نتایج جستجو برای: red sea oceanic spreading
تعداد نتایج: 317395 فیلتر نتایج به سال:
The Shatsky Rise is one of the largest oceanic plateaus, a class of volcanic features whose formation is poorly understood. It is also a plateau that was formed near spreading ridges, but the connection between the two features is unclear. The geologic structure of the Shatsky Rise can help us understand its formation. Deeply penetrating two-dimensional (2-D) multichannel seismic (MCS) refl ect...
It has been suggested that the Shatsky Rise oceanic plateau formation began simultaneously with a reorganization of spreading at a triple junction bordering the northern Pacifi c plate, and this coincidence has led to speculation about the connections between the two events. We present new marine geophysical data that constrain the seafl oor spreading history of the Pacifi c-Izanagi-Farallon tr...
1. introduction variability and changes in precipitation amounts, including extreme precipitation and droughts, trigger relevant societal and environmental impacts. atmospheric circulation strongly determines precipitation variability over southern half of iran. the influence of prevalent synoptic situations on the distribution of precipitation amounts needs to be understood, as well as their f...
The South American sea lion (Otaria flavescens) is widely distributed along the southern Atlantic and Pacific coasts of South America with a history of significant commercial exploitation. We aimed to evaluate the population genetic structure and the evolutionary history of South American sea lion along its distribution by analyses of mitochondrial DNA (mtDNA) and 10 nuclear microsatellites loc...
SUMMARY The axial region of the Central Red Sea has been shown to be floored by oceanic crust, but this leaves low amplitudes off-axis magnetic anomalies explained. Furthermore, if seafloor spreading occurred in late Miocene, it is unclear how that as widespread evaporites were being deposited then and may have covered centre. In study, we derive crustal magnetization for a constant-thickness s...
More than a hundred ERS SAR images were analyzed to investigate the features of wind regime and surface circulation in the Japan Sea during the winter monsoon season. Most of the images cover the northwestern portion of the sea. 35 of them were eliminated from the analysis due to strong winds. Background radar characteristics on the rest images varied from practically uniform when the marine bo...
The addition of iron to high-nutrient low-chlorophyll (HNLC) oceanic waters stimulates phytoplankton, leading to greater primary production. Large-scale artificial ocean iron fertilization (OIF) has been proposed as a means of mitigating anthropogenic atmospheric CO(2), but its impacts on ocean ecosystems below the photic zone are unknown. Natural OIF, through the addition of iron leached from ...
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