Understanding the effects of mantle compressibility on geoid kernels     

Svetlana V. Panasyuk  Bradford H. Hager  Alessandro M. Forte 《Geophysical Journal International》1996,124(1):121-133

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Viscoelastic relaxation of a Burgers half-space: implications for the interpretation of the Fennoscandian uplift     

Georg Rumpker  Detlef Wolff 《Geophysical Journal International》1996,124(2):541-555

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The effects of a composite non-Newtonian and Newtonian rheology on mantle convection   总被引：1，自引：0，他引：1  

Arie P. van den  Berg  Peter E. van  Keken David A. Yuen 《Geophysical Journal International》1993,115(1):62-78

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Glacial rebound of the British Isles—I. Preliminary model results     

Kurt Lambeck 《Geophysical Journal International》1993,115(3):941-959

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A Boussinesq Equation-Based Model for Nearshore Wave Breaking     

余建星 张伟王广东  杨树清 《中国海洋工程》2004,18(2):315-320

Based on the wave breaking model by Li and Wang (1999), this work is to apply Dally‘ s analytical solution to the wave-height decay instead of the empirical and semi-empirical hypotheses of wave-height distribution within the wave breaking zone. This enhances the applicability of the model. Computational results of shoaling, location of wave breaking, wave-height decay after wave breaking, set-down and set-up for incident regular waves are shown to have good agreement with experimental and field data.  相似文献   

海藻多糖分子量及其分布测定Ⅰ——“872”样品分子量的测定和K·α常数的标定     

范慧红  管华诗  周如真 《中国海洋大学学报(自然科学版)》1992,(Z1)

对海洋多糖类药物—“872”样品,采用乙醇沉淀分级法得到的5个不同分子量级份(Ⅰ～Ⅴ)。以粘度法测定5个级份特性粘数[η];用激光小角光散射仪(LALLS仪)测定了各级份的重均分子量M_w和第二维利系数A_2;标定出“872”样品的Mark Houwink公式。测得872样品各级份/特性粘数。  相似文献   

Evaluation of a numerical model of the British–Irish ice sheet using relative sea‐level data: implications for the interpretation of trimline observations     

Joseph Kuchar  Glenn Milne  Alun Hubbard  Henry Patton  Sarah Bradley  Ian Shennan  Robin Edwards 《第四纪科学杂志》2012,27(6):597-605

The glacial isostatic adjustment (GIA) of the British Isles is complex due to the interplay between local and non‐local signals. A number of recent studies have modelled the GIA response of the British Isles using relative sea‐level data. This study extends these previous analyses by using output from a numerical glaciological model as input to a GIA model. This is a necessary step towards more realistic GIA models, and although there have been similar studies for the major late Pleistocene ice sheets, this is the first study to do so for the British Isles. We test three reconstructions, classed as ‘minimal’, ‘median’ and ‘maximal’ in terms of their volume at maximum extent, and find it is possible to obtain good data–model fits. The minimal reconstruction is clearly preferred by the sea‐level data. The ice reconstructions tested were not constrained by geomorphological information of past ice extent (lateral and vertical). As a consequence, the reconstructions extend further than much of this information suggests, particularly in terms of ice thickness. It is notable, however, that the reconstructions produce good fits to many sea‐level data from central, mountainous regions (e.g. Scottish highlands), which lends support to the suggestion that trimlines, often used as an constraint on the palaeo ice surface location, are in fact features formed at the transition from warm‐ to cold‐based ice and so mark a minimum constraint on the ice surface altitude. Based on data–model misfits, suggestions are made for improving the ice model reconstructions. However, in many locations, the cause of the misfit could be due to non‐local, predominantly Fennoscandian ice and so interpretation is not straightforward. As a result, we suggest that future analyses of this type consider models and observations for both Fennoscandia and the British Isles. Copyright © 2012 John Wiley & Sons, Ltd.  相似文献   

Rheological Properties of Fractal Deformation in Multilayer Folds     

HOU Guiting 《《地质学报》英文版》2009,83(3):544-549

Abstract: The fractal dimensions of folds are related to layer thickness and viscosity of the multilayer. This paper discusses how the thickness, viscosity, and anisotropic degree affect the rheological deformation of fractal folds in multilayers. The number of layers, their thicknesses, viscosities, and anisotropic degree of multilayers cooperate to affect the rheological deformation of folds, which is not controlled by a single rheological factor. A greater anisotropic degree of multilayers is favorable to develop the more complex and disharmonious fractal folds.  相似文献   

高温硅酸盐熔体粘度与网络分数维值的相关性研究   总被引：1，自引：0，他引：1  

徐培苍  李如璧  尤静林 《地球化学》2005,34(3):291-296

对高温硅酸盐熔体粘度的估算一直是国际地学界热点问题之一,本文在研究了高温硅酸盐熔体网络分数维值的基础上,建立了估算熔体粘度的新模式 (简称 FD模式 ) ,阐明了熔体粘度值除了与温度成反比外,还与分子网络介观尺度的自相似比 ri 和分数维值 D相关,即与分子网络 (纳米尺度以上 )中的桥氧数 Ni成正比 (Ni∝ ) , 与单位硅氧四面体中的非桥氧数成反比.经对 4个硅酸盐系列高温熔体的粘度测定证实, FD模式的理论计算值与实测值吻合,且优于现今国际通用的 VTF模式.为探索岩浆迁移演化规律和完善新型低维材料的性能提供了新的理论依据.  相似文献   

川滇地区重力场特征与地壳变形研究   总被引：10，自引：0，他引：10  

钟锴  徐鸣洁  王良书  刘绍文  丁增勇 《高校地质学报》2005,11(1):111-117

对川滇地区重力场特征进行了研究,获得了研究区内地壳厚度分布及变形特征。总体上,研究区内地壳厚度从西北向东南逐渐减小。川滇菱形块体中内部出现了广泛的地壳增厚现象,并可能一直延伸至菱形块体的最南端。丽江-小金河断裂带在重力场特征上表现为龙门山断裂带向西南的延伸,其东侧主体构造走向等特征与扬子地块一致,推测丽江-小金河断裂带与龙门山断裂、红河断裂带一起构成了扬子地块的西边界。滇西地区布格重力一阶导数与现今地壳变形格局总体一致,主体构造方向为北北西-近南北向,代表了“新”构造主体构造线的方向;上延至45km后,主体构造上转变为以近东西向为主。  相似文献