Current Antarctic Iceberg Positions

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

* Last revised: 12:06:11 05/21/21

**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****)
a23a	40 21'W	75 40'S	131
a63	56 32'W	68 3'S	131
a64	61 12'W	67 56'S	131
a69a	61 2'W	67 35'S	131
a69b	60 46'W	67 14'S	131
a70	60 33'W	69 23'S	131
a71	60 41'W	70 12'S	117
a74	26 17'W	75 16'S	131
a75	60 2'W	71 59'S	131
a76	59 3'W	75 9'S	139
b09b	143 25'E	66 16'S	125
b09g	41 43'E	68 13'S	131
b09i	45 40'W	67 20'S	131
b15ab	51 5'E	66 2'S	131
b22a	109 25'W	73 54'S	131
b28	108 46'W	74 40'S	131
b29	108 54'W	74 31'S	131
b37	112 16'W	72 31'S	131
b38	155 17'W	77 3'S	131
b39	32 25'E	68 31'S	131
b40	132 11'E	65 37'S	131
b42	134 53'W	73 37'S	131
b45	109 21'W	74 42'S	131
b46	113 15'W	72 18'S	131
b47	133 52'W	73 46'S	131
b50	146 35'W	74 32'S	131
c15	143 17'E	65 58'S	131
c18b	89 33'E	66 33'S	131
c21b	95 50'E	65 2'S	131
c24	96 1'E	64 50'S	131
c29	142 53'E	66 3'S	131
c30	96 18'E	64 46'S	131
c31	96 32'E	64 40'S	131
c32	132 48'E	66 3'S	131
c33	126 40'E	65 27'S	131
c35	147 53'E	67 24'S	131
c36	147 26'E	67 55'S	131
d15a	81 56'E	66 40'S	131
d15b	81 34'E	66 57'S	131
d20a	36 13'E	68 27'S	131
d21b	25 42'W	57 2'S	131
d23	74 39'E	69 25'S	131
d26	29 24'E	69 21'S	131
d27	61 53'E	66 35'S	131
d28	33 16'E	68 9'S	131
uk324	148 57'E	66 34'S	131

*** 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)