Conf Digest, Vol 9, Issue 1

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Conf Digest, Vol 9, Issue 1

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     CRYOLIST Conference Digest

Today's Topics:

   1. Bullerwell lecture at EGU (Pippa L. Whitehouse)


Message: 1
Date: Fri, 13 Apr 2012 17:09:48 +0100
From: "Pippa L. Whitehouse" <[hidden email]>
To: "'[hidden email]'" <[hidden email]>
Subject: Bullerwell lecture at EGU
Message-ID: <C80C61ACE0A5EA42819B1F37B973725F7BFFE8EC92@MAILWEST>
Content-Type: text/plain; charset="us-ascii"

The lecture advertised below will be given at the forthcoming EGU Meeting in Vienna, and should be of interest to many in the Cryosphere community.

Bullerwell Lecture 2012
The lectureship, named after William Bullerwell, first Chief Geophysicist of the (predecessor to the) British Geological Survey, is a prestigious appointment for an outstanding young or early-career geophysicist. This year's Bullerwell Lecturer is Dr Matt King, Reader in Polar Geodesy at the School of Civil Engineering and Geosciences, Newcastle University.  Matt is a geodesist specialising in the use of GPS and GRACE data to constrain the geophysical behaviour and evolution of ice sheets, loading of the solid Earth, glacio-isostatic adjustment, and sea level change.

Title: "Towards accurate observation and modelling of Antarctic glacial isostatic adjustment"

The response of the solid Earth to glacial mass changes, known as glacial isostatic adjustment (GIA), has received renewed attention in the recent decade thanks to the Gravity Recovery and Climate Experiment (GRACE) satellite mission. GRACE measures Earth's gravity field every 30 days, but cannot partition surface mass changes, such as present-day cryospheric or hydrological change, from changes within the solid Earth, notably due to GIA. If GIA cannot be accurately modelled in a particular region the accuracy of GRACE estimates of ice mass balance for that region is compromised.

This lecture will focus on Antarctica, where models of GIA are hugely uncertain due to weak constraints on ice loading history and Earth structure. Over the last years, however, there has been a step-change in our ability to measure GIA uplift with the Global Positioning System (GPS), including widespread deployments of permanent GPS receivers as part of the International Polar Year (IPY) POLENET project. I will particularly focus on the Antarctic GPS velocity field and the confounding effect of elastic rebound due to present-day ice mass changes, and then describe the construction and calibration of a new Antarctic GIA model for application to GRACE data, as well as highlighting areas where further critical developments are required.

The lecture will take place during EGU on Tue, 24 Apr, 19:00-20:00 / Room 1 (see for details).



End of Conf Digest, Vol 9, Issue 1
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