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Current* Antarctic large iceberg positions derived from ASCAT and OSCAT-2**

* Last revised: 15:18:06 04/24/26

**Operational users please note: This list cannot possibly contain all potentially hazardous icebergs in Antarctic waters -- Scatterometers such as ASCAT and OSCAT-2 were designed for measuring ocean winds, not icebergs. Scatterometer data is useful for tracking icebergs, but is limited. During the Austral summer contrast between ocean and melting icebergs is reduced, which can result in gaps in visibility. Futher, as the SCP team is not an operational agency, errors are expected and we cannot be held responsible for omissions or errors in this database. Also note that the large icebergs tracked here tend to shed smaller iceberg fragments which are serious navigation hazards in nearby areas. Fragments (large and small) can drift substantial distances from their origins.

This information supplements the Antarctic Iceberg dataset maintained by the U.S. National Ice Center (NIC). If an inconsistency is observed, we recommend that NIC be considered authoritative.

This page is typically updated once or twice a week, typically on Mondays and possibly Fridays. Positions reported here are extracted from near real-time ASCAT and OSCAT-2 data in tandem. Positions reported in the full iceberg database are generated from science data and have been more accurately tracked. The full database is updated only a few times per year

 
Iceberg***   Longitude   Latitude Most recent observation  
(day of year****)
a74a18 49'W 58 7'S 093
a76c36 11'W 58 39'S 112
a8156 18'W 64 41'S 112
a8290 37'W 68 49'S 112
a8353 2'W 66 59'S 112
a84106 35'W 73 27'S 112
a8557 44'W 68 3'S 112
b09b143 14'E 66 5'S 112
b09g41 34'E 68 13'S 112
b22a178 24'W 70 35'S 112
b22f179 46'W 67 7'S 112
b22g159 9'W 67 13'S 112
b22h176 22'E 72 7'S 112
b22i178 38'W 68 22'S 112
b29110 41'W 73 39'S 112
c15143 8'E 65 52'S 112
c18b47 21'E 66 58'S 112
c18c39 6'E 68 29'S 112
c21b95 53'E 64 58'S 112
c2496 1'E 64 50'S 112
c3096 16'E 64 46'S 112
c3196 30'E 64 43'S 112
c33101 16'E 65 13'S 112
c35142 57'E 66 13'S 112
c36146 34'E 67 29'S 112
c3974 58'E 69 9'S 112
d15a81 47'E 66 40'S 112
d15b81 27'E 67 1'S 112
d15c80 3'E 67 4'S 112
d2374 42'E 69 26'S 112
d30b45 33'W 60 36'S 112
d3247 35'W 66 22'S 112
d33a57 42'W 65 4'S 112
d33b53 43'W 66 59'S 112
d33c58 12'W 65 36'S 111
d3481 55'E 67 6'S 112
d3548 47'W 65 17'S 112
d3686 47'E 66 15'S 112
d3736 20'E 69 12'S 112
uk324148 44'E 67 2'S 112
uk32744 33'W 65 20'S 105
uk328149 20'E 66 15'S 112

*** National Ice Center (NIC) iceberg designations are used where possible. Additional fragments are numbered. Icebergs not designated by NIC are denoted as "uk". Fragments not separately tracked by NIC may have additional numbers following their designation.

**** UTC day-of-year. Day of year chart

BYU Antarctic Iceberg Database - Comprehensive historic database of Antarctic iceberg positions derived from enhanced resolution scatterometer image time series spanning from 1978 through the present.

Selected papers on scatterometer iceberg tracking:
Paper (2.1MB pdf) K.M. Stuart and D.G. Long, "Tracking large tabular icebergs using the SeaWinds Ku-band microwave scatterometer", Deep-Sea Research Part II, doi:10.1016/j.dsr2.2010.11.004, Vol. 59, pp. 1285-1300, 2011.
Paper (620 kB pdf) D.G. Long, Jarom Ballantyne, and C. Bertoia, "Is the Number of Icebergs Really Increasing?" EOS, Transactions of the American Geophysical Union, Vol. 83, No. 42, pp 469 & 474, 15 Oct. 2002)