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

* Last revised: 20:51:08 06/23/21

**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****)
a23a39 48'W 75 36'S 173
a6356 57'W 66 31'S 173
a6461 5'W 67 39'S 173
a69a60 55'W 67 30'S 173
a69b60 26'W 67 8'S 173
a7060 39'W 68 24'S 173
a7426 25'W 75 12'S 173
a76a58 58'W 75 0'S 173
a76b57 4'W 74 13'S 173
a76c56 30'W 74 40'S 173
b09b143 25'E 66 16'S 173
b09g41 50'E 68 12'S 173
b09i45 34'W 65 20'S 173
b15ab50 59'E 66 4'S 173
b22a109 32'W 73 52'S 173
b28108 46'W 74 40'S 173
b29108 54'W 74 31'S 173
b37112 25'W 72 25'S 173
b38155 13'W 77 2'S 173
b3914 30'E 69 8'S 173
b40132 11'E 65 37'S 173
b42138 1'W 74 13'S 173
b45109 20'W 74 40'S 173
b46114 21'W 72 43'S 173
b47133 52'W 73 46'S 173
b50154 16'W 75 43'S 173
c15143 17'E 65 58'S 173
c18b89 33'E 66 33'S 173
c21b95 49'E 64 58'S 173
c2496 1'E 64 50'S 173
c29142 51'E 66 4'S 173
c3096 18'E 64 46'S 173
c3196 32'E 64 40'S 173
c32132 48'E 66 3'S 173
c33126 40'E 65 27'S 173
c35147 47'E 67 18'S 173
c36147 28'E 67 56'S 173
d15a81 54'E 66 38'S 173
d15b81 34'E 66 57'S 173
d20a36 11'E 68 26'S 173
d2374 39'E 69 25'S 173
d2629 19'E 69 24'S 173
d2751 3'E 65 50'S 173
d2816 32'E 69 4'S 173
d29a18 3'E 69 34'S 173
d29b18 52'E 69 44'S 173
d29c16 30'E 69 6'S 173
d30a13 32'E 69 12'S 173
d30b16 59'E 69 34'S 173
uk324149 1'E 66 33'S 173

*** 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)