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

* Last revised: 23:41:47 01/05/21

**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****)
a23a41 16'W 75 50'S 004
a6353 37'W 71 44'S 004
a6460 52'W 69 36'S 365
a68a35 19'W 56 42'S 002
a68d36 34'W 55 26'S 002
a68e35 10'W 55 57'S 002
a68f34 11'W 56 47'S 364
a69a60 38'W 68 8'S 004
a69b61 6'W 67 51'S 004
b09b143 18'E 66 11'S 004
b09g41 42'E 67 58'S 004
b09i40 2'W 70 46'S 004
b15ab51 2'E 66 2'S 004
b22a109 31'W 73 56'S 004
b28108 51'W 74 42'S 004
b29108 54'W 74 31'S 004
b37111 40'W 72 42'S 004
b38155 23'W 77 4'S 004
b3954 19'E 65 8'S 002
b40132 19'E 65 35'S 003
b42126 42'W 72 53'S 004
b45109 29'W 74 44'S 004
b46109 15'W 72 33'S 004
b47133 46'W 73 47'S 004
b50138 4'W 73 47'S 004
c15143 8'E 65 57'S 004
c18b98 56'E 64 25'S 002
c21b95 55'E 65 0'S 004
c2495 54'E 64 57'S 002
c29143 4'E 65 58'S 004
c3096 21'E 64 43'S 004
c3196 32'E 64 42'S 002
c32132 48'E 66 3'S 003
c33128 45'E 65 13'S 001
c35148 8'E 68 7'S 004
c36147 55'E 68 4'S 004
d15a81 48'E 66 34'S 004
d15b81 30'E 66 54'S 004
d20a36 16'E 68 38'S 004
d21b34 22'W 61 35'S 001
d2374 39'E 69 25'S 004
d2629 28'E 69 26'S 004
d2778 34'E 67 35'S 004
d2853 48'E 65 21'S 004
uk324148 50'E 66 39'S 004

*** 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)