Geodesy

Guest post

Calculating postglacial sea-level change within few seconds: a statistical emulator for GIA

Yucheng Lin, Marius Schlaak and Bramha Dutt Vishwakarma December 22, 2023

Figure 1. Map of the global ice sheet and topography during the Last Glacial Maximum. Areas with dark green colour indicate land created by sea-level lowering. Figure courtesy of J. Austermann; Dendy et al., 2017.

Sea-level change serves as a direct indicator of climate change with profound implications for coastal areas. Since 1900, the global mean sea level (GMSL) has risen over 20 cm, leading to beach erosion, delta inundation, and increased flooding worldwide. Over glacial cycles spanning tens of thousands of years, interactions between ocean and continental-scale ice sheets can cause GMSL to fluctuate ...[Read More]

Reshaping Earth: GIA and its far-reaching effects

Holger Steffen, Rebekka Steffen, Yucheng Lin and edited by Öykü Koç December 19, 2023

Julien Seguinot (distributed via imaggeo.egu.eu)

As the Geodesy blog team (we are growing, horaay!), we wanted to create a space for researchers to talk about their work/papers in a more simplified language. For the first post in this series, we said “Wouldn’t it be cool if we learn more about Glacial Isostatic Adjustment (GIA) models?” then we realised that we first need to uncover what GIA is. So, we passed the pen to Holger, Rebekka and Yuche ...[Read More]

Geodesists on Tour: On a Campaign in the Arctic with a Giraf(f)e in the Aircraft

Tim Jensen and edited by Rebekka Steffen November 6, 2023

First view of the Greenland east coast after crossing the Denmark Strait

Way too early on a Saturday morning in late June 2023 I woke up and started my travel to a small airport in Akureyri, North-East Iceland. This is the location of an Icelandic charter company called Norlandair that we used for our airborne geophysical surveys and logistic operations in the Arctic. For a few months I had been preparing a survey to test a new quantum-based technology for airbo ...[Read More]

What would we like to see from future gravity missions? Help us to define the scientific requirements!

ESA's QSG4EMT Study Team, edited by Öykü Koç and Rebekka Steffen May 19, 2023

Figure: QSG4EMT study team

Are you interested in water storage, sea level, ice sheets, crust-mantle dynamics, or any other mass change signals? Please complete the following user requirement survey and help shape future satellite gravity missions Mass changes on and below the Earth’s surface, such as from water storage variations to groundwater use, glacier melt, sea level change, and earthquakes, among many others, c ...[Read More]

About

Welcome to the blog of the Geodesy Division of the European Geosciences Union. The blog serves to keep you posted on current research, news from the division and interesting geodesy-related topics in general. It will also give room to feature young (early-career) scientists and their science. An enthusiastic team of (Early Career) Scientists (ECS) runs the blog. Are you interested in writing a blog entry or learning more about the ECS activities of the geodesy division? Please get in touch with the Editor-in-Chief, Rebekka Steffen, or the ECS Geodesy (G) Representative Öykü Koç and ECS G Co-Representative Marius Schlaak.