[IGSMAIL-5394]: Special Geodesy Session Fall AGU

[Erik R.Ivins]

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IGS Electronic Mail      17 Aug 13:27:05 PDT 2006      Message Number 5394
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Author: Erik Ivins
Subject: Session G-16 Fall AGU Call for Abstracts
Dear Colleagues:

We would like to draw your attention to a special session at the San
Francisco AGU this December that focuses on secular trends in Geodesy
and their possible interpretation as Glacial Isostatic Adjustment
phenomenon.  A complete description is given at
http://www.agu.org/meetings/fm06/?content=search&show=detail&sessid=528

and is also given here.  Please note that the deadline for submission
of abstracts is 23:59 UT September 7, 2006.
http://submissions4.agu.org/submission/entrance.asp

Session G16

Glacial Isostatic Adjustment: New Developments and Applications in
Global Change, Hydrology, Sea Level, Cryosphere and Geodynamics

The measurement of glacial isostatic adjustment (GIA) is one of the key
ways in which we probe the mantles long-term rheology and Pleistocene
ice history. However, GIA also influences global and regional geodetic
measurements in a number of ways: As we now approach having 48 monthly
solutions of GRACE (Gravity and Climate Experiment) for time variable
gravity, it is natural to investigate the secular and interannual mass
variations associated with hydrology, ocean circulation and climate.
How GIA affects the interpretation of these changes is of
ever-increasing concern. Thus, one of the focus of this session is on
the determination of the secular trends associated with GIA proximal to
the location of the past Weichselian and Wisconsin ice sheets and on
the study of the more subtle trends found further away from the last
Pleistocene ice sheet centers. In addition, GIA also has ramifications
for sea-level studies and for geodetic and altimetric determinations of
recent ice sheet and ice cap changes. Global Positioning System (GPS)
crustal motion data, absolute gravity data, ice sheet reconstructions,
relative sea level and tide gauge data and the construction of the
earth's free relaxation spectrum all aid in constraining GIA. In
addition to the availability of new data, advanced computations of the
GIA response with realistic 3-D earth structure models are now capable
of providing new insights into the manner in which geodetic and other
data constrain the mantle and lithospheric mechanical creep properties.
Significant advances have recently been made by using interdisciplinary
approaches and by applying multiple data sets. We encourage papers
concerned with GIA as primary scientific objective and others focusing
on cross-disciplinary objectives, for example interpreting both
hydrological and GIA signals.

CoSponsors: Cryosphere, Ocean Sciences, Paleoceanography &
Paleoclimatology, Tectonophysics

Conveners:
Erik R Ivins
Jet Propulsion Lab/ California Institute of Technology
MS 300-233
4800 Oak Grove Dr.
Pasadena, CA, USA  91109-8099
818-354-4785
eri at fryxell.jpl.nasa.gov

Detlef Wolf
GeoForscungsZentrum Potsdam
Department 1: Geodesy and Remote Sensing
  Telegrafenberg
Potsdam, DEU  D-14473
+49-331-288-1140
dasca at gfz-potsdam.de

Patrick Wu
Department of Geology & Geophysics, Univ. of Calgary
Earth Science Building, Room 276
Calgary, AL, CAN  T2N 1N4
403-220-7855
ppwu at ucalgary.ca