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

* Last revised: 14:49:42 04/03/26

**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****)
a23a30 0'W 48 23'S 090
a74a18 37'W 57 52'S 084
a76c36 37'W 59 15'S 089
a8157 12'W 64 49'S 091
a8290 39'W 68 49'S 091
a8351 48'W 67 3'S 091
a84104 52'W 72 27'S 091
a8557 35'W 68 10'S 091
b09b143 14'E 66 5'S 091
b09g41 31'E 68 13'S 091
b15ab32 49'W 51 51'S 086
b22a178 13'W 70 40'S 091
b22f179 34'E 67 22'S 091
b22g159 20'W 68 2'S 078
b22h179 27'E 72 33'S 091
b22i177 20'W 68 18'S 091
b29110 41'W 73 39'S 091
c15143 8'E 65 52'S 091
c18b47 33'E 67 3'S 091
c18c47 5'E 66 43'S 091
c21b95 53'E 64 58'S 091
c2496 1'E 64 50'S 091
c29129 5'E 65 25'S 056
c3096 16'E 64 46'S 091
c3196 30'E 64 43'S 091
c33103 48'E 65 22'S 091
c35142 57'E 66 13'S 091
c36146 34'E 67 29'S 091
c3975 32'E 69 14'S 091
d15a81 47'E 66 40'S 091
d15b81 27'E 67 1'S 091
d15c80 26'E 66 51'S 091
d2374 42'E 69 26'S 091
d30b45 36'W 60 35'S 088
d3246 45'W 66 3'S 091
d33a57 51'W 65 12'S 091
d33b52 25'W 67 4'S 091
d33c57 30'W 65 28'S 091
d3481 55'E 67 6'S 091
d3548 19'W 65 18'S 091
d3686 47'E 66 15'S 091
d3736 20'E 69 12'S 091
uk324149 0'E 66 58'S 075
uk32743 57'W 65 22'S 091
uk328149 28'E 66 18'S 086

*** 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)