Geodetic glacier mass balance from historical images and Lidar data, and glacier modelling

In response to global atmospheric warming, glaciers have undergone a worldwide retreat and severe mass loss, especially in the Alps. Multi-temporal digital elevation models (DEMS) are widely used to estimate elevation change and thus glacier volume and mass changes (geodetic method).

In this project you will derive glacier mass change of an Alpine Glacier from multi-temporal DEMs and, if of interest, feed the results into a glacier model to model the annual glacier mass changes. You will work with a unique dataset of high-resolution DEMs (1m) derived from historical aerial images as well as recent DEMs from digital images and Lidar spanning twelve periods from 1953 to 2017.

The glacier is the second-largest glacier in Austria. If it is of interest to you, historical images can be reprocessed and spy satellite images are also available in the same catchment area and need to be processed. In addition, it is necessary to improve the quality of the DEM as co-registration and gap filling.

The work includes DEM analysis and analysis of glacier elevation and mass change and glacier modelling. Optional: geometric processing of historical satellite and aerial photos, DEM co-registration and gap filling.

Image may contain: Mountain, Slope, World, Black-and-white, Bedrock.
Fig. 1: Gepatch glacier in the Kaunertal catchment area (Austria). Left, 1920 and 2017 views of the glacier forefield, and right, a 1990 aerial orthophoto from a film camera. Click here for a bigger version.

 

Tags: DEM, the Alps, glacier elevation
Published Oct. 14, 2021 4:02 PM - Last modified Oct. 15, 2021 9:24 AM

Scope (credits)

60