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

* Last revised: 15:31:32 11/11/21

**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 13'W 75 48'S 312
a6350 47'W 63 7'S 312
a6460 39'W 67 18'S 312
a69a60 0'W 67 1'S 312
a69b59 44'W 66 48'S 312
a69c59 33'W 66 46'S 311
a7060 9'W 67 22'S 312
a7434 20'W 77 4'S 312
a76a59 19'W 72 59'S 312
a76b59 46'W 73 58'S 312
a76c59 59'W 70 43'S 312
a7727 12'W 74 12'S 312
a784 39'W 70 13'S 312
b09b143 24'E 66 16'S 314
b09g41 47'E 68 12'S 314
b09i33 31'W 60 6'S 314
b15ab50 36'E 66 5'S 314
b22a109 32'W 73 52'S 314
b28108 46'W 74 40'S 314
b29108 54'W 74 29'S 314
b37113 32'W 72 18'S 314
b38155 13'W 77 4'S 314
b3926 16'W 73 56'S 314
b40132 13'E 65 36'S 314
b42149 44'W 72 13'S 314
b45109 20'W 74 40'S 314
b46133 28'W 72 7'S 314
b47133 54'W 73 51'S 314
b50166 19'W 69 46'S 314
c15143 16'E 65 58'S 314
c18b89 33'E 66 35'S 314
c21b95 49'E 64 58'S 314
c2496 1'E 64 50'S 314
c29142 49'E 66 4'S 314
c3096 18'E 64 46'S 314
c3196 32'E 64 40'S 314
c32132 48'E 66 3'S 314
c33126 41'E 65 25'S 314
c35147 48'E 67 17'S 314
c36147 28'E 67 56'S 314
d15a81 54'E 66 38'S 314
d15b81 34'E 66 57'S 314
d20a28 26'E 69 15'S 314
d2374 39'E 69 25'S 314
d2629 19'E 69 23'S 314
d2731 53'E 68 34'S 314
d2818 11'W 72 17'S 314
d29a20 9'W 72 47'S 314
d29b8 32'W 70 24'S 314
d29c17 33'W 72 22'S 314
d30a26 4'W 73 38'S 314
d30b14 58'W 71 31'S 314
uk324148 56'E 66 33'S 314

*** 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