The Chemical and Structural Properties of Sea Ice in the Southern Beaufort Sea
This study provides a detailed chemical and structural profile of first-year and multiyear Arctic sea ice. Ice cores were collected during April- May 1986 and 1987 near Prudhoe Bay, Alaska. Concentrations of Cl, Br, SO4, Na, Ca, K, Mg, PO4, SiO4, NO3, NO2 and NH4 were determined for samples chosen o...
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ftdtic:ADA219746 2023-05-15T15:10:11+02:00 The Chemical and Structural Properties of Sea Ice in the Southern Beaufort Sea Meese, Debra A. COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH 1989-12 text/html http://www.dtic.mil/docs/citations/ADA219746 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA219746 en eng http://www.dtic.mil/docs/citations/ADA219746 Approved for public release; distribution is unlimited. DTIC AND NTIS Inorganic Chemistry Physical and Dynamic Oceanography Snow Ice and Permafrost *SEA ICE *CHEMICAL ANALYSIS MAGNESIUM RATIOS TEMPERATURE CORES BIOLOGY CHEMICAL PROPERTIES CHEMICALS STRUCTURAL PROPERTIES ALASKA IMPURITIES NUTRIENTS CHEMISTRY DRAINAGE PROFILES CONCENTRATION(COMPOSITION) STATISTICAL ANALYSIS CHEMICAL PRECIPITATION SALINITY SEA WATER INDICATORS SOUTH(DIRECTION) ENRICHMENT POTASSIUM BRINES FINE GRAINED MATERIALS BEAUFORT SEA DEPLETION IONS *ICE CHEMISTRY CONSERVATIVE ELEMENTS NUTRIENT CONCENTRATIONS AST24 PE61102A WU006 Text 1989 ftdtic 2016-02-23T02:22:21Z This study provides a detailed chemical and structural profile of first-year and multiyear Arctic sea ice. Ice cores were collected during April- May 1986 and 1987 near Prudhoe Bay, Alaska. Concentrations of Cl, Br, SO4, Na, Ca, K, Mg, PO4, SiO4, NO3, NO2 and NH4 were determined for samples chosen on the basis of structural ice type. Chemical and statistical analyses indicate that finer-grained structures incorporate more impurities and that major ion chemistry is controlled almost entirely by salinity. Mg is enriched in the ice indicating precipitation is occurring at temperatures higher than previously reported. K is depleted in the ice suggesting preferrential drainage. Ratios of the major ions are the same for first-year and multiyear ice and are similar to that of seawater indicating that as the ice ages no significant changes occur in ice chemistry. Nutrient concentrations in the ice are enriched with respect to the underlying water, indicating that biological activity occurs in the ice and processes other than the overall salinity effect and brine drainage are affecting nutrient concentrations within the ice. (edc) Text Arctic Beaufort Sea Ice permafrost Prudhoe Bay Sea ice Alaska Defense Technical Information Center: DTIC Technical Reports database Arctic |
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Open Polar |
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Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Inorganic Chemistry Physical and Dynamic Oceanography Snow Ice and Permafrost *SEA ICE *CHEMICAL ANALYSIS MAGNESIUM RATIOS TEMPERATURE CORES BIOLOGY CHEMICAL PROPERTIES CHEMICALS STRUCTURAL PROPERTIES ALASKA IMPURITIES NUTRIENTS CHEMISTRY DRAINAGE PROFILES CONCENTRATION(COMPOSITION) STATISTICAL ANALYSIS CHEMICAL PRECIPITATION SALINITY SEA WATER INDICATORS SOUTH(DIRECTION) ENRICHMENT POTASSIUM BRINES FINE GRAINED MATERIALS BEAUFORT SEA DEPLETION IONS *ICE CHEMISTRY CONSERVATIVE ELEMENTS NUTRIENT CONCENTRATIONS AST24 PE61102A WU006 |
spellingShingle |
Inorganic Chemistry Physical and Dynamic Oceanography Snow Ice and Permafrost *SEA ICE *CHEMICAL ANALYSIS MAGNESIUM RATIOS TEMPERATURE CORES BIOLOGY CHEMICAL PROPERTIES CHEMICALS STRUCTURAL PROPERTIES ALASKA IMPURITIES NUTRIENTS CHEMISTRY DRAINAGE PROFILES CONCENTRATION(COMPOSITION) STATISTICAL ANALYSIS CHEMICAL PRECIPITATION SALINITY SEA WATER INDICATORS SOUTH(DIRECTION) ENRICHMENT POTASSIUM BRINES FINE GRAINED MATERIALS BEAUFORT SEA DEPLETION IONS *ICE CHEMISTRY CONSERVATIVE ELEMENTS NUTRIENT CONCENTRATIONS AST24 PE61102A WU006 Meese, Debra A. The Chemical and Structural Properties of Sea Ice in the Southern Beaufort Sea |
topic_facet |
Inorganic Chemistry Physical and Dynamic Oceanography Snow Ice and Permafrost *SEA ICE *CHEMICAL ANALYSIS MAGNESIUM RATIOS TEMPERATURE CORES BIOLOGY CHEMICAL PROPERTIES CHEMICALS STRUCTURAL PROPERTIES ALASKA IMPURITIES NUTRIENTS CHEMISTRY DRAINAGE PROFILES CONCENTRATION(COMPOSITION) STATISTICAL ANALYSIS CHEMICAL PRECIPITATION SALINITY SEA WATER INDICATORS SOUTH(DIRECTION) ENRICHMENT POTASSIUM BRINES FINE GRAINED MATERIALS BEAUFORT SEA DEPLETION IONS *ICE CHEMISTRY CONSERVATIVE ELEMENTS NUTRIENT CONCENTRATIONS AST24 PE61102A WU006 |
description |
This study provides a detailed chemical and structural profile of first-year and multiyear Arctic sea ice. Ice cores were collected during April- May 1986 and 1987 near Prudhoe Bay, Alaska. Concentrations of Cl, Br, SO4, Na, Ca, K, Mg, PO4, SiO4, NO3, NO2 and NH4 were determined for samples chosen on the basis of structural ice type. Chemical and statistical analyses indicate that finer-grained structures incorporate more impurities and that major ion chemistry is controlled almost entirely by salinity. Mg is enriched in the ice indicating precipitation is occurring at temperatures higher than previously reported. K is depleted in the ice suggesting preferrential drainage. Ratios of the major ions are the same for first-year and multiyear ice and are similar to that of seawater indicating that as the ice ages no significant changes occur in ice chemistry. Nutrient concentrations in the ice are enriched with respect to the underlying water, indicating that biological activity occurs in the ice and processes other than the overall salinity effect and brine drainage are affecting nutrient concentrations within the ice. (edc) |
author2 |
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH |
format |
Text |
author |
Meese, Debra A. |
author_facet |
Meese, Debra A. |
author_sort |
Meese, Debra A. |
title |
The Chemical and Structural Properties of Sea Ice in the Southern Beaufort Sea |
title_short |
The Chemical and Structural Properties of Sea Ice in the Southern Beaufort Sea |
title_full |
The Chemical and Structural Properties of Sea Ice in the Southern Beaufort Sea |
title_fullStr |
The Chemical and Structural Properties of Sea Ice in the Southern Beaufort Sea |
title_full_unstemmed |
The Chemical and Structural Properties of Sea Ice in the Southern Beaufort Sea |
title_sort |
chemical and structural properties of sea ice in the southern beaufort sea |
publishDate |
1989 |
url |
http://www.dtic.mil/docs/citations/ADA219746 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA219746 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Beaufort Sea Ice permafrost Prudhoe Bay Sea ice Alaska |
genre_facet |
Arctic Beaufort Sea Ice permafrost Prudhoe Bay Sea ice Alaska |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA219746 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766341227304714240 |