Annual dynamics within the active layer. Annual progress report, March 15, 1990--March 14, 1991

Technical Report · Tue Dec 31 04:00:00 EST 1991

DOI:https://doi.org/10.2172/10142076· OSTI ID:10142076

We have continued our meteorological and hydrologic data collection in support of our process-oriented research. The six years of data collected to date is unique in its scope and continuity in a North Hemisphere Arctic setting. This valuable data base has allowed us to further our understanding of the interconnections and interactions between the atmosphere/hydrosphere/biosphere/lithosphere. The increased understanding of the heat and mass transfer processes has allowed us to increase our model-oriented research efforts. Examples of applications are the following. (1) Spring snowmelt on the North Slope of Alaska is the dominant hydrologic event of the year. This event provides most of the moisture for use by vegetation in the spring and early summer period. The mechanisms and timing of snowmelt are important factors in predicting runoff, the migrations of birds and large mammals and the diversity of plant communities. It is important globally due to the radical and abrupt change in the surface energy balance over vast areas. (2) We were able to explore the trends and differences in the snowmelt process along a transect from the Brooks Range to the Arctic Coastal plain. Snowpack ablation was monitored at three sites. These data were analyzed along with meteorologic data at each site. The initiation of ablation was site specific being largely controlled by the complementary addition of energy from radiation and sensible heat flux.

• Research Organization: Alaska Univ., Fairbanks, AK (United States). Water Research Center
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FG06-84ER60247
• OSTI ID: 10142076
• Report Number(s): DOE/ER/60247--T1; ON: DE92013520
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540250
58 GEOSCIENCES
580000
ABLATION
ALASKA
ARCTIC REGIONS
CLIMATE MODELS
CLIMATIC CHANGE
COMPILED DATA
DATA BASE MANAGEMENT
ENERGY BALANCE
EVAPORATION
FLOW MODELS
GEOSCIENCES
GLACIERS
HEAT TRANSFER
HYDRODYNAMIC MODEL
HYDROLOGY
MASS TRANSFER
MATHEMATICAL MODELS
METEOROLOGY
MONTHLY VARIATIONS
PROGRESS REPORT
RUNOFF
SEASONAL VARIATIONS
SITE RESOURCE AND USE STUDIES
SNOW
SOILS
TRANSPIRATION
WATERSHEDS