*Wednesday, June 17 (11am ADT)*
VAWS: Responses of Permafrost Land
scape to Surface Disturbances ? Case
studies in Siberian forest and A
laskan tundra
(https://uaf-accap.org/event/vaws-permafrost-june2020/)
*Go IwahanaResearch Assistant ProfessorInternational
Arctic Research
CenterUniversity of Alaska Fairbanks*
Gr
ound-surface disturbances, including wildfires, deforestation, and
cl
imate change, alter the thermal status of permafrost leading landscape
changes in Polar Regions. Given the increasing number of reports about
rapid permafrost thaw and predicted occurrence of wildfires in the Arct
ic,
it is of great social concern to know where and to what extent pe
rmafrost
degradation is currently ongoing and may occur in the near f
uture. This is
true, especially in ice-rich permafrost zones, as cons
equential subsidence
by ice-rich permafrost thaw (thermokarst) will c
ause significant changes in
surface ecology, landscape evolution, and
hydrological processes.
This presentation introduces several
case studies on thermokarst subsidence
observed in the field and by r
emote sensing in various time ranges. Field
surveys and microwave rem
ote sensing analyses were conducted to quantify
thermokarst after sur
face disturbances in boreal forests of NE Siberia and
tundra fire sca
rs in Alaska.
More information and registration here.