HEAT OF FREEZING AND MELTING OF SEA ICE.
Computations are presented which show that the latent heat of freezing ice in equilibrium with sea water is less than that associated with freezing pure water at 0C. The difference is due primarily to a temperature effect that is opposed to some extent by the effect of dissolved substances in the br...
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ftdtic:AD0640151 2023-05-15T16:37:08+02:00 HEAT OF FREEZING AND MELTING OF SEA ICE. Anderson,Duwayne COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H 1966-07 text/html http://www.dtic.mil/docs/citations/AD0640151 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0640151 en eng http://www.dtic.mil/docs/citations/AD0640151 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Snow Ice and Permafrost Thermodynamics (*SEA WATER FREEZING) (*ICE THERMAL PROPERTIES) MELTING SALINITY TRANSITION TEMPERATURE SPECIFIC HEAT Text 1966 ftdtic 2016-02-18T19:30:55Z Computations are presented which show that the latent heat of freezing ice in equilibrium with sea water is less than that associated with freezing pure water at 0C. The difference is due primarily to a temperature effect that is opposed to some extent by the effect of dissolved substances in the brine. The difference probably amounts to about 7 cal/gm of ice for a brine of about 150 o/oo slinity, freezing at -8C. When the effect of this difference in the total heat required to raise the temperature and melt sea ice is computed by Schwerdtfeger's method, it is found to be of the order of 0.5 cal/gm of sea ice for an overall ice salinity of 8 o/oo and an initial temperature of -8C. The differences are small but significant and until true values are established, published values of heats of freezing and melting and specific heats of sea ice should be used with discretion. (Author) Text Ice permafrost Sea ice Defense Technical Information Center: DTIC Technical Reports database |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Snow Ice and Permafrost Thermodynamics (*SEA WATER FREEZING) (*ICE THERMAL PROPERTIES) MELTING SALINITY TRANSITION TEMPERATURE SPECIFIC HEAT |
spellingShingle |
Snow Ice and Permafrost Thermodynamics (*SEA WATER FREEZING) (*ICE THERMAL PROPERTIES) MELTING SALINITY TRANSITION TEMPERATURE SPECIFIC HEAT Anderson,Duwayne HEAT OF FREEZING AND MELTING OF SEA ICE. |
topic_facet |
Snow Ice and Permafrost Thermodynamics (*SEA WATER FREEZING) (*ICE THERMAL PROPERTIES) MELTING SALINITY TRANSITION TEMPERATURE SPECIFIC HEAT |
description |
Computations are presented which show that the latent heat of freezing ice in equilibrium with sea water is less than that associated with freezing pure water at 0C. The difference is due primarily to a temperature effect that is opposed to some extent by the effect of dissolved substances in the brine. The difference probably amounts to about 7 cal/gm of ice for a brine of about 150 o/oo slinity, freezing at -8C. When the effect of this difference in the total heat required to raise the temperature and melt sea ice is computed by Schwerdtfeger's method, it is found to be of the order of 0.5 cal/gm of sea ice for an overall ice salinity of 8 o/oo and an initial temperature of -8C. The differences are small but significant and until true values are established, published values of heats of freezing and melting and specific heats of sea ice should be used with discretion. (Author) |
author2 |
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H |
format |
Text |
author |
Anderson,Duwayne |
author_facet |
Anderson,Duwayne |
author_sort |
Anderson,Duwayne |
title |
HEAT OF FREEZING AND MELTING OF SEA ICE. |
title_short |
HEAT OF FREEZING AND MELTING OF SEA ICE. |
title_full |
HEAT OF FREEZING AND MELTING OF SEA ICE. |
title_fullStr |
HEAT OF FREEZING AND MELTING OF SEA ICE. |
title_full_unstemmed |
HEAT OF FREEZING AND MELTING OF SEA ICE. |
title_sort |
heat of freezing and melting of sea ice. |
publishDate |
1966 |
url |
http://www.dtic.mil/docs/citations/AD0640151 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0640151 |
genre |
Ice permafrost Sea ice |
genre_facet |
Ice permafrost Sea ice |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/AD0640151 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766027439728754688 |