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DTSTART;VALUE=DATE:20260302
DTEND;VALUE=DATE:20260307
DTSTAMP:20260418T130432
CREATED:20250224T071838Z
LAST-MODIFIED:20250616T062856Z
UID:25563-1772409600-1772841599@geodesy.science
SUMMARY:Munich 2026 | REFAG Symposium + Unified Analysis Workshop UAW
DESCRIPTION:The Technical University of Munich (TUM) is proud to lead global geodetic research as it currently holds the presidents of Commission 1 “Reference Frames” of the International Association of Geodesy (IAG) and the IAG Global Geodetic Observing System (GGOS). In this prominent role\, TUM is excited to host two landmark events in 2026: \n\nThe IAG International Symposium on Reference Frames for Applications in Geosciences (REFAG2026)\, 2–4 March 2026\, and\nThe joint GGOS/IERS (International Earth Rotation and Reference Systems Service) Unified Analysis Workshop (UAW2026)\, 5–6 March 2026\n\nThese events will bring together leading experts\, researchers\, and institutions to shape the future of global geodesy — right here at TUM in Munich\, Germany. \nPlease find more information here…
URL:https://geodesy.science/event/munich2026/
LOCATION:LDBV – Landesamt für Digitalisierung\, Breitband und Vermessung\, Alexandrastraße 4\, Munich\, 80538\, Germany
CATEGORIES:Commission 1,GGOS,IAG Services,IERS
ATTACH;FMTTYPE=image/png:https://geodesy.science/wp-content/uploads/munichArtLandscape1.png
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BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20260305T070000
DTEND;TZID=Australia/Sydney:20260305T080000
DTSTAMP:20260418T130432
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
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Rome:20260311T160000
DTEND;TZID=Europe/Rome:20260311T170000
DTSTAMP:20260418T130432
CREATED:20260309T125919Z
LAST-MODIFIED:20260309T125919Z
UID:34064-1773244800-1773248400@geodesy.science
SUMMARY:Tracking Mountain Aquifer using Space Geodesy
DESCRIPTION:Dear Colleagues\,\n\nWe are pleased to announce our first seminar for our series\, hosted by the International Association of Geodesy (IAG) Working Group 3.1: Hydrologic Signature in Geodetic Observations\, will be given by Matthew Swarr\, from the University of Montana.  This seminar wil be held at 11:00 EDT/ 8:00 PDT/ 16:00 CET/ 23:00 CST.\n\nJoin the webinar:  \nhttps://iu.zoom.us/j/82295302430\nMeeting ID: 822 9530 2430\n\nTitle: Tracking Mountain Aquifer Storage and Discharge Using Space Geodesy\nAbstract: Fractured bedrock underlying mountain ranges is a critical source of water for mountain and adjacent low-elevation communities and ecosystems. Despite the importance of mountain groundwater systems to water supplies of major socioeconomic regions\, quantifying storage changes within these aquifers remains a challenge. To evaluate the fate of water stored in mountain systems and the role of extreme precipitation events\, such as atmospheric rivers\, in replenishing groundwater storage\, we use high-precision Global Navigation Satellite Systems (GNSS) surface displacements to constrain changes in groundwater storage within the Sierra Nevada and Cascade mountain ranges\, two important mountainous regions of the Western United States. We find that mountain aquifers have been significantly depleted over the past two decades\, associated with recurrent severe multi-year droughts within these regions. However\, extremely wet winters\, can replenish storage by more than twice the average annual flux over relatively short periods\, driving the state of groundwater storage from historical lows to above normal conditions. Further\, we find GNSS derived groundwater storage changes are strongly correlated with observed groundwater head from wells. These findings show that periods of extreme precipitation rapidly recharge mountain aquifer systems and can offset multi-year losses. Moreover\, mountain aquifer systems can retain storage gains for several years post-event\, providing a durable source of streamflow\, agricultural\, and municipal water supply. As extreme precipitation events are predicted to become more intense and frequent in coming years\, we hypothesize that these events may help offset groundwater loss due to aridification\, sustaining ecosystems and buffering against a new\, drier climate normal. Additionally\, we provide insights on a newly developed method to constrain the hydraulic properties of mountain groundwater systems at the mountain range-scale using fluid diffusion models in combination with our GNSS-inferred estimates of groundwater storage. Our results indicate the effective hydraulic conductivity of the bedrock within the Sierra Nevada and Cascades is an order of magnitude higher than previous findings\, and we find consistency between our estimates of the average groundwater flow path length within the Sierra Nevada and Cascades and those derived from perennial and intermittent and perennial stream networks\, respectively\, indicating the Cascades to be a recharge dominated groundwater system with increased regional groundwater flow compared to the Sierra Nevada. These results further the current understanding of the storage and release properties of mountain groundwater systems as well as highlighting the use of geodetic observations in advancing groundwater hydrology.\n\n\nCarla Braitenberg and Grace Carlson\n\nGrace Carlson\nshe/ her\nDepartment of Geography\nIndiana University\n\n\nCarla Braitenberg\nDepartment of Mathematics\, Informatics and Geosciences\nUniversity of Trieste
URL:https://geodesy.science/event/tracking-mountain-aquifer-using-space-geodesy/
CATEGORIES:Commission 3
ATTACH;FMTTYPE=image/jpeg:https://geodesy.science/wp-content/uploads/AdobeStock_236598424_landscape.jpeg
ORGANIZER;CN="Commission 3- Earth Rotation and Geodynamics. WG 3.1 Hydrologic signature in geodetic observations":MAILTO:berg@units.it
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20260316
DTEND;VALUE=DATE:20260321
DTSTAMP:20260418T130432
CREATED:20251106T061830Z
LAST-MODIFIED:20251120T101331Z
UID:31681-1773619200-1774051199@geodesy.science
SUMMARY:EPOS days 2026
DESCRIPTION:EPOS Days is the flagship annual conference of the European Plate Observing System (EPOS)\, bringing together researchers\, data providers\, and infrastructure developers from across Europe to advance collaboration in solid Earth science. The event serves as a key forum to discuss the evolution of EPOS as a pan-European research infrastructure and to showcase progress in data interoperability\, FAIR principles\, and service integration across the various Thematic Core Services (TCS). \nThe programme combines plenary talks\, thematic sessions\, and interactive discussions covering: \n\nintroductions to EPOS and its services for newcomers and partners;\nupdates from the different TCS communities\, including geodesy\, seismology\, volcanology\, and geomagnetism;\nsessions on technical challenges\, data policy\, and ICS–TCS integration;\ndiscussions on responsible and societal use of research infrastructures;\ninternational collaboration and national implementation showcases;\nnetworking opportunities such as poster sessions and a dedicated Early Career Researchers event.\n\nOverall\, EPOS Days provides a dynamic platform to exchange knowledge\, align technical developments\, and strengthen the community working towards a FAIR\, open\, and sustainable EPOS infrastructure for solid Earth science in Europe.
URL:https://geodesy.science/event/epos-days-2026/
LOCATION:Palazzo Doglio hotel conference centre\, Cagliary\, Italy
CATEGORIES:Commission 3,IAGA,IASPEI,IAVCEI,IGETS,IGS,🌐 Other,📚 Education & Training
ATTACH;FMTTYPE=image/jpeg:https://geodesy.science/wp-content/uploads/EPOSdays_26_A3_DEF_blu_Copyright-EPOSERIC_2025-11-05_721b62.jpg
ORGANIZER;CN="EPOS ERIC":MAILTO:communication@epos-eric.eu
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