Microstructural Alteration of Hydrocarbon Contaminated Permafrost Affected Soils at the Caribou - Poker Creeks CREEL Research Watershed: Implications for Subsurface Transport
The thermodynamic conditions within the seasonally frozen active layer overlying permafrost in the Caribou-Poker Creeks Research Watershed in Alaska are such that there is continuing translocation of water and ice, and the displacement of soil particles. The introduction of immiscible hydrocarbon co...
Main Authors: | , , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Published: |
2000
|
Subjects: | |
Online Access: | http://www.dtic.mil/docs/citations/ADA378625 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA378625 |
id |
ftdtic:ADA378625 |
---|---|
record_format |
openpolar |
spelling |
ftdtic:ADA378625 2023-05-15T15:53:35+02:00 Microstructural Alteration of Hydrocarbon Contaminated Permafrost Affected Soils at the Caribou - Poker Creeks CREEL Research Watershed: Implications for Subsurface Transport White, Thomas L. Williams, P. J. Rees, W. G. Marchand, Yvette SCOTT POLAR RESEARCH INST CAMBRIDGE (UNITED KINGDOM) 2000-04-28 text/html http://www.dtic.mil/docs/citations/ADA378625 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA378625 en eng http://www.dtic.mil/docs/citations/ADA378625 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Snow Ice and Permafrost Solid Wastes Pollution and Control *MICROSTRUCTURE *HYDROCARBONS *CONTAMINATION *PERMAFROST EXPERIMENTAL DATA LAYERS THERMODYNAMICS ALASKA POROSITY CLAY MINERALS SITE INVESTIGATIONS REMOTE DETECTION CONCENTRATION(CHEMISTRY) OIL SPILLS SILT SATELLITE IMAGERY UNITED KINGDOM FOREIGN REPORTS Text 2000 ftdtic 2016-02-20T05:22:27Z The thermodynamic conditions within the seasonally frozen active layer overlying permafrost in the Caribou-Poker Creeks Research Watershed in Alaska are such that there is continuing translocation of water and ice, and the displacement of soil particles. The introduction of immiscible hydrocarbon compounds from two large scale winter and summer experimental crude oil spills into this dynamic porous medium results in microstructural changes that take place as a function of cryogenic process and contaminant concentration. Optical and scanning electron microscope observations reveal evidence of changes in soil morphology. Reorganisation of silt and clay size minerals and organic particles has resulted in changes in aggregation and interaggregate porosity in the histic pergelic cryaquest. The degree of interaggregate porosity increases as a function of hydrocarbon concentration, specifically volatiles and as a function of the soil profile. Hydrocarbon concentrations were observed to decrease as a function of depth in the O1, A1 and C1 horizons for all the sites, including the selected control site situated between the winter and summer experimental oil spills. The modifications of the microstructure change macroscopic properties (thermal, hydraulic, and mechanical), and this leads to modifications in terrain which become more marked over years. Remote sensing techniques will be important in the prediction and verification of contaminant movement. Text Caribou-Poker Creeks Research Watershed Ice permafrost Alaska 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 Solid Wastes Pollution and Control *MICROSTRUCTURE *HYDROCARBONS *CONTAMINATION *PERMAFROST EXPERIMENTAL DATA LAYERS THERMODYNAMICS ALASKA POROSITY CLAY MINERALS SITE INVESTIGATIONS REMOTE DETECTION CONCENTRATION(CHEMISTRY) OIL SPILLS SILT SATELLITE IMAGERY UNITED KINGDOM FOREIGN REPORTS |
spellingShingle |
Snow Ice and Permafrost Solid Wastes Pollution and Control *MICROSTRUCTURE *HYDROCARBONS *CONTAMINATION *PERMAFROST EXPERIMENTAL DATA LAYERS THERMODYNAMICS ALASKA POROSITY CLAY MINERALS SITE INVESTIGATIONS REMOTE DETECTION CONCENTRATION(CHEMISTRY) OIL SPILLS SILT SATELLITE IMAGERY UNITED KINGDOM FOREIGN REPORTS White, Thomas L. Williams, P. J. Rees, W. G. Marchand, Yvette Microstructural Alteration of Hydrocarbon Contaminated Permafrost Affected Soils at the Caribou - Poker Creeks CREEL Research Watershed: Implications for Subsurface Transport |
topic_facet |
Snow Ice and Permafrost Solid Wastes Pollution and Control *MICROSTRUCTURE *HYDROCARBONS *CONTAMINATION *PERMAFROST EXPERIMENTAL DATA LAYERS THERMODYNAMICS ALASKA POROSITY CLAY MINERALS SITE INVESTIGATIONS REMOTE DETECTION CONCENTRATION(CHEMISTRY) OIL SPILLS SILT SATELLITE IMAGERY UNITED KINGDOM FOREIGN REPORTS |
description |
The thermodynamic conditions within the seasonally frozen active layer overlying permafrost in the Caribou-Poker Creeks Research Watershed in Alaska are such that there is continuing translocation of water and ice, and the displacement of soil particles. The introduction of immiscible hydrocarbon compounds from two large scale winter and summer experimental crude oil spills into this dynamic porous medium results in microstructural changes that take place as a function of cryogenic process and contaminant concentration. Optical and scanning electron microscope observations reveal evidence of changes in soil morphology. Reorganisation of silt and clay size minerals and organic particles has resulted in changes in aggregation and interaggregate porosity in the histic pergelic cryaquest. The degree of interaggregate porosity increases as a function of hydrocarbon concentration, specifically volatiles and as a function of the soil profile. Hydrocarbon concentrations were observed to decrease as a function of depth in the O1, A1 and C1 horizons for all the sites, including the selected control site situated between the winter and summer experimental oil spills. The modifications of the microstructure change macroscopic properties (thermal, hydraulic, and mechanical), and this leads to modifications in terrain which become more marked over years. Remote sensing techniques will be important in the prediction and verification of contaminant movement. |
author2 |
SCOTT POLAR RESEARCH INST CAMBRIDGE (UNITED KINGDOM) |
format |
Text |
author |
White, Thomas L. Williams, P. J. Rees, W. G. Marchand, Yvette |
author_facet |
White, Thomas L. Williams, P. J. Rees, W. G. Marchand, Yvette |
author_sort |
White, Thomas L. |
title |
Microstructural Alteration of Hydrocarbon Contaminated Permafrost Affected Soils at the Caribou - Poker Creeks CREEL Research Watershed: Implications for Subsurface Transport |
title_short |
Microstructural Alteration of Hydrocarbon Contaminated Permafrost Affected Soils at the Caribou - Poker Creeks CREEL Research Watershed: Implications for Subsurface Transport |
title_full |
Microstructural Alteration of Hydrocarbon Contaminated Permafrost Affected Soils at the Caribou - Poker Creeks CREEL Research Watershed: Implications for Subsurface Transport |
title_fullStr |
Microstructural Alteration of Hydrocarbon Contaminated Permafrost Affected Soils at the Caribou - Poker Creeks CREEL Research Watershed: Implications for Subsurface Transport |
title_full_unstemmed |
Microstructural Alteration of Hydrocarbon Contaminated Permafrost Affected Soils at the Caribou - Poker Creeks CREEL Research Watershed: Implications for Subsurface Transport |
title_sort |
microstructural alteration of hydrocarbon contaminated permafrost affected soils at the caribou - poker creeks creel research watershed: implications for subsurface transport |
publishDate |
2000 |
url |
http://www.dtic.mil/docs/citations/ADA378625 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA378625 |
genre |
Caribou-Poker Creeks Research Watershed Ice permafrost Alaska |
genre_facet |
Caribou-Poker Creeks Research Watershed Ice permafrost Alaska |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA378625 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766388706002862080 |