نتایج جستجو برای: oceanic
تعداد نتایج: 14084 فیلتر نتایج به سال:
It has long been believed that the transport of heat northward by the Atlantic Ocean circulation is of importance to mean/seasonal atmosphere-ocean climate, and with less certainty, to decadal climate variability. Indeed, ASOF is founded on the idea that oceanic freshwater and heat transports are both crucial to climate. The importance of ocean circulation has been challenged Clement and Cane (...
The Darvazeh-Chenar mafic- ultramafic body is part of ophiolitic complex of Neyriz in Fars Province that formed in association with closing of Neo-Tethys Ocean and Arabian- Iranian plate collision in Cretaceous. The Faryab ophiolitic rocks are also remnant of block of Tethys oceanic crust that were obducted on continental margins in late Cretaceous period. MgO, Fe2O3, Al2O3, Cr2O3 and TiO2 cont...
Dioritic plutons and pinkish alkali-feldspar granitic dikes of Kalateh area (northwest of Khur city) intruded in Neoproterozoic basemental of Jandagh- Arousan complex. Field observations, petrography and geochemical studies indicate that these intrusive rocks have I-type nature and belong to medium-high K calc-alkaline granitiods and also have genetically relationship with each other. Their par...
Hasht-Sar Kaleybar mafic, ultramafic and syenitic dykes are surrounded by Majid Abad Formation, Palaeocene age, volcanic deposits. The suite is restricted within the Horand, Mahmud Abad and Mokhtekan thrust and reverse faults. Clinopyroxenites, the oldest unit of the suite, have tholeiitic volcanic arc character and have some similarities with tectonite layer of oceanic crust, like Group A pyro...
Oceanic threespine sticklebacks have repeatedly and independently evolved new morphologies upon invasions of freshwater habitats. A consistent derived feature of the freshwater form across populations and geography is a shape change of the opercle, a large early developing facial bone. We show that the principal multivariate axis describing opercle shape development from the young larva to the ...
O N A L D , * ~LISAM. DIPINTO,$JAY G. INGERSOLL,\~EDWARD FIELD,^ CHRISTOPHER R. LONG.# and RICHARDC. S W A R T Z ~ ~ on ofc;rd~~,i~n, tMacDonald Environmental Sciences Ltd.. 2376 Yellow Point Road. Nanaimo. British Columbia V9X IW5. Canada ~ o l 5:?67-2i~ $oRCA Damage Assessment Center, National Oceanic and Atmospheric Administration. 1305 East-West Highway. Room 10218. ness and htlln,,. Silver...
[1] High-precision relocations of intermediate-depth earthquakes (80–130 km) below the Central Andes reveal a fine-scaledouble-layeredWadati-Benioffzone(WBZ).Upper and lower band of seismicity are separated by about 9 km and occur at the top of the oceanic crust and in the uppermost oceanic mantle, respectively. Analysis of focal mechanisms and waveform similarities indicate that fluid processe...
J. Ronald V. Zaneveld College of Oceanic and Atmospheric Sciences Ocean. Admin. Bldg. 104 Oregon State University Corvallis, OR 97331-5503 Phone: (541) 737-3571 fax: (541) 737-2064 email: [email protected] W. Scott Pegau College of Oceanic and Atmospheric Sciences Ocean. Admin. Bldg. 104 Oregon State University Corvallis, OR 97331-5503 Phone: (541) 737-5229 fax: (541) 737-2064 email: spegau...
Direct-developing intertidal Lasaea spp. occur in the North Atlantic as both continental margin and oceanic island populations. We conducted a molecular phylogenetic analysis of representative populations in order to test colonization hypotheses for North Atlantic oceanic islands. Thirty individuals each were collected in 1995 and 1996 from two continental putative source populations (Florida, ...
In volume 19(10) of the International Journal of Geographical Information Science, Valavanis et al. (2005) proposed a new method – ‘sink method’ for identifying oceanic thermal fronts. Although it is encouraging to see the authors apply geographic information system (GIS) in an oceanographic study, we argue that this proposed method for front detection in the oceans is flawed as it is based on ...
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