To: IGSmail Message-Id: <31712d47d4c843f7fe9fbd648a70f283@jpl.nasa.gov> Content-Type: text/plain; charset="us-ascii" Subject: [IGSMAIL-5394]: Special Geodesy Session Fall AGU From: Erik R.Ivins Date: Thu, 17 Aug 2006 11:08:10 -0700 Sender: owner-igsmail Precedence: bulk ****************************************************************************** IGS Electronic Mail 17 Aug 13:27:05 PDT 2006 Message Number 5394 ****************************************************************************** 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@fryxell.jpl.nasa.gov Detlef Wolf GeoForscungsZentrum Potsdam Department 1: Geodesy and Remote Sensing Telegrafenberg Potsdam, DEU D-14473 +49-331-288-1140 dasca@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@ucalgary.ca