The fate and weathering of surface oil from the bravo blowout     

Tore Audunson 《Marine environmental research》1980,3(1):35-61

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Optimal selection of temperature areas by juvenile cod (Gadus morhua L.) in the Barents Sea modelled by dynamic optimisation     

Kristiansen  Tore S.; Michalsen  Kathrine; Jacobsen  Jan Arge; Huse  Irene 《ICES Journal of Marine Science》2001,58(1):172-182

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Biological reference points for North-East Arctic cod and haddock     

Jakobsen  Tore 《ICES Journal of Marine Science》1992,49(2):155-166

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Late Cenozoic prograding wedges on the NW European continental margin: their formation and relationship to tectonics and climate   总被引：1，自引：4，他引：1  

K.I. Torbjrn Dahlgren  Tore O. Vorren  Martyn S. Stoker  Tove Nielsen  Atle Nygrd  Hans Petter Sejrup 《Marine and Petroleum Geology》2005,22(9-10):1089

During late Pliocene to Pleistocene times, prominent prograding wedges were deposited along the continental margin of NW Europe, resulting in seaward shelf break migration of up to 150 km. Much of the sediment accumulation occurred marginal to the former mid- to high-latitude ice sheets. The geographical distribution, and stratigraphical and chronological data may suggest that the instigation of the wedges was variously related to tectonic uplift as well as a response to the late Pliocene to Pleistocene climate deterioration and onset of major northern hemisphere glaciations. The onset of wedge growth on the NW UK and Irish margins was initiated at about 4 Ma in response to tectonic tilting of the margin in that region. However, glacially derived sediments here comprise a significant proportion of the wedges, especially since 0.44 Ma. For the Faroe margin, no detailed chronology is available; however, it may be inferred that onset of glacigenic wedge growth here did not post-date that observed on the NW UK and Irish margins. Offshore Norway, wedge growth has largely occurred since ca. 2.7 Ma in response to northern hemisphere glaciations, also recording a major change in sediments transport routes at 0.8–1.1 Ma (reflecting larger Fennoscandian Ice Sheets). Presently, it is uncertain whether the glacigenic wedge growth was preceded by a fluvial phase (in response to uplift) in this area. In the western Barents Sea, an early phase of wedge growth was (glacio) fluvial in character. Off western Spitsbergen, the development was similar to that of the Barents Sea although the glacigenic wedge-growth phase may have started somewhat earlier.The wedges commonly display gently inclined seaward prograding clinoforms, and transparent to chaotic internal acoustic facies. Sampling of their sediments reveals that they are mainly composed of glacigenic diamicton interbedded with marine and glaciomarine sediments that, to various extents, have been affected by bottom-current action. The clinoforms of these wedges vary in geometry from oblique to sigmoidal, and they also show varying degrees of aggradation throughout their development. The resulting stratal stacking pattern can be attributed to a combination of variations in sediment supply, sedimentary processes, and accommodation space, the latter being a function of tectonic movements and/or loading induced subsidence as well as eustatic sea-level fluctuations.  相似文献   

Estimation of harp seal (Pagophilus groenlandicus) pup production in the North Atlantic completed: results from surveys in the Greenland Sea in 2002     

Haug  Tore; Stenson  Garry B.; Corkeron  Peter J.; Nilssen  Kjell T. 《ICES Journal of Marine Science》2006,63(1):95-104

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Marine C reservoir ages for 19th century whales and molluscs from the North Atlantic     

Jan Mangerud  Stein Bondevik  Steinar Gulliksen  Anne Karin Hufthammer  Tore Hister 《Quaternary Science Reviews》2006,25(23-24):3228

In order to compare radiocarbon dates on marine and terrestrial samples the former have to be corrected for a reservoir age. We present reservoir ages from dating 21 whales collected 1860–1901 and recalculating dates of 23 molluscs collected 1857–1926. Most of the whales were caught along the coast of Norway, but one is from France and one from Iceland. We assume the former mainly lived in the North and equatorial Atlantic and in the Norwegian Sea. Whales feed only on pelagic organisms and will provide the reservoir age for the open ocean surface water. However, they travel long distances and will integrate the reservoir ages of the different water masses along their way. Molluscs (dated from Norway, Spitsbergen and Arctic Canada) are stationary and monitor the sea water passing their dwelling site, but some also take up carbon from particulate food or sediment pore water. Coastal water also often contains some continental carbon. We present two different views on how to analyze and interpret the data. Mangerud recommends to use reservoir ages based on a combination of the whale and mollusc dates, i.e. 380±30 and 360±30 yr relative to Intcal04 and British oak, respectively, and a ΔR value of 20±30 for the surface water in the N-Atlantic and Norwegian Sea. Bondevik and Gulliksen maintain that the reservoir age—and ΔR—along the Norwegian coast is latitude dependant, with ΔR-values increasing from −3±22 in the South to 105±24 at Spitsbergen. Whales, reflecting North Atlantic open ocean surface water have lower ΔR (7±11) than most molluscs.  相似文献   

Electron microscope study of peridotite xenoliths in kimberlites     

Arne Olsen  Tore Birkeland 《Contributions to Mineralogy and Petrology》1973,42(2):147-157

Dislocation structures in naturally deformed olivine from garnet peridotite xenoliths from South African kimberlites have been studied by electron microscopy. The substructure consists mainly of straight subboundaries of dislocations with Burgers vectors [001]. Most of the dislocations have both edge and screw components, and the slip planes are mainly (100). The dislocation density between the subboundaries is low.The slip planes in olivine are discussed in relation to the olivine structure. The observed dislocation structures seem to indicate that the large difference in strain rate between natural and experimental deformation will produce a difference in the slip mechanisms.The nature of the deformation lamellae visible in optical microscope is discussed.  相似文献   

Weaker connection between the Atlantic Multidecadal Oscillation and Indian summer rainfall since the mid-1990s          下载免费PDF全文

LUO Fei-Fei  LI Shuanglin  Tore FUREVIK 《大气和海洋科学快报》2018,(1)

以前的研究表明在50-60年的时间尺度上,北大西洋多年代际振荡(AMO)对印度夏季降水(ISMR)有重要的调制作用。在观测和模式研究中AMO和ISMR均存在显著的正相关关系。但是,上世纪90年代中期之后,器测资料显示二者的关系变得不显著,甚至表现出相反的位相关系。这表明二者的关系减弱了。这个研究探讨了AMO-ISMR关系减弱的可能物理机制。研究显示印度洋-热带西太平洋海温的显著增暖可能是原因之一。这个增暖使得欧亚大陆和印度洋之间的对流层温度梯度减弱,以及印度次大陆和印度洋之间的海陆热力差异减弱,从而减弱ISMR。  相似文献   

Teleconnection between Sea Ice in the Barents Sea in June and the Silk Road,Pacific–Japan and East Asian Rainfall Patterns in August   总被引：3，自引：0，他引：3  

Shengping HE  Yongqi GAO  Tore FUREVIK  Huijun WANG  Fei LI 《大气科学进展》2018,35(1):52-64

In contrast to previous studies that have tended to focus on the influence of the total Arctic sea-ice cover on the East Asian summer tripole rainfall pattern, the present study identifies the Barents Sea as the key region where the June sea-ice variability exerts the most significant impacts on the East Asian August tripole rainfall pattern, and explores the teleconnection mechanisms involved. The results reveal that a reduction in June sea ice excites anomalous upward air motion due to strong near-surface thermal forcing, which further triggers a meridional overturning wave-like pattern extending to midlatitudes.Anomalous downward motion therefore forms over the Caspian Sea, which in turn induces zonally oriented overturning circulation along the subtropical jet stream, exhibiting the east–west Rossby wave train known as the Silk Road pattern. It is suggested that the Bonin high, a subtropical anticyclone predominant near South Korea, shows a significant anomaly due to the eastward extension of the Silk Road pattern to East Asia. As a possible descending branch of the Hadley cell, the Bonin high anomaly ultimately triggers a meridional overturning, establishing the Pacific–Japan pattern. This in turn induces an anomalous anticyclone and cyclone pair over East Asia, and a tripole vertical convection anomaly meridionally oriented over East Asia. Consequently, a tripole rainfall anomaly pattern is observed over East Asia. Results from numerical experiments using version 5 of the Community Atmosphere Model support the interpretation of this chain of events.  相似文献   

Teleconnection between Winter Arctic Oscillation and Southeast Asian Summer Monsoon in the Pre-Industry Simulation of a Coupled Climate Model          下载免费PDF全文

CUI Xue-Dong  GAO Yong-Qi  GONG Dao-Yi  GUO Dong  Tore FUREVIK 《大气和海洋科学快报》2013,6(5):349-354

A 600-year pre-industrial simulation with Bergen Climate Model(BCM)Version 2 is used to investigate the linkage between winter Arctic Oscillation(AO)and the Southeast Asian summer monsoon(SEASM)on the inter-decadal timescale.The results indicate an in-phase relationship between the AO and SEASM with periods of approximately 16–32 and 60–80 years.During the positive phase of winter AO,an anomalous surface anti-cyclonic atmosphere circulation appears over North Pacific in winter.The corresponding anomalies in ocean circulation and surface heat flux,particularly the latent and sensible heat flux,resemble a negative Pacific Decadal Oscillation(PDO)-like sea surface temperature(SST)pattern.The AO-associated PDO-like winter SST can persist into summer and can therefore lead to inter-decadal variability of summer monsoon rainfall in East and Southeast Asia.  相似文献