检索结果-南通市图书馆

Assessment of precipitation type discrimination methods on glacier of qilian Mountains

Journal of Mountain Science 2023年第12期20卷 3476-3487页

作者： CHEN Ji-zu DU Wen-tao KANG Shi-chang QIN Xiang SUN Wei-jun JIANG You-yan SUN Wen-xuan qilian shan station of glaciology and Eco-environment State Key Laboratory of Cryospheric ScienceNorthwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China College of Geography and environment Shandong Normal UniversityJinan 250014China Gansu Provincial Industry Technology Center of Intelligent Equipment and Big Data for Disaster Prevention Northwest Institute of Eco-Environment and ResourcesChinese Academy of Science(CAS)Lanzhou 730000China Lanzhou Regional Climate Center Lanzhou 730020China 5 Zhangye Meteorological BureauZhangye 734000China Zhangye Meteorological Bureau Zhangye 734000China

Solid precipitation is not only the main supply for glacier mass,but also exerts an important influence on surface albedo and intensifies glacier ***,precipitation type observation is very scarce in the high alpine glaciers,which limits the precise simulation of glacier mass *** study assessed three discrimination methods of precipitation types including Ding method,Dai method and Froidurot method based on surface albedo observation data on the Laohugou Glacier No.12(LHG Glacier)in western qilian *** results showed that Ding method had a best applicability on the LHG Glacier,the other two need to calibrate parameters when they are used in the high elevation glacier *** we fitted the relationship between snowfall probability and fresh snow albedo,and put forward a revised formula to simulate fresh snow albedo based on Ding method,which is expected to reduce the uncertainty in glacier mass and energy balance ***,we found a best air temperature threshold of 4℃for discriminating monthly precipitation *** order to accurately simulate the glacier melt,it is necessary to obtain the threshold temperature appropriately in different glacier region with different elevation and humidity.

关键词： Precipitation type Surface albedo Laohugou Glaicer No.12 Glacier melting

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Potential Effect of Black Carbon on Glacier Mass Balance during the Past 55 Years of Laohugou Glacier No. 12, Western qilian Mountains

引用

Journal of Earth Science 2020年第2期31卷 410-418页

作者： Jizu Chen Xiang Qin Shichang Kang Wentao Du Weijun Sun Yushuo Liu qilian shan station of glaciology and ecological environment State Key Laboratory of Cryospheric SciencesNorthwest Institute of Eco-Environment and ResourcesChinese Academy of Sciences(CAS)Lanzhou 730000China CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing 100085China College of Geography and environment Shandong Normal UniversityJinan 250014China

This study reconstructed the annual mass balance(MB)of Laohugou Glacier No.12 in the western qilian Mountains during 1961–*** annual MB was calculated based on a temperature-index and an accumulation model with inputs of daily air temperature and precipitation recorded by surrounding meteorological *** model was calibrated by in-situ MB measurements conducted on the glacier during 2010–*** in constructed annual MB had three *** Phase Ⅰ(1961-1984),glacier-wide MB values were slightly positive with an average MB of 24±276 mm w.e.(water equivalent).During Phase Ⅱ(1984-1995),the MB values became slightly negative with an average MB of?50±276 mm w.e..The most negative MB values were found during Phase Ⅲ(1996–2015),with an average MB of?377±276 mm *** analysis showed that the warming led to accelerated glacier mass loss despite a persistent increase of precipitation during the analysis ***,an increase of black carbon deposited on the glacier surface since the 1980s could have contributed to intensified glacier *** simulations and measurements of MB on the Urumqi Glacier No.1,26%of glacier melt caused by black carbon could be identified.

关键词： Laohugou Glacier No.12 climate change temperature-index model mass balance black carbon

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Variations of Laohugou Glacier No.12 in the western qilian Mountains, China, from 1957 to 2015

引用

Journal of Mountain Science 2018年第1期15卷 25-32页

作者： LIU Yu-shuo QIN Xiang CHEN Ji-zu LI Zhen-lin WANG Jing DU Wen-tao GUO Wan-qin State Key Laboratory of Cryospheric Science Northwest Institute of Eco-Environment and Resources Chinese Academy of Sciences qilian shan station of glaciology and Ecologic environment Northwest Institute of Eco-Environment and Resources Chinese Academy of Sciences Geomatics Center of Gansu Province Gansu Bureau of Surveying Mapping and Geoinformation

Glaciers were solid reservoirs and important water resources in western China,but they were retreating significantly in context of global *** Glacier No.12 was the largest valley glacier in qilian *** this study,realtime kinematic(RTK)data,topographic map and World View-2 satellite imagery were used to measure changes in terminus,extent and volume of Laohugou Glacier *** showed that Laohugou Glacier No.12 was shrinking significantly since ***1960 to 2015,the terminus reduction of Laohugou Glacier No.12 was 402.96 m(3.99%)in total,and glacier length decreased to 9.7 km from 10.1 *** of glacier area and volume were the most *** 1957 to 2015,glacier area and volume decreased by 1.54 km^2(7.03%)and 0.1816 km^3,*** trend of terminus and area was slowing in 1950-1980s,even stable for a period in the mid-1980s,and then *** core analysis result and nearly meteorological station data shown an increasing trend of temperature in 1957-2015,it was a main reason of continuous retreating of Laohugou Glacier No.12.

关键词：冰河西方中国水资源上下文运动学 RTK 山谷

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Chemical Characteristics and environmental Records of a Snow-Pit at the Glacier No.12 in the Laohugou Valley, qilian Mountains

引用

Journal of Earth Science 2014年第2期25卷 379-385页

作者： Xiaoqing Cui Jiawen Ren Xiang Qin Weijun Sun Guangming Yu Zebin Wang Weigang Liu State Key Laboratory of Cryospheric Science Cold and Arid Region Environment and Engineering Research InstituteChinese Academy of Sciences qilian shan station of glaciology and Ecologic environment Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province Institute of Arid MeteorologyChina Meteorological Administration

In June 2006, samples were collected from a 90 cm snow-pit at an elevation of 5 040 m a.s.l, in the northern branch firn basin of the Glacier No. 12, Laohugou Valley, in the western part of qilian Mountain, China. Oxygen isotopes （6180） and major soluble ions were measured. Results showed that Ca2＋ is the dominant cation, and SO42 is the dominant anion. All major ions have close positive correlations with eachother except NO3 and NH4＋. 6180 show positive correlation with air temperature. The method of correlation analysis, sea-salt ion tracer and trend analysis were used to determine the source of the chemical components. The correlation analysis and HYSPLIT backward trajectory analysis suggest that atmospheric soluble dust species dominate the chemical signature.

关键词： snow-pit glaciochemistry Glacier No. 12 at Laohugou ion qilian Mountain.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Review of pre-processing technologies for ice cores

引用

Journal of Mountain Science 2018年第9期15卷 1950-1960页

作者： DU Wen-tao KANG Shi-chang QIN Xiang SUN Wei-jun ZHANG Yu-lan LIU Yu-shuo CHEN Ji-zu qilian shan station of glaciology and Ecologic environment State Key Laboratory of Cryospheric ScienceNorthwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing 100101China University of Chinese Academy of Sciences Beijing 100049China College of Population Resources and EnvironmentShandong Normal UniversityJinan 250014China

High-resolution ice core records covering long time spans enable reconstruction of the past climatic and environmental conditions allowing the investigation of the earth system's evolution. Preprocessing of ice cores has direct impacts on the data quality control for further analysis since the conventional ice core processing is time-consuming, produces qualitative data, leads to ice mass loss, and leads to risks of potential secondary pollution. However, over the past several decades, preprocessing of ice cores has received less attention than the improvement of ice drilling, the analytical methodology of various indices, and the researches on the climatic and environmental significance of ice core records. Therefore, this papers reviews the development of the processing for ice cores including framework, design as well as materials, analyzes the technical advantages and disadvantages of the different systems. In the past, continuous flowanalysis(CFA) has been successfully applied to process the polar ice cores. However, it is not suitable for ice cores outside polar region because of high level of particles, the memory effect between samples, and the filtration before injection. Ice core processing is a subtle and professional operation due to the fragility of the nonmetallic materials and the random distribution of particles and air bubbles in ice cores, which aggravates uncertainty in the measurements. The future developments of CFA are discussed in preprocessing, memory effect, challenge for brittle ice, coupling with real-time analysis and optimization of CFA in the field. Furthermore, non-polluting cutters with many different configurations could be designed to cut and scrape in multiple directions and to separate inner and outer portions of the core. This system also needs to be coupled with streamlined operation of packaging, coding, and stacking that can be implemented at high resolution and rate, avoiding manual intervention. At the same time, information

关键词：预处理技术冰核评论地球系统数据质量控制优化操作高分辨率时间跨度

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A preliminary study on measurements of black carbon in the atmosphere of northwest qilian shan

引用

Journal of environmental Sciences 2012年第1期24卷 152-159页

作者： Shuyu Zhao Jing Ming Cunde Xiao Weijun Sun Xiang Qin State Key Laboratory of Cryospheric Sciences Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of SciencesGansu 730000China China National Climate Center Beijing 100081China qilian shan station of glaciology and Ecologic environment Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of SciencesGansu 730000China

Black carbon （BC） concentration and meteorological data are measured discontinuously from May 2009 to March 2011,at the qilian shan station of glaciology and Ecologic environment （hereafter ＂QSSGEE＂）,located near the terminal of the Laohugou No.12 Glacier in northwestern qilian shan,*** measured the daily,monthly and seasonal variations of BC concentration in the atmosphere and discussed the possible emission *** carbon background concentration in this region varied in the range of 18–72 ng/m 3 with the highest in summer and the lowest in *** relations between BC concentration and surface wind direction indicated that BC concentration was higher when northwest wind prevails while lower when southeast wind *** masses backward trajectories showed the potential emission sources in the *** positive correlations between daily mean BC concentration and relative humidity indicated that BC might be one of important cloud condensation *** hypothesis needs to be confirmed further through cloud microphysical features in this region.

关键词： black carbon qilian shan cloud condensation nuclei

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Estimating the Characteristics of Runoff Inflow into Lake Gojal in Ungauged,Highly Glacierized Upper Hunza River Basin,Pakistan

引用

Journal of Earth Science 2013年第2期24卷 234-243页

作者：张世强许民许君利赵求东 Stefan Hagemann qilian shan station of glaciology and Ecologic environment Cold & Arid Regions Environmental & Engineering Research InstituteChinese Academy of Sciences State Key Laboratory of Cryospheric Science Cold & Arid Regions Environmental & Engineering Research InstituteChinese Academy of Sciences Max Planck Institute for Meteorology Bundesstraβe 53D-20146HamburgGermany

Motivated by the potential flood outburst of Lake Gojal in the ungauged highly glacierized （27%） upper Hunza River Basin （HRB） in Pakistan that was dammed by a massive landslide on 4 January 2010, we attempt to analyze the characteristics of water inflow to the lake employing remote sensing data, two hydrological models, and sparsely observed data. One of the models （Model I） is a monthly degree-day model, while another （Model II） is the variable infiltration capacity （VIC） model. The mixture of glacier runoff output from Model I and runoff over unglacierized areas calculated by Model II has a similar seasonal variation pattern as that estimated from data recorded at a downstream station. This suggests that glacier runoff is the main source （87%） of runoff inflow into the lake. A sensitivity analysis suggests that the water inflow to the lake is highly sensitive to an increase in air temperature. Runoff in May is predicted to sharply increase by 15% to more than two-fold if the air temperature increases by 1 to 7 ℃, but it is predicted to increase only from 9% to 34% if the precipitation increases by 10% to 40%. The results suggested that the water inflow into Lake Gojal will not sharply rise even if there is heavy rain, and it needs to be in caution if the air temperature sharply increases. Analysis on long-term air temperature record indicates that the water inflow into the lake in May 2010 was probably less than average owing to the relatively low air temperature. Consequently, the flood outburst did not occur before the completion of the spillway on 29 May 2010.

关键词： ungauged glacierized runoffmodeling sensitivity analysis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Spatial variation of stable isotopes in different waters during melt season in the Laohugou Glacial Catchment, Shule River basin

引用

Journal of Mountain Science 2016年第8期13卷 1453-1463页

作者： WU Jin-kui DING Yong-jian YANG Jun-hua LIU Shi-wei CHEN Ji-zu ZHOU Jia-xin QIN Xiang Laboratory of Watershed Hydrology and Ecology Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences qilian shan station of glaciology and Ecologic environment State Key Laboratory of Cryospheric Science Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Institute for Landscape Ecology and Resources Management Justus-Liebig-University Giessen

To evaluate isotopic tracers at natural abundances by providing basic isotope data of the hydrological investigations and assessing the impacts of different factors on the water cycle, a total of 197 water samples were collected from the Laohugou Glacial catchment in the Shule River basin northwestern China during the 2013 ablation seasons and analyzed their H- and O-isotope composition. The results showed that the isotopic composition of precipitation in the qilianshan station in the Laohugou Glacial catchment was remarkable variability. Correspondingly, a higher slope of δ^(18)O-δD diagram, with an average of 8.74, is obtained based on the precipitation samples collected on the Glacier No.12, mainly attributed to the lower temperature on the glacier surface. Because of percolation and elution, the isotopic composition at the bottom of the firn is nearly steady. The δ^(18)O /altitude gradients for precipitation and melt water were -0.37‰/100 m and -0.34‰/100 m, respectively. Exposed to the air and influenced by strong ablation and evaporation, the isotopic values and the δ^(18)O vs δD diagram of the glacial surface ice show no altitudinal effect, indicating that glacier ice has the similar origins with the firn. The variation of isotopic composition in the melt water, varying from -10.7‰ to -16.9‰(δ^(18)O) and from -61.1‰ to -122.1‰(δD) indicates the recharging of snowmelt and glacial ice melt water produced at different altitudes. With a mean value of -13.3‰ for δ^(18)O and -89.7‰ for δD, the isotopic composition of the stream water is much closer to the melt water, indicating that stream water is mainly recharged by the ablation water. Our results of the stable isotopic compositions in natural water in the Laohugou Glacial catchment indicate the fractionations and the smoothing fluctuations of the stable isotopes during evaporation, infiltration and mixture.

关键词：稳定同位素疏勒河流域冰川冰水体老虎同位素组成空间同位素示踪剂

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Changes of glacier area in the Xiying River Basin, East qilian Mountain, China

引用

Research in Cold and Arid Regions 2017年第5期9卷 432-437页

作者： YuShuo Liu Xiang Qin WenTao Du State Key Laboratory of Cryospheric Sciences Northwest Institute of Eco-Environment and Resources Chinese Academy of Sciences Lanzhou Gansu 730000 China qilian shan station of glaciology and Ecologic environment Northwest Institute of Eco-Environment and Resources Chinese Academy of Sciences Lanzhou Gansu 730000 China

The Xiying River,one of eight tributaries of the Shiyang River,located at Lenglongling,east qilian Mountain,is formed by the confluence of Luotuo,Qingyang,Ningchan,and Shuiguan *** the Xiying River Basin,where have 42 glaciers which toward NE in the *** this study,three Landsat images and two topographic maps were used to extract boundaries by artificial vector *** show that glacier area in Xiying Basin increased slightly around 1987,since then,has been reduced *** 1956/1972 to 2008,glacier area in Xiying River Basin was reduced by20.76%,nine glaciers have disappeared,and below 4,100 m a.s.l.,there is no ice *** tendency of glacier retreat was obviously controlled by *** increase especially after 1987 is the main reason of glacier shrinkage,where glaciers in the Xiying River Basin are more sensitive to climate change.

关键词： glacier shrink qilian Mountain Xiying River remote sense

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The mass-balance characteristics and sensitivities to climate variables of Laohugou Glacier No.12,western qilian Mountains,China

引用

Research in Cold and Arid Regions 2017年第6期9卷 631-641页

作者： JiZu Chen ShiChang Kang Xiang Qin WenTao Du WeiJun Sun YuShuo Liu qilian shan station of glaciology and ecological environment State Key Laboratory of Cryospheric SciencesNorthwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhouGansu 730000China University of CAS Beijing 100049China CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing 100085China College of Population Resources and EnvironmentShandong Normal UniversityJinanShandong 250014China

Due to global warming, glaciers on the Tibetan Plateau(TP) are experiencing widespread shrinkage; however, the mechanisms controlling glacier variations across the TP are still rather unclear, especially on the northeastern TP. In this study, a physically based, distributed surface-energy and mass-balance model was used to simulate glacier mass balance forced by meteorological data. The model was applied to Laohugou No. 12 Glacier, western qilian Mountains, China, during2010~2012. The simulated albedo and mass balance were validated and calibrated by in situ measurements. The simulated annual glacier-wide mass balances were-385 mm water equivalent(w.e.) in 2010/2011 and-232 mm w.e. in 2011/2012,respectively. The mean equilibrium-line altitude(ELA) was 5,015 m a.s.l., during 2010~2012, which ascended by 215 m compared to that in the 1970 s. The mean accumulation area ratio(AAR) was 39% during the two years. Climatic-sensitivity experiments indicated that the change of glacier mass balance resulting from a 1.5 °C increase in air temperature could be offset by a 30% increase in annual precipitation. The glacier mass balance varied linearly with precipitation, at a rate of130 mm w.e. per 10% change in total precipitation.

关键词： glacier mass balance energy- and mass-balance model climate sensitivities

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：