منابع مشابه
Cooling, dilution and mixing of ocean water by free-drifting icebergs in the Weddell Sea
Iceberg C-18a (35 7 0.184 km) was studied repeatedly by five circumnavigational surveys in March-April 2009. During the period of the surveys, C-18a travelled 109 nautical miles in 23 days covering an area of 8.1 10 km. This iceberg was formed from iceberg C-18 (76 7 km) that originated from the Ross Ice Shelf in May, 2002. Ship-based measurements show that this iceberg produced fresh meltwater...
متن کاملFree-drifting icebergs: hot spots of chemical and biological enrichment in the Weddell Sea.
The proliferation of icebergs from Antarctica over the past decade has raised questions about their potential impact on the surrounding pelagic ecosystem. Two free-drifting icebergs, 0.1 and 30.8 square kilometers in aerial surface area, and the surrounding waters were sampled in the northwest Weddell Sea during austral spring 2005. There was substantial enrichment of terrigenous material, and ...
متن کاملdetermination of maximal singularity free zones in the workspace of parallel manipulator
due to the limiting workspace of parallel manipulator and regarding to finding the trajectory planning of singularity free at workspace is difficult, so finding a best solution that can develop a technique to determine the singularity-free zones in the workspace of parallel manipulators is highly important. in this thesis a simple and new technique are presented to determine the maximal singula...
15 صفحه اولBrainstorming, Influence, and Icebergs
Brainstorming done right is an exhilarating, exhausting process. Two heads are better than one as long as both are actively trying to accomplish the same goal. But those two heads also can achieve less together than either could alone. It depends on many things. In the best case, both people realize that for nontrivial problems, neither one has all the right answers. They engage in a discussion...
متن کاملMicroevolution and mega-icebergs in the Antarctic.
Microevolution is regarded as changes in the frequencies of genes in populations over time. Ancient DNA technology now provides an opportunity to demonstrate evolution over a geological time frame and to possibly identify the causal factors in any such evolutionary event. Using nine nuclear microsatellite DNA loci, we genotyped an ancient population of Adélie penguins (Pygoscelis adeliae) aged ...
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ژورنال
عنوان ژورنال: Annals of Glaciology
سال: 1980
ISSN: 0260-3055,1727-5644
DOI: 10.3189/s0260305500017092