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

* Last revised: 13:43:27 03/11/26

**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 48'W 52 28'S 042
a74a54 8'W 61 15'S 066
a76c37 7'W 59 11'S 066
a7741 54'W 56 58'S 305
a80a54 11'W 61 23'S 246
a8158 5'W 64 43'S 066
a8290 45'W 68 51'S 066
a8351 55'W 67 32'S 066
a84103 59'W 72 37'S 063
a8557 4'W 68 19'S 066
b09b143 25'E 66 7'S 066
b09g41 36'E 68 11'S 063
b15ab33 56'W 53 32'S 063
b22a178 49'W 70 39'S 066
b22f178 45'W 67 13'S 066
b22g159 57'W 68 28'S 066
b22h178 42'W 71 55'S 066
b22i178 4'W 69 14'S 066
b29110 45'W 73 40'S 066
b47176 53'W 67 10'S 323
c15143 30'E 65 55'S 066
c18b49 52'E 66 19'S 066
c18c51 39'E 65 43'S 063
c21b95 49'E 64 58'S 066
c2496 1'E 64 50'S 066
c29129 5'E 65 25'S 056
c3096 16'E 64 46'S 066
c3196 30'E 64 43'S 066
c33103 59'E 65 21'S 066
c35142 54'E 66 20'S 056
c36147 28'E 67 53'S 066
c3977 33'E 67 43'S 066
d15a81 47'E 66 40'S 066
d15b81 28'E 66 59'S 066
d15c80 58'E 66 49'S 066
d2374 42'E 69 26'S 066
d30b45 27'W 60 37'S 064
d3242 56'W 66 6'S 063
d33a57 52'W 65 30'S 066
d33b52 36'W 67 45'S 066
d33c58 28'W 65 53'S 066
d3481 55'E 67 6'S 066
d3548 17'W 65 57'S 066
d3686 47'E 66 15'S 066
d3736 20'E 69 12'S 066
uk324148 54'E 67 3'S 066
uk32745 52'W 65 21'S 066

*** 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)