11317 to 11328 of 13838 results
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Limited dechlorination of sea-salt aerosols during the last glacial period: evidence from the European Project for Ice Coring in Antarctica (EPICA) Dome C ice core
Read more of: Limited dechlorination of sea-salt aerosols during the last glacial period: evidence from the European Project for Ice Coring in Antarctica (EPICA) Dome C ice coreChloride (Cl-) and sodium (Na+) in ice cores originate mainly from sea salt, and one would thus expect the Cl-/Na+ ratio to reflect the seawater ratio. However, at Dome C, […]
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Stratospheric temperatures in Antarctic winter: does the 40-year record confirm mid-latitude trends in stratospheric water vapour?
Read more of: Stratospheric temperatures in Antarctic winter: does the 40-year record confirm mid-latitude trends in stratospheric water vapour?Water vapour is a potent greenhouse gas, and the observed increases in water vapour in the stratosphere act to cool it. Possible changes in stratospheric temperatures are important for future […]
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Solar UV irradiation conditions on the surface of Mars
Read more of: Solar UV irradiation conditions on the surface of MarsThe UV radiation environment on planetary surfaces and within atmospheres is of importance in a wide range of scientific disciplines. Solar UV radiation is a driving force of chemical and […]
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Significance of lightning-generated whistlers to inner radiation belt electron lifetimes
Read more of: Significance of lightning-generated whistlers to inner radiation belt electron lifetimesThe behavior of high-energy electrons trapped in the Earth’s Van Allen radiation belts has been extensively studied, through both experimental and theoretical techniques. While the evidence for whistler induced electron […]
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Anti-parallel reconnection at the dayside magnetopause: ionospheric signatures and implications for the low latitude boundary layer
Read more of: Anti-parallel reconnection at the dayside magnetopause: ionospheric signatures and implications for the low latitude boundary layerReconnection at the dayside magnetopause is of fundamental importance in determining the dynamics and composition of the magnetosphere and the high latitude ionosphere. There are two competing hypotheses for such […]
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Ultramafic lamprophyres of the Ferrar large igneous province: evidence for a HIMU mantle component
Read more of: Ultramafic lamprophyres of the Ferrar large igneous province: evidence for a HIMU mantle componentUltramafic lamprophyre (UML) dykes from the Ferrar Province (Pensacola Mountains) of Antarctica preserve trace element and isotope signatures similar to Bouvet volcanic rocks, which are considered to reflect the palaeo […]
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Basal topography and ice flow in the Bailey/Slessor region of East Antarctica
Read more of: Basal topography and ice flow in the Bailey/Slessor region of East AntarcticaAn airborne radio-echo sounding campaign carried out in the upper reaches of Bailey Ice Stream and Slessor Glacier, in Coats Land, East Antarctica, has revealed that tributaries of enhanced flow […]
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Thinning of the Antarctic Peninsula lithosphere through the Mesozoic: evidence from Middle Jurassic basaltic lavas
Read more of: Thinning of the Antarctic Peninsula lithosphere through the Mesozoic: evidence from Middle Jurassic basaltic lavasRare basaltic volcanic rocks from the northern Antarctic Peninsula (Jason Peninsula) are established as marginally predating a silicic large igneous province, which developed along the proto-Pacific margin of Gondwana. Ar-40-Ar-39 […]
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MF radar observations of seasonal variability of semidiurnal motions in the mesosphere at high northern and southern latitudes
Read more of: MF radar observations of seasonal variability of semidiurnal motions in the mesosphere at high northern and southern latitudesThe semidiurnal tide (SDT) is investigated through comparative analysis of horizontal winds measured at Poker Flat (65degreesN, 147degreesW), Andenes (69degreesN, 16degreesE), Davis (69degreesS, 78degreesE), and Rothera (68degreesS, 69degreesW). At the […]
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