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A feature known as Chasm 1 is prominent in the Landsat imagery. This crack reactivated in December 2012 after no movement for 35 years. The Landsat images show rapid growth of the chasm, especially in 2018 and 2019, as it extends toward the McDonald Ice Rumples.

In early 2019, Chasm 1 was extending north as fast as 4 kilometers per year, and from 2012 to 2021, the rift widened almost three-fold.

The time series of images also shows Chasm 1 moving westward with the flow of the ice shelf.

Imagery

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Dec. 13, 2002, Landsat 7 (path/row 184/114) — Chasm 1, Brunt Ice Shelf, Antarctica
Feb. 13, 2009, Landsat 7 (path/row 184/114) — Chasm 1, Brunt Ice Shelf, Antarctica
Dec. 1, 2013, Landsat 8 (path/row 184/114) — Chasm 1, Brunt Ice Shelf, Antarctica
Oct. 31, 2016, Landsat 8 (path/row 183/114) — Chasm 1, Brunt Ice Shelf, Antarctica
Dec. 21, 2017, Landsat 8 (path/row 183/114) — Chasm 1, Brunt Ice Shelf, Antarctica
Nov. 20, 2018, Landsat 8 (path/row 185/114) — Chasm 1, Brunt Ice Shelf, Antarctica
Oct. 31, 2019, Landsat 8 (path/row 184/114) — Chasm 1, Brunt Ice Shelf, Antarctica
Jan. 7, 2021, Landsat 8 (path/row 182/114) — Chasm 1, Brunt Ice Shelf, Antarctica
Dec. 25, 2021, Landsat 8 (path/row 182/114) — Chasm 1, Brunt Ice Shelf, Antarctica
Feb. 8, 2022, Landsat 9 (path/row 185/114) — Chasm 1, Brunt Ice Shelf, Antarctica

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