HiRISE | Becquerel Crater Dune and Yardang Interactions (ESP_034419_2015)
http://www.uahirise.org/ESP_034419_2015
The creation of digital terrain models (DTMs) is an integral part of studying dune activity on Mars. They are used to determine dune heights
and for precisely tying annual monitoring images to the DTM (called orthorectifying) for more accurate dune displacement calculations.
HiRISE DTMs of Becquerel Crater, located in Arabia Terra, are especial helpful for understanding dune-topography interactions. A dune field
can be seen lining the north and south edges of the crater’s interior layered deposit. The summit of the deposit reaches 700 meters above
the crater floor. Additionally, multiple erosional features can be observed on the surface of the deposit including: staircase weathering,
knobs, and yardangs.
![](http://lh3.googleusercontent.com/-2HGFEww1rIY/V776QJnyo4I/AAAAAAABc48/PUs2ca70DdkKlYNLNpuQPUQ0fpHfIz1sQCL0B/w1007-h755-no/Becquerel%2BCrater%2BDune%2Band%2BYardang%2BInteractions.jpg)