Brocas-Area
发表于 2025-3-23 11:05:39
,Structure of the earth’s crust,. The existence of this discontinuity has been established by seismic refractions and reflections, which show an abrupt increase in seismic wave speeds to a value which appears to be the same all over the world. The silicic crust is about 5 km. thick under oceans and about 35 km thick under continents.
热情的我
发表于 2025-3-23 13:57:14
,Forces in the Earth’s Crust,surface would be perfectly smooth and exhibit a simple geometrical form. However, everyone knows that the surface of the Earth is not perfectly smooth but exhibits a great number of disturbances. This fact must be the result of forces other than hydrostatic compression in the Earth’s crust and therefore requires a physical explanation.
Fabric
发表于 2025-3-23 18:54:12
Figur der Erde,n Gebrauch sollen bei den folgenden Betrachtungen auch die Wassermassen der Ozeane der Erdkruste und somit dem Erdkörper zugerechnet werden. Dann ist unter . die Grenzfläche zu verstehen, die den Erdkörper von der ihn umgebenden Atmosphäre trennt.
无可争辩
发表于 2025-3-23 22:46:36
Magnet-Motor und Magnet-Generator,When an earthquake occurs, energy, which may reach the order of 10. ergs in the greatest earthquakes is released, within a few seconds or less, from a focal region inside the Earth whose linear dimensions may be of the order of several kilometres. The (somewhat indefinite) centre of the focal region is called the ..
Institution
发表于 2025-3-24 02:52:02
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音乐戏剧
发表于 2025-3-24 10:16:13
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Hyperopia
发表于 2025-3-24 14:09:02
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Wallow
发表于 2025-3-24 18:22:38
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floodgate
发表于 2025-3-24 21:45:16
Magnetization of Rocks,The main topic of this chapter is the discussion of the natural remanent magnetization of rocks with the object of inferring the direction of the geomagnetic field in the geological past. The reader who is interested in other aspects of rock magnetism is referred to the additional references at the end.
anesthesia
发表于 2025-3-25 02:32:53
https://doi.org/10.1007/978-3-642-45855-2Geophysik; geophysics