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

* Last revised: 07:52:00 01/26/21

**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 12'W 75 48'S 023
a6354 43'W 71 33'S 022
a6460 43'W 69 25'S 022
a68a34 57'W 56 46'S 019
a68d36 3'W 55 34'S 021
a68e35 24'W 53 10'S 019
a69a61 6'W 68 0'S 022
a69b61 0'W 67 36'S 022
a7059 41'W 72 29'S 022
a7159 37'W 72 30'S 022
a7260 51'W 69 40'S 022
a7360 37'W 69 51'S 022
b09b143 8'E 66 15'S 021
b09g41 42'E 67 58'S 023
b09i40 56'W 70 44'S 023
b15ab51 3'E 66 1'S 022
b22a109 31'W 73 56'S 023
b28108 46'W 74 40'S 023
b29108 54'W 74 31'S 023
b37111 42'W 72 42'S 023
b38155 23'W 77 3'S 023
b3952 17'E 65 30'S 022
b40132 15'E 65 35'S 021
b42126 32'W 72 48'S 023
b45109 29'W 74 44'S 023
b46110 10'W 72 33'S 023
b47133 49'W 73 48'S 023
b50138 13'W 73 39'S 023
c15143 3'E 66 2'S 021
c18b98 33'E 64 32'S 021
c21b95 49'E 64 57'S 021
c2496 5'E 64 50'S 021
c29143 4'E 66 7'S 021
c3096 20'E 64 43'S 021
c3196 30'E 64 40'S 021
c32132 48'E 66 3'S 021
c33128 16'E 65 7'S 020
c35147 51'E 68 2'S 021
c36147 36'E 67 56'S 021
d15a81 56'E 66 39'S 022
d15b81 34'E 66 57'S 022
d20a36 16'E 68 38'S 023
d21b33 29'W 61 15'S 019
d2374 39'E 69 25'S 022
d2629 28'E 69 26'S 023
d2778 23'E 67 42'S 022
d2853 24'E 65 19'S 022
uk324148 50'E 66 39'S 021

*** 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
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