Abstract
Warming ocean currents are considered to be a contributing factor to the retreat of marine-terminating glaciers worldwide, but direct observations near the ice–ocean interface are challenging. We use radar intensity imagery and an iceberg tracking algorithm to produce half-hourly current maps within an imaged portion of Jökulsárlón, a proglacial lagoon in southeastern Iceland. Over our 43.5-h observation period, the lagoon has clockwise circulation with current speeds of order 3–8 cm/s and occasional strong glacier outflows of up to ∼15 cm/s. The currents driven by the glacial outflows appear to be dominantly inertial.
Original language | American English |
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Journal | Computers & Geosciences |
Volume | 82 |
DOIs | |
State | Published - Sep 1 2015 |
Keywords
- Terrestrial radar interferometry
- Iceberg tracking
- Inertial currents
Disciplines
- Earth Sciences