Oblique subduction at a high rate of convergence along much of the Middle America Trench results in northwest-directed trench-parallel block motion. Accommodation of this motion along northwest-striking dextral strike-slip faults has been postulated; however, in Nicaragua such faults are not well developed. We suggest instead that this motion is accommodated by bookshelf faulting that includes ...

morphometric differentiations may explain biogeographic distinctions among populations of a given species. the possibility of morphometric distinctions between two populations of eurygaster maura l. collected from the northeast (golestan province) and the northwest (azarbayejan province) of iran was examined using principal component analysis over 25 body measurements (eight absolute and 17 pro...

Understanding factors that cause species' geographic range limits is a major focus in ecology and evolution. The central marginal hypothesis (CMH) predicts that species cannot adapt to conditions beyond current geographic range edges because genetic diversity decreases from core to edge due to smaller, more isolated edge populations. We employed a population genomics framework using 24 235-33 1...

The Haynesville Shale is a subsurface rock formation located beneath the Northeast Texas/Northwest Louisiana border near Shreveport. This formation is estimated to contain very large recoverable reserves of natural gas, and during the two years since the drilling of the first highly productive wells in 2008, has been the focus of intensive leasing and exploration activity. The development of na...

The mean vertical velocity in pressure coordinates, and the corresponding height tendency, was computed at intervals of 100 mb from 1000 mb to 60 mb on a mesh covering India and most of southeast Asia. The rate of non-adiabatic heat supply was expressed as a function of the computed height tendency. The results showed pronounced ascent over northeast India and a zone of subsidence over northwes...

The 28 June 1992 Big Bear earthquake occurred at 15:05:21 GMT and is considered to be an af tershock of the earlier Mw = 7.3 Landers earthquake. F rom overall aftershock locations and long-period focal studies, rupture is general ly assumed to have propagated northeast. No surface rupture was found, however , and the mainshock locations determined f rom both strong motion and TERRAscope data ar...

The colonial ascidian Botryllus schlosseri should be considered cryptogenic (i.e., not definitively classified as either native or introduced) in the Northwest Atlantic. Although all the evidence is quite circumstantial, over the last 15 years most research groups have accepted the scenario of human-mediated dispersal and classified B. schlosseri as introduced; others have continued to consider...

Atmospheric precipitation during cyclonic situations was analyzed using weather types classification. Based on data from the period 1991 to 2015, observed were in terms of their frequency days with a given type. Cyclonic airflow direction west and northwest, north northeast, east southeast, south southwest analyzed. We identified declining number that can be classified as situations. The distri...