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UID:39483-1794326400-1794330000@geodesy.science
SUMMARY:Talks on GIA Seminar
DESCRIPTION:Jacky Austermann and Ben Stoker\, both at Columbia University\, Palisades\, USA\, will present \nProglacial Lakes as Windows into GIA and Drivers of Ice-Sheet and Climate Chang \nPart I (Jacky):\nProglacial lakes are lakes that form around the margins of ice sheets. Both talks will focus on proglacial lakes around the Laurentide Ice Sheet. In the first part\, we will present simulations of the Last Glacial Cycle where we included self-consistently evolving proglacial lakes in a glacial isostatic adjustment (GIA) model. We found that proglacial lakes are up to five times bigger (by volume) during the deglaciation compared to glaciation for the same ice position and size\, which is a result of the differences in the position and size of the peripheral bulge. Proglacial lake depth affects ice dynamics at the grounding line and we show that indeed at certain times during the deglaciation\, Laurentide ice-margin retreat rate is positively correlated with proglacial lake presence. This supports an early hypothesis that GIA – by shaping proglacial lakes – plays an active role in accelerating collapse of the deglacial Laurentide Ice Sheet. \nPart II (Ben):\nThe new NADI-1 reconstruction of the Laurentide Ice Sheet margin chronology allows us to update the GIA-proglacial lakes model to reconstruct proglacial lake evolution more accurately. Despite widespread evidence of glacial lake extent and dynamics at the basin-scale\, continental-scale compilations of this evidence is outdated and does not take advantage of the advances in surficial mapping. Here we will present a new effort to compile paleo lake shorelines across North America. We find that our lake compilation enhances existing databases by orders of magnitude along the western margin and therefore increases important constraints on GIA in the continental interior. We have compared our lake database to an ensemble of the GIA-proglacial lakes models and will show the new constraints that this data-model comparison puts on both ice reconstruction and solid Earth properties. Further\, we have used our best-fitting simulations to calculate freshwater routing over the deglaciation\, providing new\, data calibrated model predictions on where and how much freshwater forcing might have affected ocean circulation.
URL:https://geodesy.science/event/talks-on-gia-seminar-9/
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
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20270524
DTEND;VALUE=DATE:20270527
DTSTAMP:20260617T092053Z
CREATED:20260617T092053Z
LAST-MODIFIED:20260617T092053Z
UID:36950-1811116800-1811375999@geodesy.science
SUMMARY:NGGM Science and Applications Workshop 2027
DESCRIPTION:
URL:https://geodesy.science/event/nggm-science-and-applications-workshop-2027/
LOCATION:TBD\, Gruttosingel 20\, Carcassonne\, 2496HW\, France
CATEGORIES:AGU,BGI,Commission 2,Commission 3,COSPAR,EGU,FIG,GGOS,IACS,IAGA,IAHS,IAMAS,IAPSO,IASPEI,IAU,IAVCEI,ICCC,ICGEM,IGFS,ISG,IUGG,Projet QuGe,UN (United Nations)
ATTACH;FMTTYPE=image/png:https://geodesy.science/wp-content/uploads/NGGM_Workshop_2027_Copyright-EuropeanSpaceAgency_2026-06-17_cda9f0.png
ORGANIZER;CN="European Space Agency":MAILTO:ilias.daras@esa.int
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20270716
DTEND;VALUE=DATE:20270723
DTSTAMP:20260921T051447Z
CREATED:20250305T083912Z
LAST-MODIFIED:20260921T051447Z
UID:25751-1815696000-1816300799@geodesy.science
SUMMARY:IUGG General Assembly 2027
DESCRIPTION:This IUGG General Assembly will get under way at Incheon’s Songdo Convensia in July 2027. Incheon is expecting more than 5\,000 scientists and experts from both Korea and abroad to attend the event. \nEvent website: https://iugg2027korea.org/ \nEvent Category: iugg
URL:https://geodesy.science/event/iugg-general-assembly-2027/
LOCATION:Incheon\, South Korea\, Incheon\, South Korea
CATEGORIES:IACS,IAG,IAGA,IAHS,IAMAS,IAPSO,IASPEI,IAVCEI,IUGG
ATTACH;FMTTYPE=image/png:https://geodesy.science/wp-content/uploads/iugg2027_incheon-korea.png
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20280528
DTEND;VALUE=DATE:20280603
DTSTAMP:20251210T083426Z
CREATED:20251210T083426Z
LAST-MODIFIED:20251210T083426Z
UID:32258-1843084800-1843603199@geodesy.science
SUMMARY:2028 Glacial Isostatic Adjustment Workshop
DESCRIPTION:A workshop focused on glacial isostatic adjustment (GIA)\, ice sheets\, sea-level change\, and associated geodetic and geophysical observational constraints will be held in Dresden\, Germany\, from 28 May to 2 June 2028. This will be a follow-on workshop in a series of similar events. The last GIA Workshop took place in Sidney\, BC\, Canada\, in 2025 (cf. https://polenet.org/2025-gia-workshop/). Detailed information will be published in due time.
URL:https://geodesy.science/event/2028-glacial-isostatic-adjustment-workshop/
LOCATION:TU Dresden\, Dresden\, Germany
CATEGORIES:Commission 3,IACS,IAG,IASPEI,IUGG
ATTACH;FMTTYPE=image/jpeg:https://geodesy.science/wp-content/uploads/AdobeStock_236598424_landscape.jpeg
ORGANIZER;CN="IAG/IACS subcommission 3.4 %E2%80%9CCryospheric Deformation%E2%80%9D":MAILTO:mirko.scheinert@tu-dresden.de
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