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Anomalous atmospheric circulation over the Weddell Sea, Antarctica during the austral summer of 2001/02 resulting in extreme sea ice conditions

1 December, 2002 by Gareth Marshall, John King, John Turner, Steve Colwell

During the Austral summer of 2001/02 exceptionally heavy sea ice conditions were experienced over the eastern Weddell Sea. Satellite microwave imagery showed that large negative (positive) ice anomalies were present…

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A statistical study of the Doppler spectral width of high-latitude ionospheric F-region echoes recorded with SuperDARN coherent HF radars

30 November, 2002 by Michael Pinnock

The HF radars of the Super Dual Auroral Radar Network (SuperDARN) provide measurements of the E ×B drift of ionospheric plasma over extended regions of the high-latitude ionosphere. We have…

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Signatures of the midnight open-closed magnetic field line boundary during balanced dayside and nightsife reconnection

31 October, 2002 by Michael Pinnock

The geomagnetic conditions were moderately disturbed (Kp = 2) during magnetic midnight on 10 December 1999, when the Tasman International Geospace Environment Radar (TIGER), a Southern Hemisphere HF SuperDARN radar,…

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Throwing light on straddling stocks of Illex argentinus: assessing fishing intensity with satellite imagery

1 April, 2002 by Claire Waluda, Paul Rodhouse, Philip Trathan

Marine fisheries provide around 20% of animal protein consumed by man worldwide, but ineffective management can lead to commercial extinction of exploited stocks. Fisheries that overlap nationally controlled and high…

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A statistical analysis of ionospheric velocity and magnetic field power spectra at the time of pulsed ionospheric flows

1 January, 2002 by Mervyn Freeman

[1] We analyze the power spectrum of the line-of-sight ionospheric velocity measured by the SuperDARN CUTLASS Finland radar and of contemporaneous magnetic field perturbations measured by nearby IMAGE magnetometers. The…

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Clade perseverance from mesozoic to present: a multidisciplinary approach to interpretation of pattern and process

1 January, 2002 by David Barnes

Two clades of marine bryozoans, cyclostomes and cheilostomes, exemplify the benefits of applying a multidisciplinary approach to the interpretation of long-term evolutionary patterns. The cyclostome bryozoans were dominant in the…

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Significant intra-annual variability in krill distribution and abundance at South Georgia revealed by multiple acoustic surveys during 2000/01

1 January, 2002 by Jonathan Watkins, Jeremy Robst, Mark Belchier, Vsevolod Afanasyev

Three separate acoustic surveys of Antarctic krill (Euphausia superba) were conducted around South Georgia in the 2000/01 season: in October 2000 (early-season); during late December/early January 2000/01 (mid-season), and in…

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Sedimentation associated with Antarctic Peninsula ice shelves: implications for palaeoenvironmental reconstructions of glacimarine sediments

1 January, 2002

Recent disintegration of a number of Antarctic Peninsula ice shelves has given us a unique opportunity to investigate sub-ice-shelf sediments. We characterize three sediment facies associations of two Antarctic Peninsula…

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A window on West Antarctic crustal boundaries: the junction between the Antarctic Peninsula, the Filchner Block, and Weddell Sea oceanic lithosphere

1 January, 2002 by Ed King

A new airborne magnetic survey of the southeastern Antarctic Peninsula and adjacent Weddell Sea embayment (WSE) region suggests a continuity of geological structure between the eastern Antarctic Peninsula and the…

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Low-temperature protein metabolism: seasonal changes in protein synthesis and RNA dynamics in the Antarctic limpet Nacella concinna Strebel 1908

1 January, 2002 by Andrew Clarke, Lloyd Peck

Protein synthesis is a fundamental and energetically expensive physiological process in all living organisms. Very few studies have examined the specific challenges of manufacturing proteins at low ambient temperatures. At…

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Seasonal factors affecting surfactant biodegradation in Antarctic coastal waters: comparison of a polluted and pristine site

1 January, 2002

This report is the first seasonal study of anthropogenic pollutant biodegradation rates in Antarctic coastal waters. The capacity of surface waters from Rothera Research Station, Adelaide Island, Antarctica, to biodegrade…

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