由地面重力数据确定扰动位径向二阶梯度

提出利用地面重力异常数据计算地面扰动位径向二阶梯度，将该梯度的积分表达式转换为卷形式的谱表达式，便于应用ＦＦＴ／ＦＨＴ技术进行快速计算。     

Zawiercia—Rzeszotar岩石圈缝合线性质的深大断裂对古生代矿化作用…

对深部岩浆和矿化现象的研究，证明了Ｚａｗｉｅｒｃｉａ－Ｒｚｅｓｚｏｔａｒ断层属于通到岩石圈下部边界缝合线性质的区域性深大断裂。断裂形成于上志留造山运动的碰撞，并把现在叫上西里西亚煤盆的段块和小波兰地块焊接在一起。断裂形成后的地质发展史看出由于焊接的不完善和愈合的薄弱，造成了裂隙的不时张开关不断发生岩浆活动和金属的矿化现象。     

海参食用兴衰史

在中国可食用的所有海产品中．海参的食用历史可能是最短的。两宋时期，没有食用海参的记载。吴自牧的《梦梁录》中．只有对干贝、燕窝的记载。宋李肪等编纂的《太平广记》收集了自汉至宋初的野史500卷，在其卷十“水族”中，提到的水产类食品61种，未见海参。只是在《明宫史》中，才见到对海参烹饪的详细描述。据说，明熹宗喜欢将炙蛤、鲜虾．燕窝、鲨鱼翅、海参诸海味十余种共烩一处食之。而几乎同时的号称中国五大奇书之一的《金瓶梅》的众多饮食谱中．却未见海参的菜式。按理说，《金瓶梅》故事发生在徐州，而徐州靠海并不很远．又地处京杭大运河南北交汇点．曾是交通枢纽与商埠重镇。如果海参已入菜，那么．拥有金、瓶．梅等5个妻妾的西门庆不会吃不起，也不会买不到，可见，当时海参还只是一种宫廷食品。     

鲸鲨双霸 谁主沉浮

在人类眼中看来。大白鲨是大海中最可怕的食肉动物。但是在鲨鱼眼中。对它们自己能否称得上海中霸主也许别有一番“见解”。     

Geochemical survey of thermal system in Northeast China and their geothermometric characters

The chemical composition of several thermal springs around Changbaishan area has been investigated. Cenozoic basaltic rocks are widely distributed in Northeast China and geothermal characteristics have been described. About one hundred hot springs exist around Changhaishan Volcano at the border between China and D.P.R.Korea with high temperature about 82~C. The pH values of the spring water range from 6.9 to 7.1 and the total flow rate is about 4.8 L/sec. The chemical composition of the thermal springs is sodium carbonate; the high-mineral contents of thermal water are believed to have medicinal properties. Bathhouses are already built along the hot springs to take the advantage of the supposed healing properties. The high quality of those hot springs is believed to be utilitized for mineral water. The chemical equilibrium temperatures were estimated at about 160℃ based on the Na-K-Ca geochemical thermometer.     

苏联经济区方案定量研究的经验

通常,经济区划的任务包括以下几个主要阶段:1) 确定作为基础区的地域;2)按照基础区选择区划指标系统及其定量评价;3) 选择区域系统模式;4) 阐明课题建立算法,直接把基础区进行分类计算;5)解释已获得的结果,选出最好的区划方案和有关进一步改善工作方法的结论等等。基础区的范围视所要解决的任务性质而定。     

太平洋命名的历史

在一个风帆远航为海上最快速交通工具的时代里,大陆和海洋向着不可知的远方延伸着,人类显然无法测定各大海域的界限。在一些有关混沌初开的神话传说里,人类深感大海的浩渺辽阔,以人类自身的渺小,如何给这片无边无际的永恒大海命名呢?     

Does sediment grain size affect diatom grazing by harpacticoid copepods?

Estuarine soft sediments support a diverse group of eukaryotic and prokaryotic organisms though the role of the sediment per se for the functioning of these organisms remains largely unknown. The present study aimed to test the effect of sediment grain size on the grazing activities of harpacticoid copepods. In controlled experiments, two common intertidal harpacticoid species (Paramphiascella fulvofasciata and Nitokra spinipes) were each offered a mix of two benthic diatom species (Navicula phyllepta and Seminavis robusta) in different sedimentary conditions. Several microcosms were created using a variety of sediment types, including fine silt (<63 microm), coarser grained sands (125-250, 250-450, 100-300 microm), artificial 'sediments' of glass beads (250-500, 2000 microm) and even the absence of sediment was tested. The diatoms were enriched in the stable carbon (13)C to facilitate tracing in the harpacticoids. Both copepod species were able to graze on the diatoms with highest uptake when sediment was absent. In contrast, both harpacticoid species showed no uptake in silty conditions. In general, grazing was favoured when mean sediment grain size increased. The strong negative effect of fine grains on the grazer's efficiency can be explained by the resulting differences in the structure (and accessibility) of the diatom biofilm on the one hand and the mobility of the grazer on the other hand. In view of the subtle equilibrium between primary producers and grazers, these results might have important implications for the effect of siltation of tidal flats due to, e.g., human activities.