geodesy

The comprehensive Geodetic Information Portal of GGOS

Martin Sehnal, edited by Rebekka Steffen and Andreas Kvas (Editor) June 13, 2022

Global Geodetic Observing System (GGOS)

The Global Geodetic Observing System (GGOS) of the International Association of Geodesy (IAG) is a collaborative contribution of the global geodesy community to the observation and monitoring of the Earth System. Geodesy is the science of determining the shape of the Earth, its gravity field, and its rotation as functions of time. Essential to reaching this goal are stable and consistent geodetic ...[Read More]

What’s up for geodesy during the upcoming EGU22?

Rebekka Steffen May 16, 2022

Austria Center in Vienna. Photo credit: Holger Steffen

It’s this time of the year again where we all try to 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) will be a hybrid meeting this year: EGU22. There will be scientific sessions with short oral presentations, networking opportunities and short courses. All scientific sessions and most short cours ...[Read More]

Geodesists on Tour: GNSS measurements in East Africa

D. Sarah Stamps and edited by Rebekka Steffen March 23, 2022

Installation of site UGN6 at the Queen’s Pavilion (Uganda). Photo Credit: D. Sarah Stamps.

Africa hosts the world’s most extensive subaerial rift system on Earth known as the East African Rift System (EARS). It stretches over 5000 km from the Red Sea and Gulf of Aden intersection in the north to the Southwest Indian Spreading Ridge south of South Africa. East-West, the EARS spans the eastern border of the Democratic Republic of Congo across to eastern Madagascar over 3000 km. The ...[Read More]

Geodesists on Tour: On the left side of the road for getting the g

Przemysław Dykowski and edited by Rebekka Steffen January 24, 2022

A10-020 absolute gravimeter a gravity station near Newport (Ireland).

Getting the small g (the absolute gravity value) outdoors has always been some sort of a challenge. But, in the early 2000s the possibility to measure gravity has changed by the arrival of the first A10 absolute gravimeters. They to a large extent revolutionized the approach of performing gravity measurements in the open field and with that improved the approach to design and measure national grav ...[Read More]