Table 1 Glacier surface elevation and volume change between 1968–2001 (pre-collapse), 2001–2021, and 1968–2021 (net) over the measured grounded ice area.
From: High-resolution elevation models of Larsen B glaciers extracted from 1960s imagery
Measurement area | Surface elevation change | Volume change | |||
|---|---|---|---|---|---|
(km2) | Mean ± 2σ (m) | (km3) | Mass equivalent ± 2σ (Gt) | Sea-level rise equivalent (mm) | |
1968–2001 | |||||
Jorum | 133.7 ± 0.9 | 1.4 ± 5.6 | 0.2 ± 0.8 | 0.2 ± 0.7 | 0.000 ± 0.002 |
Crane* | 242.1 ± 1.1 | 6.2 ± 4.1 | 1.5 ± 1.0 | 1.4 ± 0.9 | − 0.004 ± 0.003 |
Mapple | 110.7 ± 0.9 | 6.5 ± 6.1 | 0.7 ± 0.7 | 0.7 ± 0.6 | − 0.002 ± 0.002 |
Melville | 189.6 ± 1.2 | 7.4 ± 4.7 | 1.4 ± 0.9 | 1.3 ± 0.8 | − 0.004 ± 0.002 |
Flask* | 461.1 ± 1.9 | 10.6 ± 2.1 | 4.9 ± 1.0 | 4.5 ± 0.9 | − 0.012 ± 0.003 |
Total* | 8.7 ± 1.9 | 8.1 ± 1.8 | − 0.022 ± 0.005 | ||
2001–2021 | |||||
Jorum | 133.7 ± 0.9 | − 36.4 ± 4.9 | − 4.9 ± 0.7 | − 4.5 ± 0.6 | 0.012 ± 0.002 |
Crane* | 242.1 ± 1.1 | − 89.9 ± 3.6 | − 21.8 ± 0.9 | − 20.0 ± 0.8 | 0.055 ± 0.002 |
Mapple | 110.7 ± 0.9 | − 11.4 ± 5.4 | − 1.3 ± 0.6 | − 1.2 ± 0.6 | 0.003 ± 0.002 |
Melville | 189.6 ± 1.2 | − 12.4 ± 4.1 | − 2.3 ± 0.8 | − 2.1 ± 0.7 | 0.006 ± 0.002 |
Flask* | 461.1 ± 1.9 | − 14.8 ± 2.6 | − 6.8 ± 1.2 | − 6.3 ± 1.1 | 0.017 ± 0.003 |
Total* | − 37.1 ± 1.9 | − 34.1 ± 1.7 | 0.093 ± 0.005 | ||
Net 1968–2021 | |||||
Jorum | 133.7 ± 0.9 | − 35.0 ± 3.3 | − 4.7 ± 0.5 | − 4.3 ± 0.4 | 0.012 ± 0.001 |
Crane | 518.7 ± 1.6 | − 58.1 ± 1.7 | − 30.2 ± 0.9 | − 27.7 ± 0.8 | 0.076 ± 0.002 |
Mapple | 110.7 ± 0.9 | − 5.8 ± 3.6 | − 0.6 ± 0.4 | − 0.6 ± 0.4 | 0.002 ± 0.001 |
Melville | 189.6 ± 1.2 | − 5.6 ± 3.6 | − 1.1 ± 0.5 | − 1.0 ± 0.5 | 0.003 ± 0.001 |
Flask | 635.1 ± 2.2 | − 2.9 ± 0.8 | − 1.8 ± 0.6 | − 1.7 ± 0.5 | 0.005 ± 0.001 |
Total | 38.4 ± 1.4 | 35.3 ± 1.2 | 0.098 ± 0.003 | ||
