Evolution of shallow groundwater flow systems in areas of degrading permafrost

Details Evolution of shallow groundwater flow systems in areas of degrading permafrost Evolution of shallow groundwater flow systems in areas of degrading permafrost

Nov 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3622401b&link_type=abstract

Geophysical Research Letters, Volume 36, Issue 22, CiteID L22401

Mathematics

Logic

8

Global Change: Impacts Of Global Change (1225), Global Change: Water Cycles (1836), Hydrology: Frozen Ground, Hydrology: Groundwater Hydraulics, Hydrology: Groundwater/Surface Water Interaction

Scientific paper

The recent increase in fresh-water discharge during low-flow conditions as observed in many (sub-)Arctic Rivers has been attributed to a reactivation of groundwater flow systems caused by permafrost degradation. Hydrogeological simulations show how groundwater flow conditions in an idealized aquifer system evolve on timescales of decades to centuries in response to climate warming scenarios as progressive lowering of the permafrost table establishes a growing shallow groundwater flow system. Ultimately, disappearance of residual permafrost at depth causes a sudden establishment of deep groundwater flow paths. The projected shifts in groundwater flow conditions drive characteristic non-linear trends in the evolution of increasing groundwater discharge to streams. Although the subsurface distribution of ice will markedly influence the system response, current modeling results suggest that late-stage accelerations in base flow increase of streams and rivers, are to be expected, even if surface air temperatures stabilize at the current levels in the near future.

Affiliated with

Also associated with

No associations

Rating

Evolution of shallow groundwater flow systems in areas of degrading permafrost does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Evolution of shallow groundwater flow systems in areas of degrading permafrost, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evolution of shallow groundwater flow systems in areas of degrading permafrost will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1265206