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Geodesy

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Geodesists on Tour: GNSS measurements in East Africa

and March 23, 2022
Geodesists on Tour: GNSS measurements in East Africa
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

and January 24, 2022
Geodesists on Tour: On the left side of the road for getting the g
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]

Around the world with Professor Vening Meinesz onboard the submarine K-XVIII: Exploration of the Solid Earth

and November 12, 2021
Around the world with Professor Vening Meinesz onboard the submarine K-XVIII: Exploration of the Solid Earth
Gravimetrical-Geological Map East Indian Archipelago. Photo credit: From the Gravity Expeditions at Sea Vol. 4, F.A. Vening Meinesz.

  On 14th of November 1934, the Dutch travelled to the harbor of Den Helder situated in the north of the Netherlands to catch a glimpse of the departure of Hr. Ms. K-XVII: A submarine of the Royal Dutch Navy setting sail on a trip around the world. Onboard was a unique traveler and with his non-typical height of 2 meters tall, he towered above the average submarine sailor. Professor Vening Me ...[Read More]

Geodesists on Tour: GPS measurements on Antarctica

and October 10, 2021
Geodesists on Tour: GPS measurements on Antarctica
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]