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

* Last revised: 15:58:53 11/10/23

**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****)
a23a51 31'W 63 15'S 312
a74a55 8'W 71 32'S 312
a74b54 50'W 68 34'S 312
a76b58 25'W 65 18'S 312
a76c59 31'W 65 26'S 312
a7754 57'W 72 32'S 312
a7833 1'W 60 55'S 312
a80a57 22'W 65 36'S 312
a80d57 20'W 65 35'S 312
a8149 21'W 76 27'S 312
b09b143 25'E 66 10'S 312
b09g41 44'E 68 11'S 312
b15ab15 55'W 72 11'S 302
b22a113 36'W 71 44'S 312
b29110 38'W 73 44'S 312
b38155 16'W 76 47'S 312
b3954 45'W 71 5'S 312
b45113 4'W 72 17'S 312
b46146 13'W 64 17'S 312
b47134 3'W 73 53'S 312
c15143 10'E 65 55'S 312
c18b81 39'E 65 46'S 312
c21b95 51'E 64 59'S 312
c2496 1'E 64 50'S 312
c29142 45'E 66 3'S 312
c3096 19'E 64 46'S 312
c3196 30'E 64 40'S 312
c33125 4'E 65 13'S 312
c35142 59'E 66 16'S 312
c36147 27'E 67 54'S 312
c38b98 33'E 64 51'S 312
c3998 18'E 64 40'S 312
d15a81 54'E 66 37'S 312
d15b81 34'E 66 58'S 312
d20a51 48'W 66 20'S 231
d2374 42'E 69 25'S 312
d2745 45'W 71 7'S 312
d2841 25'W 55 40'S 312
d29a25 26'W 58 45'S 312
d29b46 40'W 58 7'S 312
d29c35 58'W 60 49'S 312
d30a47 11'W 57 10'S 312
d30b45 43'W 60 34'S 312
d3137 19'W 60 12'S 312
d3255 33'E 65 36'S 312
d33a7 26'E 69 33'S 312
d33b11 0'E 69 35'S 312
d3482 6'E 67 9'S 312
uk324148 40'E 66 40'S 312

*** 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