field work

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]

Geodesists on Tour: GPS measurements on Antarctica

Stephanie Konfal and edited by Rebekka Steffen October 10, 2021

ANET GPS site at Lepley Nunatak. Photo credit: Jeremy Miner

Stories from the field – how exactly are those GPS data collected? The geodesy community at large benefits from the many science projects with open data policies. A user simply has to navigate to a data portal, download the data, and within a matter of moments a world of possibilities opens up for potential research. But where exactly do these data come from? While scientific results get ...[Read More]

Geodesists on Tour: Gravity measurements on Antarctica

Jyri Näränen and edited by Rebekka Steffen August 10, 2021

Absolute gravity station at Aboa station in Western Queen Maud Land.

Antarctica is well known for its large ice sheet, covering 98% of the continent. A large part of the ice sheet is losing mass leading to vertical and horizontal movements of the crust as well as changes of the gravitational attraction. To observe these changes in gravity with the highest accuracy, it is necessary to visit Antarctica and measure gravity on a regular basis. Since the late 198 ...[Read More]