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Geodynamics

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The first observational evidence for a volcanically active Venus

and March 22, 2023
The first observational evidence for a volcanically active Venus
An artist’s impression of active volcanoes on Venus, depicting a subduction zone and an active volcano.
Credit: NASA/JPL-Caltech/Peter Rubin

Our neighbouring planet Venus is gaining popularity in the terrestrial planetary sciences, especially since the selection of three new Venus missions by NASA and ESA in 2021. Now, for the first time ever, scientists have directly observed surface changes that indicate active volcanism on Venus. This discovery was made with data from NASA’s 30-year-old Magellan mission and is only a small preview f ...[Read More]

Study of the Lithospheric deformations, Earthquakes, Tsunamis, Volcanic eruptions and their imprints in Atmosphere using Space Geodetic Observations

and March 8, 2023
Study of the Lithospheric deformations, Earthquakes, Tsunamis, Volcanic eruptions and their imprints in Atmosphere using Space Geodetic Observations
Credit: Katsumi Hattori, presented in Ouzounov et al, 2018, Chapter 20

The fundamental of Space Geodesy is the observation of the dynamics of the Earth, such as its rotation on its axis, changes in shape, and the external gravitational field etc., which allow for the monitoring of the Earth system in general. Space Geodetic techniques, such as Global Navigation Satellite Systems (GNSS) / Global Positioning System (GPS), as well as Interferometric Synthetic Aperture R ...[Read More]

Planetary Boundaries: A Framework against Geodynamics?

and January 25, 2023
Planetary Boundaries: A Framework against Geodynamics?
The risks of crossing the Planetary boundaries for our planet Earth illustrated by Prachi Kar.

How can we determine a ‘safe operating space’ for humanity? In this week’s blog, Professor Ilan Kelman from University College London shares his thoughts about Planetary boundaries, and whether this framework will be successful for the next generations to come.  The planetary boundaries framework (Rockström et al. 2009ab; Steffen et al. 2015) might be useful for communicating some of humanity’s im ...[Read More]