ON THE OCCURENCE OF A MONGOLIAN EOCENE PERISSODACTYLE IN THE RED SANDSTONE OF SICHUAN, S. W. HONAN.

In addition to the Turtle Sinohadrianus described by Dr. C. Ping in the Bulletin of the Geological Society of China Vol. Ⅷ, pp. 231—238, the material collected by Mr. C. Li, of the National Institute of Geology, Shanghai,     

GEOLOGICAL OBSERVATIONS IN NORTHERN MANCHURIA AND BARGA (HAILAR).

During a spring trip made the last year (1929) in the Chang Chun, Harbin and Hailar districts, opportunity was given to us to collect some facts which may help to link the Chinese to the Manchurian or East Mongolian     

ON THE CENOZOIC FORMATIONS OF KWANGSI AND KWANGTUNG

The chief Cenozoic formations of Kwangsi and Kwangtung have alreadybeen recognised and largely described,first by Richthofen,and later by severalgeologists who,in the course of the few past years,have made an extensivesurvey of this part of China~1.     

THE BASE OF THE PALAEOZOIC IN SHANSI.METAMORPHISM AND CYCLES.

I had recently an opportunity for observing, along the western border of the northern Hoshan (Central Shansi), at the base of the Palaeozoic, a particularly clear section, in which several interesting features seem to be worth mentioning. This section, illustrated in the text-figure 1, was taken at the entrance     

斯里兰卡近岸风暴潮模拟中风暴潮-潮汐相互作用特征分析:一个个例研究

利用三维普林斯顿海洋模型（POM）以及逐时水位观测数据,研究印度洋北部斯里兰卡北部海岸风暴潮-潮汐相互作用特征.选择了2008年的"Nisha"台风作为台风风暴潮个例进行研究,并进行了3个数值敏感性试验.经验证,该风暴潮模型可以很好地再现该台风期间研究区域内的潮汐和总海水水位.试验结果表明,沿斯里兰卡西北海岸的风暴潮-潮汐相互作用显著,其强度与台风的强度和轨迹相关.当TC在42 h达到较大强度时,可以得到风暴潮-潮汐相互作用导致的最大增水值TSI （0.6 m）和从印度洋外海向斯里兰卡西北部浅滩流入的最大相互作用流场.在TC强度较弱的第30小时,得到最大负TSI （-0.6 m）和向南流出西北部浅水区域的较弱的相互作用流场.在整个台风期间,强TSI都发生在斯里兰卡西北部海滩到对岸的印度洋近岸区域.     

应用各种示踪剂研究岩溶泉系统的补给边界

应用三种化学示踪剂,对桂林岩溶水文地质试验场“31号泉系统”的补给边界进行了研究。试验在雨期进行,示踪剂分别是降雨后投入落水洞随表层岩溶水带入地下;或在降雨前投入无水的落水洞中,待降雨后由地表产流带入地下。 试验表明,氯化锌、钼酸铵是较理想的示踪剂,地下水速度为4～250米/小时,速度差可能是由于包气带岩溶含水介质渗透性和水力坡度不同所致;泉口历时浓度曲线常呈多峰型,多是由于降雨脉冲影响所致;峰丛区高程不等的洼地多通道补给山边泉,峰丛区含水介质结构具有叠置性,即水平方向多通道,垂直方向多层次,故水均衡计算不可忽视;“31号泉系统”的补给边界,通过圈定有水力连系之洼地的地表分水岭来确定。      

Data-driven Simulations of Magnetic Field Evolution in Active Region 11429:Magneto-frictional Method Using PENCIL CODE

Coronal magnetic fields evolve quasi-statically over long timescales and dynamically over short timescales.As of now there exist no regular measurements of coronal magnetic fields,and therefore generating the coronal magnetic field evolution using observations of the magnetic field at the photosphere is a fundamental requirement to understanding the origin of transient phenomena from solar active regions(ARs).Using the magneto-friction(MF)approach,we aim to simulate the coronal field evolution i...