The GlobalMass team has had a new open-access paper published in Geophysical Journal International: ‘A new global GPS data set for testing and improving modelled GIA uplift rates‘.
Glacial isostatic adjustment (GIA) is the ongoing response of the Earth’s surface following the last ice age around 20,000 years ago. It is a process that continues today and which consequently is recorded by GPS stations worldwide. However, these GPS stations also measure other causes of vertical land motion such as earthquakes and local land subsidence due to water extraction. The paper presents a new method that we have developed to identify and remove non-GIA signals from GPS data, to leave a ‘clean’ data set of vertical land motion that we can assume is primarily due to GIA.
A plain language summary is available here.
The ‘clean’ GPS data set we produced is available to download from Pangaea.
Schumacher M, King MA, Rougier J, Sha Z, Khan SA and Bamber JL (2018) A new global GPS data set for testing and improving modelled GIA uplift rates, Geophysical Journal International 214(3), 2164-2176 (DOI: 10.1093/gji/ggy235 ).