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DTSTART;TZID=Australia/Sydney:20260305T070000
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DTSTAMP:20260424T054636
CREATED:20260218T140956Z
LAST-MODIFIED:20260218T140956Z
UID:33158-1772694000-1772697600@geodesy.science
SUMMARY:Talks on GIA Seminar
DESCRIPTION:Paul Tregoning (Australian National University\, Canberra\, Australia)\, will present \n“A tool to assess the accuracy of glacial isostatic adjustment predictions of present-day crustal uplift rates” \nWhile there are many global and regional glacial isostatic adjustment (GIA) models available that can be used to compute expected present-day uplift rates of the surface of the Earth\, they do not always agree in their predictions. Obtaining accurate estimates of uncertainties in predictions is difficult due to the assumptions that must be made when constructing the GIA models\, and geodetic users often simply adopt a preferred model or assign uncertanties based on the spread of values derived from several models. Here we show that\, through a combination of gravity changes observed by GRACE/GRACE-FO and uplift observed by GNSS\, it is possible to quantify the error in uplift rates of one or more GIA models. Whilst it is not possible to repair the GIA models directly\, this tool can be used to identify regions where ice histories and/or Earth rheology parameters are deficient in the GIA models. In this talk I will give examples of locations where GIA modelling appears to be very accurate as well as indicate some locations that are clearly problematic.
URL:https://geodesy.science/event/talks-on-gia-seminar-4/
CATEGORIES:Commission 3,IACS
ATTACH;FMTTYPE=image/jpeg:https://geodesy.science/wp-content/uploads/AdobeStock_236598424_landscape.jpeg
ORGANIZER;CN="Joint IAG-IACS Commission on Cryospheric Deformation (Sub-Commission 3.4)":MAILTO:matthias.willen@tu-dresden.de
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DTSTART;VALUE=DATE:20250602
DTEND;VALUE=DATE:20250607
DTSTAMP:20260424T054636
CREATED:20250305T062105Z
LAST-MODIFIED:20250325T113645Z
UID:25594-1748822400-1749254399@geodesy.science
SUMMARY:2025 Glacial Isostatic Adjustment workshop: Advancing Models and Observational Constraints
DESCRIPTION:We are excited to announce that registration for the “2025 Glacial Isostatic Adjustment workshop: Advancing Models and Observational Constraints” taking place on June 2nd to 6th\, 2025\, in Sidney (British Columbia\, Canada) & online\, is now open. \nTo register\, please visit our website at https://polenet.org/2025-gia-workshop-registration/. \nPlease note that space is limited by the physical capacity of the workshop venue. Depending on the level of interest\, it may be necessary to cap in-person registration. If needed\, priority will be given to individuals with accepted abstracts and invited speakers\, with the remaining in-person registration seats offered on a first come\, first served basis. A notification will be posted on the workshop website (https://polenet.org/2025-gia-workshop/) if all in-person spaces have been filled. Registration deadline is April 11th\, 2025\, for in-person attendees. Virtual attendance is free of charge and there is no limit on the number of attendees. \nThe schedule and detailed programme will be published on the workshop website soon. \nIf you have any questions\, please feel free to reach out to Karen Simon (karen.simon@nrcan-rncan.gc.ca).
URL:https://geodesy.science/event/2025-glacial-isostatic-adjustment-workshop-advancing-models-and-observational-constraints/
LOCATION:Sidney\, CA\, Sidney\, Canada
CATEGORIES:Commission 3,IACS,IASPEI
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