field work

Around the world with Professor Vening Meinesz onboard the submarine K-XVIII: The Origin of Flexure Modelling

Bart Root June 28, 2024

Andreas Johnsson (distributed via imaggeo.egu.eu)

In my previous blog post, I wrote about the famous voyage of Professor Vening Meinesz aboard the submarine K-XVIII. At 30 meters underneath the surface, Vening Meinesz would observe the gravity field of Earth with a pendulum apparatus called the Golden Calf. In this post, I would like to discuss a different voyage the professor took part in. Normally the Dutch submarines took the Suez Canal to sai ...[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]

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]