Massive iceberg almost four times the size of Delhi, breaks off from Antarctica

Iceberg A-83, spanning 380 square kilometers—four times the size of New Delhi—broke away from Antarctica, marking the third significant calving event in four years. This separation resulted from the gradual weakening of the McDonald Ice Rumples and the eastward spread of the "Halloween Crack." Previous icebergs A-74 and A-81 calved in 2021 and 2023, respectively. Radar images from Copernicus Sentinel-1 and temperature data from Landsat 8 revealed the iceberg's size and thickness. Glaciologist Jane Smith noted that temperature differences help pinpoint the calving line. Though not threatening the nearby Halley VI Research Station, this event underscores the importance of satellite monitoring to understand the impact of climate change on Antarctic ice shelves.