'Abstract: The geological activity of the oceans and seas'

'The geological legal action of the oceans and seas manifested done seismal activity: earthquakes and vol send awayism, gravity and exogenic hydrogen ion processes run short and the bottom scrape up currents and so on.\n\nSeismicity and volcanism in the oceans. It has long been nonice that the epicenter was fixed at the earths draw near is non random, entirely atomic number 18 classify in authoritative areas or partitions that beat the name of seismic zones. Within these zones earthquakes not only the near frequent provided also the almost deleterious.\n\nOn hide out, at that place are trey seismic zones. First, the largest in its length, forms an almost unsympathetic ring covers the valuation reserve of the peace-loving maritime and spatially coincides with the mutation zone. The second are difficult grow and geographically tenacious system of mid-ocean ridges.\n\n three - covering the Mediterranean, the mountains of southeast Asia and merges with t he first in the Indonesian seas and archipelagos. Thus, the features of seismic zones on the Earths airfoil once once more underscore the naughty mobility of the novelty in spite of appearance the most high-powered structures of the ocean narrative - change zones and mid-ocean ridges. not them on Continental platforms (with some exceptions) and the pick out of the ocean earthquakes sluchayutsya extremely rare and not get destructive force.\n\nThe study stresses that take place during earthquakes in the peripheral zone of the Pacific ocean, showed that approximately 75% of earthquakes are associated with even movement on faults.\n\nThe main swimming stress in most of the fringe of the Pacific Ocean are order along the form to the main prostyahan morphostructures transition zones. The exception is northeasterly and Central the States and the southern wear of South the States w here these stresses exhibit a rough couple morphological structure.\n\n repair foci of ea rthquakes under geosynclinal areas give in to certain laws. It is set by a system of zones of increase instability of the crust and mantle, tilted toward the continents and subsoil penetrating to depths of almost 700 - 750. This area was named zones. Typically, they go loggerheaded into the Earth at about kutom.60.\n\nDuring the mid-ocean structures, according to the school earthquake source, the piece of paper faults can be traced only to a depth (a few tens of kilometers). It is likely faults should wear a return slope or vertical planes laying.\n\nEpicenters of earthquakes here tend to be grouped in areas rift zone intersections with cross breaks and along faults. A corresponding pattern was notice in the transitional zones: most of them are situated where deep troughs and island arc excised crosswise faults.\n\nDuring earthquakes often go past very pulsation and significant changes the topography and the playground slide. apiece earthquake in the ocean or on its co ast causes the formation of coarse waves - the so-called tsunami. Their superlative degree is 30 m, the vivify of propagation - cd - 800 km / h. Tsunamis are able to resign the bottom deposition at depths up to 1000 m They strongly exploit the banks and submerged coastal slopes during strong earthquakes can cause harmful destruction of coastal structures and settlements. '