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

* Last revised: 22:55:04 05/29/21

**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****)
a23a40 13'W 75 44'S 148
a6356 43'W 67 29'S 148
a6461 11'W 67 52'S 148
a69a60 51'W 67 34'S 148
a69b60 26'W 67 12'S 148
a7060 35'W 69 0'S 148
a7160 39'W 69 6'S 148
a7426 26'W 75 13'S 148
a7559 59'W 71 10'S 148
a76a59 25'W 75 6'S 148
a76b57 29'W 75 5'S 148
a76c57 2'W 75 34'S 148
b09b143 25'E 66 16'S 148
b09g41 47'E 68 11'S 146
b09i44 29'W 66 37'S 148
b15ab50 59'E 66 4'S 148
b22a109 25'W 73 54'S 148
b28108 46'W 74 40'S 148
b29108 54'W 74 31'S 148
b37112 1'W 72 24'S 148
b38155 17'W 77 3'S 148
b3927 11'E 69 38'S 143
b40132 11'E 65 37'S 148
b42135 15'W 73 53'S 148
b45109 21'W 74 42'S 148
b46112 31'W 72 7'S 148
b47133 52'W 73 46'S 148
b50147 57'W 74 59'S 148
c15143 17'E 65 58'S 148
c18b89 33'E 66 33'S 148
c21b95 50'E 65 2'S 148
c2496 1'E 64 50'S 148
c29142 50'E 66 4'S 148
c3096 18'E 64 46'S 148
c3196 32'E 64 40'S 148
c32132 48'E 66 3'S 148
c33126 40'E 65 27'S 148
c35147 56'E 67 22'S 148
c36147 26'E 67 55'S 148
d15a81 56'E 66 40'S 148
d15b81 34'E 66 57'S 148
d20a36 13'E 68 27'S 148
d2374 39'E 69 25'S 148
d2629 24'E 69 21'S 148
d2758 31'E 66 24'S 148
d2826 53'E 69 35'S 148
uk324148 57'E 66 34'S 148

*** 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)