Publications

7189 to 7200 of 14024 results

1. High-resolution vector velocity determinations from the dynasonde

   Line-of-sight Doppler velocity V∗ and three-dimensional apparent echolocation (XL, YL, ZL), are among the principal parameters available for each ionospheric echo from most observing modes of the dynasonde. An ensemble […]

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2. An Automatic Respirometer for use with Small Invertebrates

   1. An automatic respirometer is described which has been developed to measure the rate of oxygen consumption by small arthropods in closed chambers. 2. The instrument removes 0.5 mul subsamples […]

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3. Antarctic snow record of southern hemisphere lead pollution

   Lead concentrations from an Antarctic snow pit show the pattern of Pb reaching the Antarctic atmosphere over the last 70 years. Between 1920 and 1950, the Pb concentration shows significant […]

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4. Capture and scanning electron microscopy of individual snow crystals

   A snow crystal has been successfully collected on to a scanning electron microscope (SEM) stub in central Greenland. It was preserved at liquid-nitrogen temperature for 5 months, prior to examination […]

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5. Assessing the global and local pollution for heavy metals in Antarctica

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6. Structural setting and timing of hydrothermal veins and breccias on Hurd Peninsula, South Shetland Islands: a possible volcanic-related epithermal system in deformed turbidites

   Quartz veins and vein-breccias in a greywacke-shale sequence of ?Carboniferous-Triassic age were previously regarded as mesothermal silicified fault breccias, and related to an adjacent Eocene granodiorite pluton. New mapping of […]

   Read more of: Structural setting and timing of hydrothermal veins and breccias on Hurd Peninsula, South Shetland Islands: a possible volcanic-related epithermal system in deformed turbidites

7. Distribution and abundance of seabirds and fur seals near the Antarctic Peninsula during the austral winter, 1986

   Twenty one species of seabirds plus fur seals were observed at sea near the Antarctic Peninsula, between 60 °–68 °S, in May and June 1986, a season for which few […]

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8. Geochronology and radiogenic isotope geology of Mesozoic rocks from eastern Palmer Land, Antarctic Peninsula: crustal anatexis in arc-related granitoid genesis

   Rb Sr and Sm Nd analyses, as well as a few new K Ar dates, are presented for plutonic igneous, meta-igneous and metasedimentary rocks from the central Black Coast area […]

   Read more of: Geochronology and radiogenic isotope geology of Mesozoic rocks from eastern Palmer Land, Antarctic Peninsula: crustal anatexis in arc-related granitoid genesis

9. Isoswertiajaponin 2′’-O-β-arabinopyranoside and other flavone-C-glycosides from the Antarctic grass Deschampsia antarctica

   The major flavonoid constituents of the Antarctic grass, Deschampsia antarctica, are shown to be the C-glycosylflavones, isoswertiajaponin (7-O-methylorientin) 2′’-O-β-arabinopyranoside and orientin. These are accompanied by lower levels of orientin 2′’-O-arabinopyranoside, […]

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10. A laboratory investigation of two ultraviolet spectroradiometers

    Spectral measurements of the solar UV irradiance at the earth’s surface depend critically on the characteristics of the spectroradiometers and the procedures used in their calibration. Two UV spectroradiometers were […]

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11. Antarctica-New Zealand rifting and Marie Byrd Land lithospheric magmatism linked to ridge subduction and mantle plume activity

    Mid-Cretaceous igneous rocks of central Marie Byrd Land, Antarctica record a rapid change from subduction-related to rift-related magmatism. This correlates with the final stages of subduction of the Phoenix plate […]

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12. Interpreting the Environmental Protocol — a recipe for international confusion?

    Turning international agreement into national law has never been rapid or simple. Each country has its own parliamentary procedures, its own legal system and its own cultural interpretation of what […]

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