Marine reservoir corrections : St. Helena, South Atlantic Ocean
We present the first marine reservoir age and ∆R determination for the island of St. Helena using marine mollusk radiocarbon dates obtained from an historical context of known age. This represents the first marine reservoir age and ∆R determination in the southern Atlantic Ocean within thousands of...
Main Authors: | , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2008
|
Subjects: | |
Online Access: | http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:6701 http://hdl.handle.net/10962/d1006737 |
id |
ftsealsdc:vital:6701 |
---|---|
record_format |
openpolar |
spelling |
ftsealsdc:vital:6701 2024-06-09T07:49:33+00:00 Marine reservoir corrections : St. Helena, South Atlantic Ocean Lewis, Colin A Reimer, P J Reimer, R W 2008 7 pages pdf http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:6701 http://hdl.handle.net/10962/d1006737 English eng vital:6701 http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:6701 http://hdl.handle.net/10962/d1006737 Article 2008 ftsealsdc 2024-05-16T11:12:46Z We present the first marine reservoir age and ∆R determination for the island of St. Helena using marine mollusk radiocarbon dates obtained from an historical context of known age. This represents the first marine reservoir age and ∆R determination in the southern Atlantic Ocean within thousands of kilometers of the island. The depletion of 14C in the shells indicates a rather larger reservoir age for that portion of the surface Atlantic than models indicate. The implication is that upwelling old water along the Namibian coast is transported for a considerable distance, although it is likely to be variable on a decadal timescale. An artilleryman’s button, together with other artifacts found in a midden, demonstrate association of the mollusk shells with a narrow historic period of AD 1815–1835. Article in Journal/Newspaper South Atlantic Ocean SEALS Digital Commons (South East Academic Libraries System, South Africa) St. Helena ENVELOPE(8.575,8.575,63.621,63.621) |
institution |
Open Polar |
collection |
SEALS Digital Commons (South East Academic Libraries System, South Africa) |
op_collection_id |
ftsealsdc |
language |
English |
description |
We present the first marine reservoir age and ∆R determination for the island of St. Helena using marine mollusk radiocarbon dates obtained from an historical context of known age. This represents the first marine reservoir age and ∆R determination in the southern Atlantic Ocean within thousands of kilometers of the island. The depletion of 14C in the shells indicates a rather larger reservoir age for that portion of the surface Atlantic than models indicate. The implication is that upwelling old water along the Namibian coast is transported for a considerable distance, although it is likely to be variable on a decadal timescale. An artilleryman’s button, together with other artifacts found in a midden, demonstrate association of the mollusk shells with a narrow historic period of AD 1815–1835. |
format |
Article in Journal/Newspaper |
author |
Lewis, Colin A Reimer, P J Reimer, R W |
spellingShingle |
Lewis, Colin A Reimer, P J Reimer, R W Marine reservoir corrections : St. Helena, South Atlantic Ocean |
author_facet |
Lewis, Colin A Reimer, P J Reimer, R W |
author_sort |
Lewis, Colin A |
title |
Marine reservoir corrections : St. Helena, South Atlantic Ocean |
title_short |
Marine reservoir corrections : St. Helena, South Atlantic Ocean |
title_full |
Marine reservoir corrections : St. Helena, South Atlantic Ocean |
title_fullStr |
Marine reservoir corrections : St. Helena, South Atlantic Ocean |
title_full_unstemmed |
Marine reservoir corrections : St. Helena, South Atlantic Ocean |
title_sort |
marine reservoir corrections : st. helena, south atlantic ocean |
publishDate |
2008 |
url |
http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:6701 http://hdl.handle.net/10962/d1006737 |
long_lat |
ENVELOPE(8.575,8.575,63.621,63.621) |
geographic |
St. Helena |
geographic_facet |
St. Helena |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_relation |
vital:6701 http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:6701 http://hdl.handle.net/10962/d1006737 |
_version_ |
1801382233822461952 |