Calving cycle of Ninnis Glacier over the last 60 years

A Framework for Fracture Extraction Under Glaciological Property‐Based Constraints: Scientific Application on the Filchner–Ronne Ice Shelf of Antarctica

“…However, the average length of the fractures shows an opposite pattern, being shorter in the RIS with a length of ∼6.19 km and longer in the FIS with a length of ∼11.76 km. In the propagation process, the length of some of the fractures can reach tens or even hundreds of kilometers, eventually forming an iceberg's detachment boundary (Cheng, Xia, Qiao, Li, et al., 2021; Cheng, Xia, Qiao, Lv, et al., 2021; Fricker, 2005; Walker & Gardner, 2019). As Figure 9a indicates, the longest fractures throughout the ice shelf appear in band 4 of the RIS and bands 11 and 12 of the FIS, both near the front of the ice shelf.…”

“…Cheng, Xia, Qiao, Li, et al. (2021) and Cheng, Xia, Qiao, Lv, et al. (2021) extracted and analyzed a critical chasm in Brunt Ice Shelf from Landsat images and predicted its imminent calving.…”

“…This comes at the cost of efficiency, leading to hysteresis in monitoring the instability of large ice shelves. Given the current increasing instability of parts of the Antarctic ice shelves, such as the Pine Island, Thwaites, and Ninnis glaciers in West Antarctica (Cheng, Xia, Qiao, Li, et al., 2021; Cheng, Xia, Qiao, Lv, et al., 2021; Favier et al., 2014; Lhermitte et al., 2020), the Totten Glacier and Brunt Ice Shelf in East Antarctica (Cheng, Xia, Qiao, Li, et al., 2021; Cheng, Xia, Qiao, Lv, et al., 2021; X. Li et al., 2015; Rintoul Stephen et al., 2016) and the Larsen Ice Shelf in the Antarctic Peninsula (Khazendar et al., 2015; McGrath et al., 2012), we propose an automatic extraction framework to extract fractures with open source code and libraries. This framework can filter out most non‐fractures under the constraints of the glaciological property set by existing external data sets without any manual intervention.…”