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

* Last revised: 12:42:28 11/18/20

**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****)
a23a41 15'W 75 43'S 321
a6347 33'W 72 21'S 321
a6461 0'W 69 45'S 321
a68a41 42'W 56 14'S 321
a68c31 9'W 52 25'S 311
a69a59 29'W 68 39'S 321
a69b60 26'W 68 34'S 321
b09b143 1'E 66 9'S 321
b09g41 42'E 67 58'S 321
b09i37 28'W 70 57'S 321
b15ab51 2'E 66 2'S 321
b22a109 31'W 73 59'S 321
b28108 51'W 74 42'S 321
b29108 54'W 74 31'S 321
b37110 54'W 72 47'S 321
b38155 23'W 77 4'S 321
b3956 3'E 65 42'S 321
b40132 13'E 65 38'S 321
b41179 58'W 69 10'S 321
b42126 38'W 72 54'S 321
b45109 29'W 74 44'S 321
b46107 23'W 73 26'S 321
b47133 54'W 73 48'S 321
b50133 20'W 73 44'S 321
c15143 21'E 65 59'S 321
c18b100 5'E 64 58'S 321
c21b95 55'E 65 0'S 321
c2496 2'E 64 54'S 321
c29142 54'E 66 7'S 321
c3096 20'E 64 47'S 321
c3196 32'E 64 42'S 321
c32132 48'E 66 3'S 321
c33129 39'E 65 22'S 321
c3484 3'E 65 50'S 271
c35148 3'E 68 13'S 321
c36147 55'E 68 4'S 321
d15a81 48'E 66 34'S 321
d15b81 47'E 66 43'S 321
d20a36 16'E 68 38'S 321
d21b38 42'W 63 20'S 321
d2374 39'E 69 25'S 321
d2629 29'E 69 26'S 321
d2779 0'E 67 36'S 321
d2855 27'E 65 31'S 321
uk324148 53'E 66 32'S 321

*** 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)