Bransfield Strait Central Basin ENVELOPE(178.000,178.000,-72.300,-72.300) Ora ENVELOPE(7.517,7.517,62.581,62.581) Orca Seamount ENVELOPE(-58.400,-58.400,-62.433,-62.433) The Antarctic ENVELOPE(-58.433333,-58.433333,-62.433333,-62.433333) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
ANT-XI/3 AWI_Paleo Bransfield Strait HS HydroSweep Orca_Seamount Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS29 |
spellingShingle |
ANT-XI/3 AWI_Paleo Bransfield Strait HS HydroSweep Orca_Seamount Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS29 Hatzky, Jörn Physiography of the Orca Seamount in the Bransfield Strait, Antarctic Peninsula |
topic_facet |
ANT-XI/3 AWI_Paleo Bransfield Strait HS HydroSweep Orca_Seamount Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS29 |
description |
Extract from related chapter 5.5.2 in reference: The Orca Seamount was discovered in the central basin of the Bransfield Strait around the posit 62°26'S and 58°24'W on the west side of the Antarctic Peninsula, the most western area of the south polar continent. Through the discovery was made known in 1987, it was only during three bathymetric surveys with high resolution fan echosounders between 1993 and 1995 that the character and complete shape of a remarkable volcano seamount became evident. The data acquisition and processing revealed a spectacular crater of 350 m depth. The relative hight of this 3 km wide "caldera" rim is 550 m with a basal diameter of the seamount cone of 11 km. Its flanks are about 15° steep but in some places the slope reaches up to 36°. The nearly circular shape of the Orca edifice spreads outh with several pronounced spurs, trending parallel to the basin axis in a northeast-southwest direction. The Bransfield Strait is a trough-shaped basin of 400 km length and 2 km depth between the South Shetland Island Arc and the Antarctic Peninsula, formed by rifting behind the islands. The separation of the South Shetland island chain from the peninsula began possibly several million years ago. The active rifting is still going on however, and has caused recent earthquakes and volcanism along the Bransfield Strait. The Strait hosts a chain of submerged seamounts of volcanic origin with the presently inactive Ora Seamount as the most spectacular one. The South Shelfand Island owe their existence to a subduction related volcanism which is perhaps 5-10 times older than the age of Orca and the other seamounts along the central basin of the Bransfield Strait. |
format |
Dataset |
author |
Hatzky, Jörn |
author_facet |
Hatzky, Jörn |
author_sort |
Hatzky, Jörn |
title |
Physiography of the Orca Seamount in the Bransfield Strait, Antarctic Peninsula |
title_short |
Physiography of the Orca Seamount in the Bransfield Strait, Antarctic Peninsula |
title_full |
Physiography of the Orca Seamount in the Bransfield Strait, Antarctic Peninsula |
title_fullStr |
Physiography of the Orca Seamount in the Bransfield Strait, Antarctic Peninsula |
title_full_unstemmed |
Physiography of the Orca Seamount in the Bransfield Strait, Antarctic Peninsula |
title_sort |
physiography of the orca seamount in the bransfield strait, antarctic peninsula |
publisher |
PANGAEA |
publishDate |
2005 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.341126 https://doi.org/10.1594/PANGAEA.341126 |
op_coverage |
LATITUDE: -62.433333 * LONGITUDE: -58.433333 |
long_lat |
ENVELOPE(178.000,178.000,-72.300,-72.300) ENVELOPE(7.517,7.517,62.581,62.581) ENVELOPE(-58.400,-58.400,-62.433,-62.433) ENVELOPE(-58.433333,-58.433333,-62.433333,-62.433333) |
geographic |
Antarctic Antarctic Peninsula Bransfield Strait Central Basin Ora Orca Seamount The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Bransfield Strait Central Basin Ora Orca Seamount The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Arctic Bransfield Strait Orca |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Arctic Bransfield Strait Orca |
op_source |
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven |
op_relation |
Hatzky, Jörn (2005): Ampère Seamount (Sect. 5.2.6). Arctic Ocean and Its Constituent Seas; Bathymetry and Physiography (Sect. 5.4.1). The Orca Seamount Region, Antarctica (Sect. 5.5.2). In: Peter C. Wille (ed.), Sound Images of the Ocean in Research and Monitoring, Springer-Verlag Berlin Heidelberg New York, 471 pp https://doi.pangaea.de/10.1594/PANGAEA.341126 https://doi.org/10.1594/PANGAEA.341126 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.341126 |
_version_ |
1766269472113426432 |