The Analysis of CO_2 Influence Factors in Tianquan Cave of Xingwen World Geopark     

SHUI Wei HU Yi ZHANG Bing SU Zheng-an WANG Chen-yi REN De-you XU Xue-yi CHENG Jin-ping 《四川地质学报》2009,(Z1):1-6

A Vaisala CARBOCAP Hand-Held Carbon Dioxide Meter GM70 was used to measure CO 2 concentration in Tianquan cave of Xingwen world Geopark.The study was done in Tianquan cave during July and August,2008.Data sources include the influence factors of distribution of CO 2:elevation,tourists,cross section and depth of the cave.Results indicated tourists have strong impacts on the CO 2 concentration,while no significant differences could be found among different elevation.Furthermore,significant correlation could be found among the depth of cave,the small cross section,the tourist’s construction and the CO 2 concentration.Those results indicate that the CO 2 concentration in Tianquan cave has no threat to the health of tourists.The results and the data provide a scientific basis for the protection of people’s health and the exploitation of cave tourism.  相似文献   

Cambrian integrative stratigraphy,biotas, and paleogeographical evolution of the Qinghai-Tibetan Plateau and its surrounding areas     

Zhixin SUN  Lang SUN  Fangchen ZHAO  Bing PAN  Malik Muhammad Saud Sajid KHAN  Shehryar AHMED  Chuan YANG  Lanyun MIAO  Zongjun YIN  Guoxiang LI  Maoyan ZHU 《中国科学:地球科学(英文版)》2024,(4):950-970

The Qinghai-Tibetan Plateau and its surrounding areas have a long and complex tectonic evolutionary history.Cratons and blocks, such as northern India, Lhasa, Qiangtang, Qaidam and Central Qilian, and their in-between orogenic belts constitute the main part of the Qinghai-Tibetan Plateau. During the Cambrian Period, most of these cratons and blocks were on the northwestern periphery of Gondwana, and were associated with the surrounding blocks, e.g. Arabian, Central Iran, Afghanistan, Tarim, Alxa...  相似文献   

Wave shoaling and diffraction in current over a mild-slope   总被引：2，自引：2，他引：0  

LI Yucheng  LIU Deliang  CHEN Bing  LI Linpu 《海洋学报(英文版)》2004,23(4):741-746

The wave relative frequency in the coordinate system moving with current and the angle between the direction of wave propagation and that of current are computed based on the wave dispersion relation. The current field is computed by solving the depth averaged shallow water equations. The wave field is computed by solving the mildslope equation which has taken the current‘s effect into account. A numerical model is established using a finite element method for simulating the wave shoaling and diffraction in current over a mild-slope, and the numerical results are reasonable to compare with the experimental data.  相似文献   

Water masses classification of the upper layer in the Equatorial Western Pacific using ISODATA of fuzzy cluster     

Chen Shangji  Du Bing 《海洋学报(英文版)》1990,9(2):187-201

-In this paper,by using ISODATA of fuzzy cluster,the water masses classification of the upper layer in the E-quatorial Western Pacific is carried out. On the basis of the degree of the membership in the obtained optima) classification matrix, the solid distribution of the detailed structure of water masses is made. The water of the upper layer,consisting of six water masses,may be divided into three layers,i, e. ,the surface,subsurface and intermediate layer. Besides analyzing the features of various water masses,a discussion on their distribution structure and formation mechanism is also made.  相似文献   

Composition index of n-alkanes and paleoenvironmental study in sediments of the Arctic     

Lu Bing  Zhou Huaiyang  Wang Zipan  Lu Douding 《海洋学报(英文版)》2001,20(4):535-551

INTRODUcrIO\The Arctic plays a tyP1cal role 1n regulating the global climate. AlthOugh it is 1ocated inthe high latitude with extremely low temperature similar to that of the isolated continent of theAntarctic, it is surrounded by land where Eskimo lives. The stirrounded land of North Pole be-longs to the tetritory of me countries of EuroPe, Asia and North AInerica. Thus ecologicaland natural enviroament in the AIctic and sub--arctic area has much closer interactions withrnankind cor…  相似文献   

Application of long-chain alkenones and U_(37)~k values for paleotemperature estimation in the Arctic Chukchi Sea-Bering Sea area     

Lu Bing  Chen Ronghua  Wang Zipan  Chen Jianfang  Liu Zhensheng . Key Laboratory of Submarine Geosciences  Second Institute of Oceanography  State Oceanic Administration  Hangzhou  China 《海洋学报(英文版)》2001,(3)

lwnoowrlowIt is a hot spot in the world to carry out palcoocean and paleo-climate studies by using sur-face sediments. One of the direct effects of the global clirnate changes or short Periedic abnor-mal clirnate events is the variety of sea surface temPerature (wr). Increase or deCrease of theSST wil1 have certainly imPact, the unsaturate ratio (U)v) of long-chain alkenones (LCA)compe Of planktonic algae. The ratio Ulv records the information of SST changes, whichwill be entirely and or…  相似文献   

Application of long-chain alkenones and U₃₇^k values for paleotemperature estimation in the Arctic Chukchi Sea-Bering Sea area     

Lu Bing  Chen Ronghu  Wang Zipan  Chen Jianfang  Liu Zhensheng 《海洋学报(英文版)》2001,20(3):371-381

-Long-chain alkenones were detected in samples of sea surface sediments from the Chukchi Sea and the Bering Sea areas, the Arctic Pole. The analysis result indicates that C37:3 methylketone is pre dominate in the long-chain alkenones from the Chukchi and Bering Sea sediments. The abundance of C37to C39 unsaturated alkenones changes in an order of C37 ＞C38 ＞C39. Based on ∑37/∑38 ratio, the de tected organism precursors of the long-chain alkenones are mainly coccolithophrid (Emiliania huxleyi).By the calibration relationship between U3k7 and U37k indices, the sea surface paleotemperature in these seas is estimated. The estimated values of U37k vary from 4.147℃ to 5. 706℃, with a mean value of 5.092℃.  相似文献   

Devonian Bivalve Faunas, Life-habits, and Biodiversity Changes in Guangxi, South China     

YAO Huazhou  ZHANG Renjie  TU Bing  YAN Daoping  TANG Zhaoyang 《《地质学报》英文版》2016,90(1):378-379

正Objective The Devonian bivalves are well developed,highly diversified and widely distributed in Guangxi.However,they have not been well studied previously,although several papers have dealt with it.Meanwhile,the biodiversity change of bivalves which is one of the most important benthos during Devonian in South China has not been studied yet.The aim of present project is focused on the study of systematic palaeontology,the life-habits,  相似文献   

Discovery of Palaeozoic Karsts in the Qaidam Basin and Their Oil and Gas Prospects     

PENG Bo  LIU Chenglin  LI Zongxing  MA Yinsheng  CAO Jun  WANG Bing  ZHANG Xu 《《地质学报》英文版》2016,90(5):1919-1920

正Objective Complex geological factors have been constraining the oil and gas exploration in the Paleozoic strata of the Qaidam Basin,although there are high-quality hydrocarbon source rocks.One of the most important reasons may be reservoir densification due to the multiple stages of destructive cementation,which has hindered our understanding of the Paleozoic petroleum enrichment rules in the Qaidam basin.In recent years,the petroleum  相似文献   

Development and Extension of An Aggregated Scale Model: Part 2 – Extensions to ASMITA     

Ian TOWNEND  Zheng Bing WANG  Marcel STIVE  Zeng ZHOU 《海洋工程》2016,(5):651-670

Whilst much attention has been given to models that describe wave, tide and sediment transport processes in sufficient detail to determine the local changes in bed level over a relatively detailed representation of the bathymetry, far less attention has been given to models that consider the problem at a much larger scale (e.g. that of geomorphological elements such as a tidal flat and tidal channel). Such aggregated or lumped models tend not to represent the processes in detail but rather capture the behaviour at the scale of interest. One such model developed using the concept of an equilibrium concentration is the Aggregated Scale Morphological Interaction between Tidal basin and Adjacent coast (ASMITA). In a companion paper (Part 1), we detail the original model and provide some new insights into the concepts of equilibrium, and horizontal and vertical exchange that are key components of this modelling approach. In this paper, we summarise a range of developments that have been undertaken to extend the original model concept, to illustrate the flexibility and power of the conceptual framework. However, adding detail progressively moves the model in the direction of the more detailed process-based models and we give some consideration to the boundary between the two.  相似文献