Publications

10981 to 10992 of 13722 results

1. Rapid climate change: lessons from the recent geological past

   Rapid, or abrupt, climate change is regarded as a change in the climate system to a new state following the crossing of a threshold. It generally occurs at a rate […]

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2. Seasonal patterns of prolactin and corticosterone secretion in an Antarctic seabird that moults during reproduction

   In avian species that have evolved life-history strategies wherein molt and breeding overlap, there are potential conflicts between the regulatory roles of baseline prolactin and corticosterone in parental care (positive) […]

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3. Cellular biomarkers to elucidate global warming effects on Antarctic sea urchin Sterechinus neumayeri

   Global warming is a reality and its effects have been widely studied. However, the consequences for marine invertebrates remain poorly understood. Thus, the present study proposed to evaluate the effect […]

   Read more of: Cellular biomarkers to elucidate global warming effects on Antarctic sea urchin Sterechinus neumayeri

4. Abrupt changes in high-latitude nutrient supply to the Atlantic during the last glacial cycle

   The supply of nutrients to the low-latitude thermocline is largely controlled by intermediate- depth waters formed at the surface in the high southern latitudes. Silicic acid is an essential macronutrient […]

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5. Evidence for hydrothermal venting and sediment volcanism discharged after recent short-lived volcanic eruptions at Deception Island, Bransfield Strait, Antarctica

   The results of a combined geophysical and geochemical research programme on Deception Island, an active volcano at 62degrees43’S, 60degrees57’W in Bransfield Strait (Antarctica), are presented. Ultrahigh-resolution acoustic data obtained with […]

   Read more of: Evidence for hydrothermal venting and sediment volcanism discharged after recent short-lived volcanic eruptions at Deception Island, Bransfield Strait, Antarctica

6. Mitochondrial DNA sequence evidence supporting the recognition of a new North Atlantic Pseudostichopus species (Echinodermata : Holothuroidea)

   A new species of the synallactid sea cucumber genus Pseudostichopus is described, P. aemaulatus sp. nov., based on genetic (DNA sequences of the mitochondrial gene Cytochrome Oxidase I [COI] gene) […]

   Read more of: Mitochondrial DNA sequence evidence supporting the recognition of a new North Atlantic Pseudostichopus species (Echinodermata : Holothuroidea)

7. Differences in ground-observed chorus in geomagnetic storms with and without enhanced relativistic electron fluxes

   [ 1] It has been suggested that whistler mode chorus waves play a role in the acceleration and loss of radiation belt electrons during geomagnetic storms. In a previous statistical […]

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8. Ground observations of chorus following geomagnetic storms

   [1] It has been suggested that whistler mode chorus waves play a role in acceleration and loss of radiation belt electrons during geomagnetic storms. In this paper we present data […]

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9. Frazil ice formation in an ice shelf water plume

   [1] We present a model for the growth of frazil ice crystals and their accumulation as marine ice at the base of Antarctic ice shelves. The model describes the flow […]

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10. Meteor radar observations at middle and Arctic latitudes. Part 1: Mean temperatures

    Observations with a Meteor radar operating at 32.55 MHz have been used to derive daily atmospheric temperature data for an altitude of 90 km at mid-latitudes during November 1999 until […]

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11. Global and hemispheric climate variations affecting the Southern Ocean

    The hemispheric and regional atmospheric circulation influences the Southern Ocean in many and profound ways, including intense air-sea fluxes of momentum, energy, fresh water and dissolved gases. The Southern Ocean […]

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12. Ice flow direction change in interior West Antarctica

    Upstream of Byrd Station (West Antarctica), ice-penetrating radar data reveal a distinctive fold structure within the ice, in which isochronous layers are unusually deep. The fold has an axis more […]

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