Kaberi Kar Gupta
unread,Feb 13, 2012, 5:45:11 PM2/13/12Sign in to reply to author
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to Central Valley Café Scientifique
Hi all,
We are meeting for cafe scientifique talk at Landmark restaurant at
Tower district. tonight. Talk will be on global sealevel changes
deciphering long term data...
Here is the abstract of the talk:
Deciphering the long-term history of global sea-level change
Monday, February 13, 2012 7:00-8:15 PM
Dr. Craig Fulthorpe
University of Texas
Institute for Geophysics
In order to predict future changes in global sea level and shoreline
location, it is vital to constrain the range of past variability. One
way to do this is to investigate the thick sediment accumulations
beneath continental shelves and slopes. Continental margin sedimentary
packages (sequences) and their bounding unconformities constitute long
records of global sea-level change, created as the shoreline migrates
back and forth across the continental shelf. Complicating this record
are basin subsidence, changes in the rate of sediment supply and other
local processes that can superimpose their signatures on the preserved
stratigraphy. Scientific ocean drilling of globally coordinated
transects of boreholes across continental margins provides the best
way to distinguish these effects and extract the sea-level signal.
Continuous coring provides information on sediment ages, depositional
environment and paleowater depths during multiple sea-level cycles
spanning millions of years.