نتایج جستجو برای: subaerial environment
تعداد نتایج: 518340 فیلتر نتایج به سال:
Stromboli is an active insular volcano located in the Southern Tyrrhenian Sea and its recent volcanic activity mostly confined within Sciara del Fuoco (SdF, hereafter), a 2-km wide subaerial–submarine collapse scar, which morphologically dominates NW flank of edifice. In August-November 2014, effusive eruption occurred along steep SdF slope, with multiple lava flows reaching sea. The integratio...
The origin of life is one the most fundamental questions humanity. It has been and still being addressed by a wide range researchers from different fields, with approaches ideas as to how it came about. What incomplete constrained information about environment conditions reigning on Hadean Earth, particularly inorganic ingredients available, stability longevity various environments suggested lo...
A new approach is developed to improve the automated identification and characterization of topographic highs having quasi-elliptical basal shapes. It is designed for the study of volcanic edifices in subaerial and submarine environments, but may be applied to identify any enclosed topography feature within a digital elevation model. The procedure utilizes the results of a standard closedcontou...
A comprehensive, time-averaged inventory of subaerial emissions of mercury from volcanoes that were active between 1980 and 2000 is derived based on the Hg/SO(2) ratios of the exhalations. Worldwide flux of mercury from volcanic eruptions is estimated to be 57 t/year while the flux from degassing activities is 37.6 t/year. After correcting for 'unmeasured' SO(2) emissions, the total global flux...
Abstract A late early Maastrichtian dinosaur trampling site is reported from the Farrokhi Formation of Khur area, Central Iran. The largely indeterminate footprints, some which may represent undertracks, can be classified as natural moulds (i.e. concave epireliefs) bordered by a raised rim displaced sediment. They reach diameters up to 0.5 m and were impressed under very shallow subaerial condi...
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