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

* Last revised: 15:11:21 06/18/21

**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 57'W 75 38'S 168
a6357 4'W 66 36'S 168
a6461 9'W 67 41'S 168
a69a60 55'W 67 30'S 168
a69b60 26'W 67 8'S 168
a7060 45'W 68 25'S 168
a7426 25'W 75 12'S 168
a7560 9'W 70 25'S 168
a76a59 0'W 75 2'S 168
a76b57 46'W 74 42'S 168
a76c56 34'W 74 58'S 168
b09b143 25'E 66 16'S 168
b09g41 50'E 68 12'S 168
b09i45 24'W 65 44'S 168
b15ab50 59'E 66 4'S 168
b22a109 32'W 73 52'S 168
b28108 46'W 74 40'S 168
b29108 54'W 74 31'S 168
b37112 25'W 72 25'S 168
b38155 13'W 77 2'S 168
b3916 28'E 69 28'S 168
b40132 11'E 65 37'S 168
b42138 1'W 74 13'S 168
b45109 20'W 74 40'S 168
b46114 11'W 72 33'S 168
b47133 52'W 73 46'S 168
b50153 20'W 75 34'S 168
c15143 17'E 65 58'S 168
c18b89 33'E 66 33'S 168
c21b95 49'E 64 58'S 168
c2496 1'E 64 50'S 168
c29142 51'E 66 4'S 168
c3096 18'E 64 46'S 168
c3196 32'E 64 40'S 168
c32132 48'E 66 3'S 168
c33126 40'E 65 27'S 168
c35147 55'E 67 20'S 168
c36147 28'E 67 56'S 168
d15a81 54'E 66 38'S 168
d15b81 34'E 66 57'S 168
d20a36 11'E 68 26'S 168
d2374 39'E 69 25'S 168
d2629 19'E 69 24'S 168
d2752 39'E 65 33'S 168
d2817 39'E 69 19'S 168
d29a19 4'E 69 37'S 168
d29b20 0'E 69 47'S 168
d29c18 37'E 69 30'S 168
d30a15 49'E 69 11'S 168
d30b17 52'E 69 39'S 168
uk324149 2'E 66 34'S 168

*** 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