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

* Last revised: 11:27:55 07/21/26

**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****)
a76c31 41'W 52 29'S 200
a8153 34'W 61 6'S 198
a8350 50'W 62 32'S 199
a84107 12'W 71 43'S 200
a8553 34'W 65 4'S 200
b09b143 14'E 66 5'S 200
b09g41 31'E 68 12'S 200
b22a174 9'E 69 2'S 200
b22f178 14'W 66 38'S 200
b22h164 10'E 70 9'S 200
b29110 52'W 73 43'S 200
b51131 32'W 74 11'S 200
c15143 5'E 65 50'S 200
c18b47 21'E 67 4'S 200
c18c39 4'E 68 30'S 200
c21b95 53'E 64 58'S 200
c2496 1'E 64 50'S 200
c3096 16'E 64 46'S 200
c3196 30'E 64 43'S 200
c33101 12'E 65 13'S 200
c35143 1'E 66 15'S 200
c36146 30'E 67 28'S 200
c3962 47'E 66 37'S 200
d15a81 47'E 66 40'S 200
d15b81 28'E 67 1'S 200
d15c79 30'E 67 13'S 200
d15d79 11'E 67 18'S 200
d2374 37'E 69 28'S 200
d30b45 43'W 60 34'S 200
d3238 51'W 60 45'S 200
d33a55 27'W 63 54'S 200
d33b51 38'W 61 32'S 199
d33c53 10'W 63 9'S 199
d3481 55'E 67 6'S 200
d3544 54'W 61 55'S 200
d3686 46'E 66 16'S 200
d3736 20'E 69 12'S 200
uk324148 47'E 66 57'S 200

*** 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)