نتایج جستجو برای: shallow shelf

تعداد نتایج: 61594  

Journal: :Proceedings. Biological sciences 2014
Ben Thuy Steffen Kiel Alfréd Dulai Andy S Gale Andreas Kroh Alan R Lord Lea D Numberger-Thuy Sabine Stöhr Max Wisshak

Owing to the assumed lack of deep-sea macrofossils older than the Late Cretaceous, very little is known about the geological history of deep-sea communities, and most inference-based hypotheses argue for repeated recolonizations of the deep sea from shelf habitats following major palaeoceanographic perturbations. We present a fossil deep-sea assemblage of echinoderms, gastropods, brachiopods an...

2017
Maria T Kavanaugh Jennie E Rheuban Kelly M A Luis Scott C Doney

The U.S. Northeast Continental Shelf is experiencing rapid warming, with potentially profound consequences to marine ecosystems. While satellites document multiple scales of spatial and temporal variability on the surface, our understanding of the status, trends, and drivers of the benthic environmental change remains limited. We interpolated sparse benthic temperature data along the New Englan...

2014
Pengfei Xue Elfatih A. B. Eltahir Paola Malanotte-Rizzoli Jun Wei

The focus of this study is the local-scale air-sea feedback mechanisms over the shallow shelf water region (water depth <200 m) of the Maritime Continent (MC). MC was selected as a pilot study site for its extensive shallow water coverage, geographic complexity, and importance in the global climate system. To identify the local-scale air-sea feedback processes, we ran numerical experiments with...

2012
Ben M. Fitzpatrick Euan S. Harvey Andrew J. Heyward Emily J. Twiggs Jamie Colquhoun

The implications of shallow water impacts such as fishing and climate change on fish assemblages are generally considered in isolation from the distribution and abundance of these fish assemblages in adjacent deeper waters. We investigate the abundance and length of demersal fish assemblages across a section of tropical continental shelf at Ningaloo Reef, Western Australia, to identify fish and...

Journal: :Journal of Glaciology 2021

Abstract We develop a two-dimensional, plan-view formulation of ice-shelf flow and viscoelastic flexure. This combines, for the first time, shallow-shelf approximation horizontal (and shallow-stream on lubricated beds such as where ice rises rumples form), with treatment thin-plate demonstrate by performing two finite-element simulations: one relict pedestalled lake features that exist some deb...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1376

saluk mount is selected for devonian biostratigraphy. this area located at southwest of bojnurd. in this study three sections are selected and two sections, chahar-borj and tabar sections with a thickness of 650 m, which consist mainly of calcareous sediments was studied in detailed but third section, qelli section, with a thickness of about 450m which consist mainly of sandstone and evaporates...

2007
Ruth Wylie

Motivated by both classroom needs and learning science questions, we developed two computer-based systems to help students learn the English article system (a, an, the, null). The first system, a menu-based task, mimics cloze activities found in many ESL textbooks. The second, a controlled-editing task, gives students practice with both detecting errors and producing the correct response. Resul...

2014
Luis Carlos Pinto de Macedo-Soares Carlos Alberto Eiras Garcia Andrea Santarosa Freire José Henrique Muelbert

Ichthyoplankton is an essential component of pelagic ecosystems, and environmental factors play an important role in determining its distribution. We have investigated simultaneous latitudinal and cross-shelf gradients in ichthyoplankton abundance to test the hypothesis that the large-scale distribution of fish larvae in the South Brazil Shelf is associated with water mass composition. Vertical...

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