منابع مشابه
Temporal variations in sea ice resistivity: Resolving anisotropic microstructure through cross‐borehole DC resistivity tomography
[1] The distribution and connectivity of brine pockets in first year sea ice has a determining influence on the bulk properties of the ice and its interaction with the environment. The structure of the brine network depends upon both temperature and salinity, and a full understanding of the temporal evolution of sea ice physical properties requires measurements that are sensitive to the microst...
متن کامل10Be climate fingerprints during the Eemian in the NEEM ice core, Greenland
Several deep Greenland ice cores have been retrieved, however, capturing the Eemian period has been problematic due to stratigraphic disturbances in the ice. The new Greenland deep ice core from the NEEM site (77.45 °N, 51.06 °W, 2450 m.a.s.l) recovered a relatively complete Eemian record. Here we discuss the cosmogenic (10)Be isotope record from this core. The results show Eemian average (10)B...
متن کاملHysteresis in Cenozoic Antarctic ice-sheet variations
A coupled global climate–Antarctic ice sheet model is run for 10 million years across the Eocene–Oligocene boundary ~34 Ma. The model simulates a rapid transition from very little ice to a large continental ice sheet, forced by a gradual decline of atmospheric CO2 and higher-frequency orbital forcing. The structure of the transition is explained in terms of height mass balance feedback (HMBF) i...
متن کامل10Be surface exposure dating
We use 10Be surface exposure dating to construct a high-resolution chronology of glacial fluctuations in the Sierra Nevada, California. Most previous studies focused on individual glaciated valleys, whereas our study compares chronologies developed throughout the range to identify regional patterns in the timing of glacier response to major climate changes. Sites throughout the range indicate L...
متن کاملMeasuring Temporal Variations in Presence
• In the current study we have applied the concept of presence to 3DTV research. More specifically, we took this concept to reflect the increased perceptual linkage between the observer and the mediated environment, supporting an illusion of non-mediation. We applied the continuous assessment methodology to reveal time-variant properties of presence, which were hitherto largely ignored, and to ...
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ژورنال
عنوان ژورنال: Radiocarbon
سال: 1983
ISSN: 0033-8222,1945-5755
DOI: 10.1017/s0033822200005579