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Geodesy

geodesy

Regional Reference Frames: Keeping Track of a Deforming Earth

Regional Reference Frames: Keeping Track of a Deforming Earth

You are observing the construction of a bridge that will be initiated on the two banks of a river simultaneously, in such a way that the works will eventually meet in the middle of the river. You wonder, how do they make sure that the construction on the two sides will stay aligned with the millimeter precision that this project requires? You are aware of previous constructions where small miscalc ...[Read More]

From Quasars to Coordinates: How VLBI Measures Earth’s Shape and Motion

From Quasars to Coordinates: How VLBI Measures Earth’s Shape and Motion

Imagine determining the position of a point on Earth with millimeter precision using radio signals from celestial objects billions of light-years away. This may sound like science fiction, but it is exactly what Very Long Baseline Interferometry (VLBI) allows scientists to do. What is VLBI? Long before satellites and digital maps, people looked to the sky and used celestial objects—most commonly t ...[Read More]

What’s up for geodesy during the upcoming EGU26?

What’s up for geodesy during the upcoming EGU26?

It’s this time of the year again when we all meet up in Vienna and talk about our latest scientific results and, more importantly, network with old and new colleagues. The EGU General Assembly (GA) EGU26 will take place again in a hybrid format. The scientific programme consists, as usual, of oral and poster presentations, Pico sessions, networking opportunities, and short courses. All scientific ...[Read More]

Bits and Bites of Geodesy – Satellite Gravimetry: Studying Earth’s water cycle from space

Bits and Bites of Geodesy – Satellite Gravimetry: Studying Earth’s water cycle from space

During winter, mountains gain mass because of snow covering the peaks. In spring, the snow melts and flows downstream until it reaches the ocean or evaporates into the atmosphere to reach back on the surface as rain or snow. The global water cycle is very complex and essential for life on our planet. Did you know we can measure how the water is distributed by measuring its mass from space? How can ...[Read More]

Climbing Through a PhD – Mental Health on the Way to the Summit

Climbing Through a PhD – Mental Health on the Way to the Summit

Imagine you are going on a long mountain tour. Your backpack is heavy, the path is steep, and although you have been walking for hours, all you can see ahead of you is the next climb. Doing a PhD is like climbing such a mountain. It can feel exhausting, there is always the next challenge ahead and the finish line seems to never get closer. Self-doubt and the feeling of not doing enough accompanies ...[Read More]

Seeing Geodesy clearly – suitable colours for effective and inclusive visualization

Seeing Geodesy clearly – suitable colours for effective and inclusive visualization

Effective scientific communication of geodetic research often relies on clear visualizations, and colours are needed to make complex data much easier to understand. However, traditional colormaps don’t always provide the needed clarity and can be especially challenging for people with colour-vision deficiencies (CVD). In this post, we will first describe what CVD is and how it is present in academ ...[Read More]

Bits and Bites of Geodesy – Trilateration on Vacation: How GNSS Locates You

Bits and Bites of Geodesy – Trilateration on Vacation: How GNSS Locates You

Summer vacations are finally here! Like every year, many of us are ready to travel and explore new and exciting destinations. And of course, the GPS on our phones will be an indispensable travel companion! Did you know that GPS (or GNSS) positioning is one of the traditional geodetic techniques? Come along to discover how this technique can find your location in the world and the various applicati ...[Read More]

Bits and Bites of Geodesy – From Wobble to Wander: Tracking Earth’s Shifting Rotation Axis

Bits and Bites of Geodesy – From Wobble to Wander: Tracking Earth’s Shifting Rotation Axis

When we think of Earth’s rotation, it is tempting to imagine a perfectly smooth spin. But in reality, Earth’s rotation is irregular and dynamic, and is influenced by forces inside and outside of our planet. To describe the changing orientation of the Earth in space over time Earth Orientation Parameters (EOPs) are measured with fundamental geodetic measuring techniques, e.g., Very Long Baseline In ...[Read More]

Geodesy Division Highlights at EGU25: Your Essential Guide

Geodesy Division Highlights at EGU25: Your Essential Guide

Disclaimer: This is just a small preview of the many other exciting events planned for GA!  The annual EGU General Assembly is upon us once again, beckoning geodesy enthusiasts to Vienna for a convergence of scientific exchange and networking. Embracing a hybrid conference format, EGU ensures accessibility for both in-person and virtual attendees. From traditional oral and poster presentations to ...[Read More]

EGU Campfire Geodesy – Share Your Research – Eighth Edition

EGU Campfire Geodesy – Share Your Research – Eighth Edition

We are finally back with the 8th edition of Geodesy Campfire – Share Your Research. The Geodesy EGU Campfire Events “Share Your Research” give (early career) researchers the chance to talk about their work. We have two exciting talks; one by Leire Retegui-Schiettekatte and the other by Vipin Kumar Maurya. Below you can find detailed descriptions of their talks. We will have time to network a ...[Read More]