澳大利亚南极科学数据管理综述   总被引：4，自引：0，他引：4  

凌晓良  LEE Belbin  张洁  朱建钢  张侠  汪大立 《地球科学进展》2007,22(5):532-539

系统概述了澳大利亚国家南极数据政策、组织机构、管理模式、实施策略与未来发展所面临的问题。在此基础上分析澳大利亚南极数据工作的发展与实效,并回顾了中国的极地数据管理工作,初步表明建立一个有效的组织框架是顺利开展数据管理与共享工作的基础,完全基于Web的数据管理与服务对科学项目的管理与研究成果的产出具有较大的促进作用。同时可以看出,国家层面的数据管理工作首先必须有明确的国家数据政策作引导;需要建立各种相应的数据标准与规范以及基于Web的数据管理、共享与服务平台;当然更离不开一支进行数据管理、服务与技术支持的专业队伍,并通过工作绩效评价系统对各个环节进行评价和考核。其中,为数据（集）编写完整、准确的元数据始终是数据管理中最重要的基础工作。  相似文献   

TRANSIENT ELECTROMAGNETIC RESPONSE OF A SPHERE IN A LAYERED MEDIUM*     

T. LEE 《Geophysical Prospecting》1975,23(3):492-512

The Galerkin method of solving integral equations is well suited to the solution of the integral equations describing the transient response of a sphere embedded in a layered medium, which is excited by a large co-axial loop. The transient response is calculated by transforming the steady state solutions obtained in the frequency domain. The analysis shows that the scattering matrix is extremely diagonally dominant and the maximum number of modes required to obtain convergence does not rapidly increase with frequency. The number of modes required is about eight. This type of scattering matrix can be taken to be an expression of the principle of elementary superposition. This principle is reflected in the decay curves. These show that the early part of the decay curves asymptotically approach the decay curves to be expected for a layered structure without the sphere. The slope of the latter stages of the decay curve gives a decay constant that is the same as was obtained for spheres in free space excited by planar or dipolar sources. The point of departure in time of these curves from the layered ground curves is delayed either by placing the sphere at a greater depth or by placing a more conductive overburden above the sphere.  相似文献   

RANK-ORDER ANALYSIS FOR ROBUST MULTIRESPONSE,MULTIBLOCK COMPARISONS:EVALUATION OF HERBICIDE INTERACTIONS     

DAVID LEE DUEWER  ROBERT D.CLARK 《地理学报(英文版)》1991,(6)

Studies of interactions among bioactive compounds are often difficult to interpret unambiguously.A priori assumptions about the nature of such interactions can seriously distort analysis of the data.Byapplying a rank order analysis appropriate to the naturally ordinal scale of response to xenobiotic insult,several co-herbicides were successfully identified from among numerous candidates in an experimentinvolving multiple blocks,rates and species.Moreover,underlying herbicide interactions weresubstantiated and identified which were not apparent by more traditional parametric analysis.  相似文献   

Bottom-current deposits in the Miocene–Pliocene Misaki Formation, Izu forearc area, Japan     

INTAE  LEE & YUJIRO  OGAWA 《Island Arc》1998,7(3):315-329

Sedimentary structures in the middle–late Miocene to early Pliocene Misaki Formation, Miura Group, Miura Peninsula, Central Japan, were studied, and paleocurrent data were interpreted as the result of deep-sea bottom-current flow. These current data were further compared with present-day bottom currents in the northwestern Pacific region. The Misaki Formation is thought to be a forearc deposit within the Izu oceanic arc, and is composed of thick volcaniclastic beds interbedded with siliceous biogenic clayey sediments. Sedimentary structures showing paleocurrent directions are involved in the upper part of the volcaniclastic beds, in the pumiceous beds just above the volcaniclastic beds, and in the pelagic sediments. Based on paleomagnetic data suggesting considerable rotation of the beds, all the current directions were reconstructed to their original orientation. The paleocurrents are summarized into the following three groups. The first group in the volcaniclastic beds indicates southeast-directed paleocurrent directions. The second group in the upper parts of volcaniclastic beds and in some pumiceous beds exhibits a southwest- and northeast-directed paleoflow. The third group usually observed in the pumiceous beds with parallel lamination displays a northwest- or southeast-directed paleocurrent. The origin of each group's paleoflow direction is attributed to turbidity current, internal tidal current, and contour current influences, respectively. Present-day observations of the deep-sea northwest Pacific suggest that most of the bottom-current indicators in the Misaki Formation are related to North Pacific Deep Water, possibly Antarctic Bottom Water as well as a combination of tidal and local effects. It is concluded that the beds of the Misaki Formation were deposited in the proto-Sagami basin ca 9 Ma and were formed under weak bottom currents in a wide and flat basin during colder climatic conditions, whereas the beds dated at ca 6 Ma were deposited under strong bottom-current flow, and were then accreted to the Honshu arc.  相似文献   

Erratum to: Observational Study of Surface Wind along a Sloping Surface over Mountainous Terrain during Winter     

Young-Hee LEE  Gyuwon LEE  Sangwon JOO  Kwang-Deuk AHN 《大气科学进展》2022,39(10):1787-1787

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On the Type Species of Chusenella     

Y. C. HSU  GENUS Chusenella LEE 《地质学报》1942,(Z2):175-176

正 DIAGNOSIS: Test fusiform, slightly rounded at the ends; about 11.2 mm. long, 3.7 mm. wide, giving an axial ratio of about 1:3; whorl 9 to 10, the first three or four volutions closely coiled thence gradually evolute; spiral wall increases in thickness as the test grows, being 0.016 mm. in the firs  相似文献   

巴山夜雨   总被引：5，自引：1，他引：4  

吕炯 《气象学报》1942,(Z1)

君问归期未有期,巴山夜雨涨秋池。何常共剪西牕烛,却话巴山夜雨时?——唐李商隐夜雨寄北——……蜀江水碧蜀山青,聖主朝朝暮暮情;行宫见月伤心色,夜雨闻铃肠断声!……——唐白居易长恨歌——……暮雨向三峡,春江绕双流,今来一登望,如上九天游。——唐李白登锦城散花楼诗——万壑树参天,千山响杜鹃;山中一夜雨,树杪百重泉。……——唐王维送梓州李使君诗——  相似文献   

Some New Fossil Localities in the Eastern Tsinling     

YUEH-YEN LEE 《地质学报》1938,(Z1)

Ⅰ.INTRODUCTION The Tsinling range is situated in the central part of China and trendsin an east-west direction.Up to the present time,its extensions andboundaries have not yet been definitely defined and the term"EasternTsinling"used in the present paper is adopted from the previous work on  相似文献   

THE DEVELOPMENT OF THE UPPER YANGTZE VALLEY     

李春昱 《地质学报》1934,13(1)

GENERAL FEATURES. The Upper Yangtze valley includes the valleys of the main river and its chief tributaries. Chinshactiang (金沙江) and Yalungchiang (雅龍江) flow in north-south courses through Hsikang, Eastern Tibet, and turn to NEE  相似文献   

Three-Dimensional Computations of Multiple Tandem Jets in Crossflow     

肖洋李行伟  唐洪武YU Dae-Young 《中国海洋工程》2006,20(1):99-112

1 .IntroductionAn effective method of wastewater disposal in estuarine and coastal watersisto discharge partiallytreated effluentthrougha submerged multiport diffuserlocated atthe end of a sea outfall .Atypical dif-fuser designinvolves multiple jets all discharginginthe same direction awayfromthe shoreline ,per-pendicular to an alongshore ambient current to minimize the environmental impact .This is one type ofa multiple jet groupin crossflow(MJGC) . Whenthe jets are arrangedintandem,withthe…  相似文献