Spatial and Temporal Characteristics of the Little Ice Age: The Antarctic Ice Core Record
Recently, ice core records from both hemispheres, in conjunction with other proxy records (e.g., tree rings, speleothems and corals), have shown that the Little Ice Age (LIA) was spatially extensive, extending to the Antarctic. This paper examines the temporal and spatial characteristics of the dust...
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ftdtic:ADP007347 2023-05-15T13:38:48+02:00 Spatial and Temporal Characteristics of the Little Ice Age: The Antarctic Ice Core Record Mosley-Thompson, Ellen Thompson, Lonnie G. OHIO STATE UNIV COLUMBUS 1992-03 text/html http://www.dtic.mil/docs/citations/ADP007347 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADP007347 en eng http://www.dtic.mil/docs/citations/ADP007347 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Geography Snow Ice and Permafrost Meteorology *CORES *DUST *ICE *ANTARCTIC REGIONS ADDITION COOLING HEMISPHERES HIGH RESOLUTION PENINSULAS PICTURES RECORDS REGIONS RESOLUTION RINGS STATIONS TEMPERATURE TREES SYMPOSIA SURFACE TEMPERATURE Component Reports *Spatial characteristics *Temporal characteristics *Little ice age. Text 1992 ftdtic 2016-02-19T17:39:52Z Recently, ice core records from both hemispheres, in conjunction with other proxy records (e.g., tree rings, speleothems and corals), have shown that the Little Ice Age (LIA) was spatially extensive, extending to the Antarctic. This paper examines the temporal and spatial characteristics of the dust and delta 18O information from Antarctic ice cores. Substantial differences exist in the records. For example, a 550-year record of delta 18O and dust concentrations from Siple Station, Antarctica suggests that warmer, less dusty conditions prevailed from A.D. 1600 to 1830. Alternately, dust and delta 18O data from South Pole Station indicate that opposite conditions (e.g., cooler and more dusty) were prevalent during the LIA. Three additional Antarctic delta 18O records are integrated with the Siple and South Pole histories for a more comprehensive picture of LIA conditions. The records provide additional support for the LIA temperature opposition between the Antarctic Peninsula region and East Antarctica. In addition, periods of strongest LIA cooling are not temporally synchronous over East Antarctica. These strong regional differences demonstrate that a suite of spatially distributed, high resolution ice core records will be necessary to characterize the LIA in Antarctica. This article is from 'Proceedings of the International Conference on the Role of the Polar Regions in Global Change Held in Fairbanks, Alaska on 11-15 June 1990. Volume 2', AD-A253 028, p606-610. See also Volume 1, AD-A253 027. Text Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice ice core permafrost South pole South pole Alaska Defense Technical Information Center: DTIC Technical Reports database Antarctic The Antarctic Antarctic Peninsula East Antarctica Fairbanks South Pole Siple ENVELOPE(-83.917,-83.917,-75.917,-75.917) |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Geography Snow Ice and Permafrost Meteorology *CORES *DUST *ICE *ANTARCTIC REGIONS ADDITION COOLING HEMISPHERES HIGH RESOLUTION PENINSULAS PICTURES RECORDS REGIONS RESOLUTION RINGS STATIONS TEMPERATURE TREES SYMPOSIA SURFACE TEMPERATURE Component Reports *Spatial characteristics *Temporal characteristics *Little ice age. |
spellingShingle |
Geography Snow Ice and Permafrost Meteorology *CORES *DUST *ICE *ANTARCTIC REGIONS ADDITION COOLING HEMISPHERES HIGH RESOLUTION PENINSULAS PICTURES RECORDS REGIONS RESOLUTION RINGS STATIONS TEMPERATURE TREES SYMPOSIA SURFACE TEMPERATURE Component Reports *Spatial characteristics *Temporal characteristics *Little ice age. Mosley-Thompson, Ellen Thompson, Lonnie G. Spatial and Temporal Characteristics of the Little Ice Age: The Antarctic Ice Core Record |
topic_facet |
Geography Snow Ice and Permafrost Meteorology *CORES *DUST *ICE *ANTARCTIC REGIONS ADDITION COOLING HEMISPHERES HIGH RESOLUTION PENINSULAS PICTURES RECORDS REGIONS RESOLUTION RINGS STATIONS TEMPERATURE TREES SYMPOSIA SURFACE TEMPERATURE Component Reports *Spatial characteristics *Temporal characteristics *Little ice age. |
description |
Recently, ice core records from both hemispheres, in conjunction with other proxy records (e.g., tree rings, speleothems and corals), have shown that the Little Ice Age (LIA) was spatially extensive, extending to the Antarctic. This paper examines the temporal and spatial characteristics of the dust and delta 18O information from Antarctic ice cores. Substantial differences exist in the records. For example, a 550-year record of delta 18O and dust concentrations from Siple Station, Antarctica suggests that warmer, less dusty conditions prevailed from A.D. 1600 to 1830. Alternately, dust and delta 18O data from South Pole Station indicate that opposite conditions (e.g., cooler and more dusty) were prevalent during the LIA. Three additional Antarctic delta 18O records are integrated with the Siple and South Pole histories for a more comprehensive picture of LIA conditions. The records provide additional support for the LIA temperature opposition between the Antarctic Peninsula region and East Antarctica. In addition, periods of strongest LIA cooling are not temporally synchronous over East Antarctica. These strong regional differences demonstrate that a suite of spatially distributed, high resolution ice core records will be necessary to characterize the LIA in Antarctica. This article is from 'Proceedings of the International Conference on the Role of the Polar Regions in Global Change Held in Fairbanks, Alaska on 11-15 June 1990. Volume 2', AD-A253 028, p606-610. See also Volume 1, AD-A253 027. |
author2 |
OHIO STATE UNIV COLUMBUS |
format |
Text |
author |
Mosley-Thompson, Ellen Thompson, Lonnie G. |
author_facet |
Mosley-Thompson, Ellen Thompson, Lonnie G. |
author_sort |
Mosley-Thompson, Ellen |
title |
Spatial and Temporal Characteristics of the Little Ice Age: The Antarctic Ice Core Record |
title_short |
Spatial and Temporal Characteristics of the Little Ice Age: The Antarctic Ice Core Record |
title_full |
Spatial and Temporal Characteristics of the Little Ice Age: The Antarctic Ice Core Record |
title_fullStr |
Spatial and Temporal Characteristics of the Little Ice Age: The Antarctic Ice Core Record |
title_full_unstemmed |
Spatial and Temporal Characteristics of the Little Ice Age: The Antarctic Ice Core Record |
title_sort |
spatial and temporal characteristics of the little ice age: the antarctic ice core record |
publishDate |
1992 |
url |
http://www.dtic.mil/docs/citations/ADP007347 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADP007347 |
long_lat |
ENVELOPE(-83.917,-83.917,-75.917,-75.917) |
geographic |
Antarctic The Antarctic Antarctic Peninsula East Antarctica Fairbanks South Pole Siple |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula East Antarctica Fairbanks South Pole Siple |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice ice core permafrost South pole South pole Alaska |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice ice core permafrost South pole South pole Alaska |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADP007347 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766111271145439232 |