GIS支持的常州市区域经济空间集聚特征研究

以常州市为研究区域，运用特尔菲法选择反映区域经济社会发展的基本分析变量，通过主成分分析将其简化为概括性因子，然后采用GIS与统计软件动态集成的方法对其进行空间相关性分析，探讨常州市区域经济社会发展的空间集聚特征。     

青岛城区一次冰雹过程分析

利用常规探测和区域自动站、雷达等资料,分析了2007年5月28日发生在青岛市的冰雹天气过程,结果表明:这次冰雹天气是在高中低3层都有冷涡系统且呈前倾槽结构的天气背景下发生的;925 hPa的西南急流和中高层的不稳定都有利于冰雹云的形成;冰雹发生前,青岛城区上空低层大气逆温、逆湿,中层有干冷空气入侵,为冰雹云形成提供了有利的位势不稳定层结;造成5月28日青岛城区降雹的直接影响系统是超级单体雷暴,冰雹云的移动和冰雹落区与地面中γ尺度气旋相对应.     

庙岛群岛海域光棘球海胆生态的初步研究

庙岛群岛的光棘球海胆主要分布于北四岛（南、北隍城岛,大、小钦岛）,砣矶岛及大、小竹山岛等,而南五岛极少分布。砣矶岛的海胆多是２～３年生壳径４～６ｃｍ的个体,海胆性腺成熟期为７月中旬至８月中旬,性腺发育与水温、栖息场和饵料等有关。海胆体重随季节而变化,繁殖季节体重Ｗ（ｇ）与壳径Ｄ（ｃｍ）相关,Ｗ＝２．５８２Ｄ２．０３４（ｒ＝０．８７）,性腺重ＧＷ（ｇ）与壳径Ｄ（ｃｍ）关系为ＧＷ＝０．０４０３Ｄ３．０８２８（ｒ＝０．８２７３）,壳径Ｄ（ｃｍ）与壳高Ｈ（ｃｍ）呈线性关系Ｈ＝０．５２２５Ｄ＋０．０６６８（ｒ＝０．９０７８）。壳径生长随年龄而变慢,２．８ｃｍ的幼海胆年增长２．１ｃｍ;６．１ｃｍ的成海胆年增长０．４３ｃｍ。光棘球海胆嗜食海带和裙带菜,平均日摄食量６．０ｃｍ的海胆为２．６ｇ,４．０ｃｍ的为１．３４ｇ,３．１ｃｍ的为１．３ｇ,幼海胆摄食率较高的原因是因其生长发育快速,活动强度和代谢水平高。     

The Derivation and Validation of TBM Disc Cutter Wear Prediction Model

The problem of disc cutter wear is inevitable when shield or TBM excavating hard rock for a long distance, thus, the study of disc cutter wear model has an important project value on predicting its service life and replacement opportunity. It is put forward by analyzing disc cutter wear mechanism that the main wear form is abrasive wear, which is based on plastic removal mechanism. Then, disc cutter wear rate and linear wear rate prediction models are obtained by approximate calculation and mathematical deduction, which are based on Rabinowicz equation and CSM model. At last, the two models are verified through field test data from three projects, and the results show that the prediction model can accurately reflect the real wear situation of disc cutter.     

Magma underplating and Hannuoba present crust-mantle transitional zone composition: Xenolith petrological and geochemical evidence

Studies on the deep-seated xenoliths from global volcanoes reveal that the present petrological crust-mantle boundary between the lower crust and the upper mantle actually is a transitional layer from mainly mafic granulites to ultramafic spinel lher-zolites[1,2], i.e. a transitional zone distinctive from the seismological Moho[3]. Oceanic lithosphere crust- mantle transitional zone can be established from the study on the exposed ophiolites. However, as for the continental lithosphere, since …     

东北及内蒙古东部地区显生宙构造演化的有关问题

以国家油气资源战略选区项目研究成果为基础,结合近年来该区积累的大量区域地质调查资料和已发表的数据,对东北及内蒙古东部地区早古生代以来的大地构造性质及其演化进行综合对比分析。东北地区晚古生代以来的构造演化以稳定的大陆地块为主体,而非两大板块间多岛洋演化形成的造山带。东北地区的各地块均具有前寒武纪—早前寒武纪、甚至是太古宙的古老基底,它们在早古生代早期(490～510Ma)同时遭受了区域变质作用和花岗质岩浆侵入。350～450Ma,各地块均处于相对稳定的构造环境,以普遍缺失这一时期的花岗质岩浆活动记录为标志。从早古生代晚期开始,东北及内蒙古东部地区至少已存在2个早古生代早期固结的微陆块,即额尔古纳—兴安微陆块和松嫩—佳木斯微陆块,这2个微陆块向北分别与俄罗斯境内的额尔古纳微陆块和布列亚微陆块相连。二者在早石炭世沿北北东向展布的开鲁—嫩江—黑河—诺拉—索霍提(Nora-Soukhotin)一线碰撞拼合,形成统一的东北亚晚古生代大陆板块。西拉沐伦河断裂西端被北北东向构造所截,向东延至开鲁—嫩江断裂,并没有延伸到松辽盆地内,说明西拉沐伦河断裂可能与开鲁—嫩江碰撞带的形成有关。从晚石炭世开始,东北亚大陆板块整体处于伸展构造背景,至少在中国境内具有北陆南海的构造-沉积古地理格局,早期发育以火山岩为主的断陷盆地,到中二叠世演化成一个规模巨大的海相沉积盆地。中生代以来,东北地区的构造体制转换及物质成分演化不仅仅是古亚洲洋构造域和西太平洋构造域叠加转换的结果,蒙古—鄂霍茨克构造域的演化对该区现今构造体制的形成也具有重要影响。地质和地球物理综合证据显示,大兴安岭北部的得尔布干断裂、内蒙古中部的贺根山断裂和黑龙江省东部的跃进山断裂可能并不是具有一定深度规模的构造分区断裂。东北地区的中、新生代盆地之下并非都是变质结晶基底,而是存在一个规模巨大的晚古生代海相沉积盆地。     

最优化因子处理及加权多重回归模型

因子的优劣是回归分析的关键。故在建立回归方程时,一般除对预报因子进行直线相关普查外,还要进行非线性相关普查。如将原因子x用x~(-1)、x~(1/2)、x~2 、e~x、In x等函数形式进行变换。但由于这些函数形式有限,故不一定能找到最优的表达形式;为此冯耀煌等仅给出了x~a和e~(ax)两种通式,其中a为待     

强震类型划分和后续强震预测方法探索

地震能量、振幅与周期的关系,由震源性质决定,因而其相关程度可作为强震类型划分的指标．初步将强震划分为主余震、双主震和强震群型3类．同类型强震在震源性质定量指标上有相似性,且有一定重复性．它们可为后续强震预测提供依据．从1988～1997 年50多例CDSN宽频带（BPZ波）强震记录中,分析得出的后续强震预测参考指标,对分型预测法应用有参考价值．     

A remote sensing environmental study of Haiko Bay——Ⅰ Tidal influx and its changes

Through the water areas extracted from remote sensing images and the combination of the methods for establishing the formula for calculating tidal influx with tidal data, the tidal influx of the Haikou Bay, Hainan Province was found to be 5.14×10⁷m³ in 1990, 5.80×10⁷m³ in 1984 and 5.05×10⁷m³ in 1965, respectively.After the analysis of the morphological and tidal range factors which determine tidal influx, this paper presents the trend of the changes in tidal influx caused by the changes in the morphological factors of the Haikou Bay.It is found that a decreasing trend was shown with a depressive rate of 2×10^-3during the period from 1965 to 1984, and an increasing trend with an incremental rate of 1×10^-3 during the period of 1984-1990.The main reason for the appearance of the decreasing trend before 1984 is the natural deposition and silting-up of the bay sediments; after 1984, the dredging and expansion of the Haikou Port and the Haikou New Port which caused an increase in water area at the mean low tide are the leading factor which causes the increase in tidal influx.