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Speleology
Speleology (also spelled spelæology or spelaeology) is the scientific study of caves and other karst features, their make-up, structure, physical properties, history, life forms, and the processes by which they form (speleogenesis) and change over time (speleomorphology). The term speleology is also sometimes applied to the recreational activity of exploring caves, but this is more properly known as caving, spelunking or potholing. Speleology and caving are often connected, as the physical skills required for in situ study are the same. Speleology is a cross-disciplinary field that combines the knowledge of chemistry, biology, geology, physics, meteorology and cartography to develop portraits of caves as complex, evolving systems.
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北大西洋海流
Weather; Meteorology
當前流的東源自東部的大淺灘 (約 40 ° N,50 ° W) 的墨西哥灣流擴展。它最初大西洋副熱帶海洋環流的一部分,但它後不少於 500 公里附近 45 ° W,轉向東北和後,北極極地陣線,也稱為北牆,與運輸的一些 30 Sv 分開的 (30 × 10 6 米 3 的 −1 )。這種水的一些進入通過跨極地前面和梅格當前,飼料混合的副極地環流,但它 ...
北太平洋流
Weather; Meteorology
東移當前形成的北太平洋副熱帶環流北部。它源自以東的皇帝海山 (170 ° W) 黑潮延伸並維護北極極地前與阿留申或太平洋亞北極當前的遇到多大的攪拌,隨著向東 。寬頻流量約 2000 公里,寬,它到駛近北美海岸加州當前飼料及其水。 ...