Excursion to Central Brittany     

P. Lebesconte  T. Bezier  Frederick Meeson 《Proceedings of the Geologists' Association. Geologists' Association》1899,16(5):240-242

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Long excursion to the Lake District: August 7th to 17th, 1920     

J. Frederick N. Green 《Proceedings of the Geologists' Association. Geologists' Association》1921,32(3):123-IN1

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Optimum design of Ocean bottom seismometers     

George H. Sutton  Frederick K. Duennebier 《Marine Geophysical Researches》1987,9(1):47-65

Ocean bottom seismometers (OBS) have been widely used during the past decade to collect seismic data for determination of the structure of the oceanic lithosphere, stress patterns in regions of earthquake activity, and geoacoustic parameters of the ocean floor. Data quality from these experiments has often been disappointing because of poor signal quality and high noise levels. Many of these problems result from motion of the OBS package that is decoupled from motion of the ocean floor. These coupling problems are more serious in the ocean than on land because of the low shear strengths of most ocean sediments. In this paper we continue to develop the theory of coupling of OBSs to soft sediments and arrive at results suggesting that OBS packages should be designed with: (1) the minimum mass possible, (2) radius of area in contact with the sediment proportional to the cube root of the mass, and the maximum radius less than 1/4 of the shear wavelength, (3) density of the OBS approximately that of the sediment, (4) a low profile and a small vertical cross section with water, and (5) low density gradients, and maximum symmetry about the vertical axis. Agreement of the theory with test data is good; most deviations are reasonable, given limitations of the theory and experiments. The theory also suggests that the coupling frequency, the frequency above which the OBS does not follow the motion of the sediment, is directly proportional to the sediment shear velocity.  相似文献   

Gravity-flow deposits from the St. Croix Ridge: Depositional history     

Troy L. Holcombe  Cynthia G. Fisher  Frederick A. Bowles 《Geo-Marine Letters》1989,9(1):11-18

Gravity-flow sediments from the South Virgin Islands Trough Escarpment (west of the island of St. Croix) contain Late Cretaceous through Late Miocene nannofossils that are well mixed even within individual samples. These sediments, reworked and redeposited in latest Miocene or Early Pliocene, apparently occur within a sequence of Late Miocene-to-recent fan deposits. Marine source beds representing all pre-Pliocene epochs of the Cenozoic and latest Cretaceous must have been exposed along the NW-facing West St. Croix Escarpment. Southward tilting of the St. Croix Ridge has subsequently altered the depositional pattern.  相似文献   

A high quality low cost receiver for military sonobuoys     

Donald E. Koelsch  Frederick R. Hess 《Marine Geophysical Researches》1981,4(4):479-483

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Using global genome approaches to address problems in cod mariculture     

Goetz  Frederick W.; McCauley  Linda; Goetz  Giles W.; Norberg  Birgitta 《ICES Journal of Marine Science》2006,63(2):393-399

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Movements and survival of sonically tagged farmed Atlantic salmon released in Cobscook Bay, Maine, USA     

Whoriskey  Frederick G.; Brooking  Paul; Doucette  Gino; Tinker  Stephen; Carr  Jonathan W. 《ICES Journal of Marine Science》2006,63(7):1218-1223

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Comparison of upper ocean thermal conditions in the western North Pacific between two pentads: 1938–42 and 1978–82     

Frederick M. Bingham  Toshio Suga  Kimio Hanawa 《Journal of Oceanography》1992,48(4):405-425

In order to understand long-term changes in the temperature structure of the upper western North Pacific, we compared thermal conditions in two pentads, 1938–42 (P34) and 1978–82 (P78). The 1938–42 data were taken mostly by the Japanese Imperial Navy in a series of hydrographic surveys. The 1978–82 data were mostly XBT data taken as part of the TRANSPAC program. For each pentad, the data were interpolated to a set of standard depths, put through quality control procedures and averaged on a 1^o×1^o grid. A large area of the central subtropical gyre was warmer during P78, while the southern subtropical gyre, in the area of the North Equatorial Current was warmer during P34. This suggests that the transports of the Kuroshio and North Equatorial currents were larger during P78. Properties of North Pacific subtropical mode water (NPSTMW) were compared between pentads. It was found that NPSTMW was thicker, more uniform in temperature and more confined geographically during P34. A greater thickness is shown to result from stronger wintertime cooling during P34. Changes in the geographic extent of NPSTMW probably result from reduced advection by the Kuroshio current system during P34. The reason for the reduced advection maybe the Kuroshio was in a large meander state for a larger fraction of the earlier pentad, which can cut off advection west of the Izu Ridge.  相似文献   

Sonic tracking of wild cod, Gadus morhua, in an inshore region of the Bay of Fundy: a contribution to understanding the impact of cod farming for wild cod and endangered salmon populations     

Brooking  Paul; Doucette  Gino; Tinker  Steve; Whoriskey  Frederick G. 《ICES Journal of Marine Science》2006,63(7):1364-1371

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Quaternary hemipelagic sedimentation in the basins flanking the Solomon Islands volcanic arc     

J. B. Colwell  N. F. Exon 《Geo-Marine Letters》1988,8(3):139-147

Quaternary sediments in the Woodlark Basin and New Georgia Sound, adjacent to the Solomon Islands volcanic arc, are hemipelagic. They consist of mixtures of clay minerals, calcareous plankton (foraminifera, coccoliths, and pteropods), and sand- and silt-sized volcanic debris. Variations in sediment composition are related primarily to distance from land (the source of volcanic components), water depth (because of the Aragonite and Calcite Compensation Depths), and bathymetric isolation. Much of the sedimentary debris is delivered to the basin by turbidity currents and other mass movements; little material is supplied by ash fall. Sedimentation rates appear to exceed 3 cm/1,000 years in New Georgia Sound, and range from 2 to 4.5 cm/1,000 years in the Woodlark Basin.  相似文献