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

* Last revised: 15:46:03 04/26/22

**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****)
a23a37 59'W 74 51'S 113
a6460 19'W 65 56'S 115
a69a59 7'W 65 31'S 115
a69b57 1'W 64 48'S 115
a69c58 57'W 65 26'S 115
a7061 17'W 65 44'S 115
a7444 21'W 76 53'S 115
a76a55 45'W 67 34'S 115
a76b59 44'W 70 48'S 115
a76c60 5'W 68 57'S 115
a7729 52'W 75 41'S 115
a7832 45'W 73 2'S 115
a7960 28'W 71 6'S 115
b09b143 35'E 66 14'S 115
b09g41 47'E 68 12'S 115
b09i26 24'W 55 18'S 115
b15ab50 35'E 66 4'S 115
b22a109 28'W 73 48'S 115
b28109 24'W 74 22'S 115
b29109 41'W 74 12'S 115
b38155 6'W 77 0'S 115
b3933 4'W 76 41'S 115
b42152 0'W 69 8'S 115
b45109 35'W 74 31'S 115
b46132 29'W 72 0'S 115
b47134 10'W 73 48'S 115
b50165 9'W 65 39'S 115
c15143 16'E 65 57'S 115
c18b89 33'E 66 35'S 115
c21b95 51'E 64 59'S 115
c2496 1'E 64 50'S 115
c29142 46'E 66 3'S 115
c3096 16'E 64 46'S 115
c3196 30'E 64 41'S 115
c32132 48'E 66 3'S 115
c33126 34'E 65 19'S 115
c35147 50'E 67 20'S 115
c36147 28'E 67 55'S 115
c38a101 39'E 65 10'S 115
c38b101 42'E 65 0'S 115
d15a81 55'E 66 37'S 115
d15b81 34'E 66 58'S 115
d20a15 3'E 69 10'S 115
d2374 40'E 69 25'S 115
d2629 32'E 69 15'S 115
d2713 40'E 67 49'S 115
d2832 23'W 74 31'S 115
d29a36 41'W 72 3'S 115
d29b31 15'W 74 32'S 115
d29c35 33'W 72 45'S 115
d30a38 21'W 74 11'S 113
d30b33 50'W 73 46'S 113
d3121 44'W 73 8'S 113
uk324149 8'E 66 32'S 113

*** 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