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

* Last revised: 13:55:42 02/11/25

**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   Lattitude Most recent observation  
(day of year****)
a23a40 51'W 56 35'S 040
a74a55 13'W 64 42'S 040
a76c52 30'W 63 49'S 040
a7758 19'W 65 21'S 040
a80a56 39'W 63 48'S 040
a8158 51'W 69 23'S 040
a8290 41'W 68 49'S 040
a8332 28'W 76 38'S 040
b09b142 54'E 66 13'S 040
b09g41 42'E 68 12'S 040
b15ab55 56'W 67 26'S 040
b22a153 10'W 75 42'S 040
b22f150 3'W 74 57'S 040
b22g142 22'W 74 52'S 040
b29110 34'W 73 39'S 040
b47160 38'W 75 36'S 040
c15143 16'E 65 57'S 040
c18b78 9'E 67 9'S 040
c21b95 50'E 64 58'S 040
c2496 0'E 64 47'S 040
c29136 49'E 65 8'S 040
c3096 16'E 64 46'S 040
c3196 29'E 64 40'S 040
c33105 1'E 65 39'S 040
c35143 4'E 66 13'S 040
c36147 38'E 67 49'S 040
c3997 38'E 64 34'S 040
d15a81 55'E 66 37'S 040
d15b81 27'E 66 58'S 040
d2374 42'E 69 26'S 040
d30b45 35'W 60 38'S 040
d328 50'W 70 22'S 040
d33a56 49'W 70 8'S 040
d33b40 41'W 77 20'S 040
d3481 59'E 67 5'S 040
d3686 24'E 66 21'S 040
uk324149 2'E 67 13'S 040

*** 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
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