Water balance of a small lake in a permafrost region

Water balance of a small lake in a permafrost region by Charles W. Hartman Download PDF EPUB FB2

Get this from a library. Water balance of a small lake in a permafrost region. [Charles W Hartman; Robert F Carlson]. Lake - Lake - The hydrologic balance of the lakes: The role of lakes within the global hydrologic cycle has been described earlier.

Lakes depend for their very existence upon a balance between their many sources of water and the losses that they experience.

This so-called water budget of lakes is important enough to have warranted considerable study throughout the world, with each lake or lake. Water Balance of a Small Lake in a Permafrost Region. By Charles W. Hartman and Robert F. Carlson. Get PDF ( KB) Publisher: University of Alaska, Institute of Water Resources.

Year: OAI identifier: oai: Author: Charles W. Hartman and Robert F. Carlson. These actions have their consequences: in the course of the year timeframe studied, the overall water area in the Kotzebue region grew by percent.

And roughly two-thirds of. Save 84% off the newsstand price. Reindeer herders in northern Siberia have discovered the skeleton of a woolly mammoth whose ligaments remain intact.

In the permafrost region of the QTP, alpine wet meadow (AWM), alpine meadow (AM) which are associated with the water balance on a regional scale.

The distinction of K values in the permafrost layer was small in the alpine ecosystems, with only m d −1 in the permafrost layer. Therefore, in research on hydrological cycles. A lake is an area filled with water, localized in a basin, surrounded by land, apart from any river or other outlet that serves to feed or drain the lake.

Lakes lie on land and are not part of the ocean, although like the much larger oceans, they form part of earth's water are distinct from lagoons which are generally coastal parts of the ocean.

So a new lake is formed which degrades ice-rich permafrost in the basin, adding to the effect of increasing the depth of the engineered waterbody,” added Jones.

These actions have their consequences: in the course of the year timeframe studied, the overall water area in the Kotzebue region grew by percent. The regional totals indicate a net decline in Siberian lake cover but mask an interesting spatial pattern.

In continuous permafrost, total lake area increased by 13, ha (12%), and lake numbers rose from in + to by –98 (+4%) ().This trend of net lake growth in continuous permafrost stands in sharp contrast with more southerly zones of discontinuous, sporadic, and.

Thermokarst lakes are one of the most abundant types of microbial ecosystems in the circumpolar North. These shallow basins are formed by the thawing and collapse of ice-rich permafrost, with subsequent filling by snow and ice melt. Until now, permafrost thaw lakes have received little attention for isolation of microorganisms by culture-based analysis.

The discovery of novel psychrophiles and. Permafrost SIP microcosms. Permafrost cores were collected ∼ 10 m from the shore of Smith Lake, Fairbanks, Alaska in June The landscape was characterized by shrub and small.

The water level in the overflowing lakes is rather stable, while the water level in the terminal lakes varies with the climate. In some lakes with small upstream catchment, the inflow to the lake is dominated by the precipitation on the lake, but usually inflow rivers are the dominating source of inflow to a lake.

Water Balance [13] Our estimation of the seasonal water budget for the studied ponds in showed that losses through evaporation were offset by similar precipitation inputs prior to the freezeback, resulting in a general state of equilibrium. On average, evaporation rates were about 2 mm d −1, with a maximum of 3 mm d −1.

Lake and. Aquatic Environment Consultants, Inc. P.O. BoxScotland, PA Our Office Philadelphia Ave, Chambersburg, PA Phone Number: Fax: Thermokarst lake formation is a dominant mode of permafrost degradation and is linked to surface disturbance, subsequent melting of ground ice, surface subsidence, water impoundment, and positive.

This study investigates lake-basin interactions by examining the changes in the water distribution between the land and a lake with an examination of the Poyang Lake region, China.

Thermokarst lake formation is a dominant mode of permafrost degradation and is linked to surface disturbance, subsequent melting of ground ice, surface subsidence, water impoundment, and positive feedbacks between lake growth and permafrost thaw, whereas lake drainage generally results in local permafrost aggradation.

This study presents thermokarst lake changes at seven different sites in the continuous and isolated permafrost zones in Mongolia. Lakes larger than ha were analyzed using Corona KH-4, KH-4A and KH-4B (), Landsat ETM + (), and ALOS/AVNIR-2 () satellite imagery.

Between andthe total number and area of lakes increased by +21% ( to ), and. Warmer winters combined with an increase in snowfall during the last 30 years have limited the growth of seasonal lake ice. In response, lakebed temperatures of Arctic lakes less than 1.

Lake and pond water levels varied less than 10 cm during the study period. Overall, the water balance from April to September was in equilibrium, i.e., the precipitation input ( mm) was only slightly higher than the evapotranspiration output ( mm).

So a new lake is formed which degrades ice-rich permafrost in the basin, adding to the effect of increasing the depth of the engineered waterbody,” added Jones.

These actions have their consequences: in the course of the year timeframe studied, the overall water area in the Kotzebue region grew by percent.Chapter 5. WATER BALANCE AND PERCOLATION M. R.

Savabi and J. R. Williams Introduction The water balance and percolation components of the WEPP model are designed to use input from the climate, infiltration, and crop growth components to estimate soil water content in the root zone and evapotranspiration losses throughout the simulation period.The permafrost keeps melted water near the surface, where plants need it.

However, this balance is fragile. If the plant cover is damaged, the permafrost can thaw. Thawing permafrost can make the ground collapse and disturb and deepen the active layer.

This can also affect the plants and animals that have lived there for many years (Figure 3).