检索结果-南通市图书馆

Meteorite impact craters as hotspots for mineral resources and energy fuels:A global review

Energy Geoscience 2022年第2期3卷 136-146页

作者： s.James saranya R.Chandran M.santosh A.P.Pradeepkumar M.N.Praveen k.s sajinkumar s sajinkumar 1 2department of geologyuniversity of keralathiruvananthapuram695581keralaindia school of earth science and resources china university of geosciencesbeijing100083china department of earth sciences university of adelaidesa5005australia geological survey of india bengaluru560111india department of geological and mining engineering and sciences michigan technological universityhoughton49931miusa

The ever-increasing recovery rate of natural resources from terrestrial impact craters over the last fewdecades across the globe offers new avenues for further exploration of mineral and hydrocarbon resources in such *** of today,60 of the 208 terrestrial craters have been identified to host diverseresources such as hydrocarbons,metals and construction *** potential of craters as plausibleresource contributors to the energy sector is therefore,worthy of consideration,as 42(70%)of the 60craters host energy resources such as oil,gas,coal,uranium,mercury,critical and major minerals as wellas hydropower *** others,19 craters are of well-developed hydrocarbon *** associated with craters are also classified similar to other mineral resources such as progenetic,syngenetic and epigenetic *** these,the progenetic and syngenetic mineralization are confinedto the early and late excavation stage of impact crater evolution,respectively,whereas epigenetic deposits are formed during and after the modification stage of crater ***,progenetic andsyngenetic mineral deposits(like Fe,Ni,Pb,Zn and Cu)associated with craters are formed as a directresult of the impact event,whereas epigenetic deposits(***)are hosted by the impactstructure and result from post-impact *** the progenetic and syngenetic deposits,the shockwave induced fracturing and melting aid the formation of deposits,whereas in the epigenetic deposits,the highly fractured lithostratigraphic units of higher porosity and permeability,like the centralelevated area(CEA)or the rim,act as *** this review,we provide a holistic view of the mineral andenergy resources associated with impact craters,and use some of the remote sensing techniques toidentify the mineral deposits as supplemented by a schematic model of the types of deposits formedduring cratering process.

关键词： Meteorite impact crater Progenetic deposit syngenetic deposit Epigenetic deposit Mineralization Hydrocarbon Petroleum Exploration

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Remote sensing for energy resources:Introduction

引用

Energy Geoscience 2022年第2期3卷 134-135页

作者： k.s.sajinkumar Thomas Oommen Department of Geology University of KeralaThiruvananthapuram695581KeralaIndia Department of Geological and Mining Engineering and sciences Michigan Technological UniversityHoughtonMI49931USA

Energy resources are critical for human *** energy that we use is obtained from the Earth,its atmosphere,or the *** of these energy resources we obtain from the subsurface through the mining or extraction process,like gas,coal,oil,geothermal,and ***,we also harness from the surface like wind,solar,and *** and geological engineers play a critical role in developing energy resources,maintaining its operation,and evaluating their environmental *** recent years,the advancement in satellite and aerial remote sensing is a tool that is widely used by geoscientists and engineers to address various aspects of energy *** application of remote sensing to energy resources,starting from reconnaissance to detailed studies,utilizing multispectral to hyperspectral and radar to LiDAR techniques,have gained significant *** remote sensing applications include identifying potential source of fuels used in the energy.

关键词： Remote utilizing gained

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

InsAR as a tool for monitoring hydropower projects:A review

引用

Energy Geoscience 2022年第2期3卷 160-171页

作者： J.Aswathi R.B.Binoj kumar T.Oommen E.H.Bouali k.s.sajinkumar Department of Geology University of KeralaThiruvananthapuram695581KeralaIndia Department of Geological and Mining Engineering and sciences Michigan Technological UniversityHoughtonMIUSA Department of Physical and Life sciences Nevada State CollegeHendersonNV89002USA

This paper provides a review of using Interferometric synthetic Aperture Radar(InsAR),a microwave remote sensing technique,for deformation monitoring of hydroelectric power projects,a critical infrastructure that requires consistent and reliable *** all major dams around the world were built for the generation of *** can enhance dam safety by providing timely settlement measurements at high *** paper provides a holistic view of different InsAR deformation monitoring techniques such as Differential synthetic Aperture Radar Interferometry(DInsAR),Ground-Based synthetic Aperture Radar(GBInsAR),Persistent scatterer Interferometric synthetic Aperture Radar(PsInsAR),Multi-Temporal Interferometric synthetic Aperture Radar(MTInsAR),QuasiPersistent scatterer Interferometric synthetic Aperture Radar(QPsInsAR)and small BAseline subset(sBAs).PsInsAR,GBInsAR,MTInsAR,and DInsAR techniques were quite commonly used for deformation *** studies demonstrate the advantage of InsAR-based techniques over other conventional methods,which are laborious,costly,and sometimes *** technology is also favoured for its capability to provide monitoring data at all times of day or night,in all-weather conditions,and particularly for wide areas with mm-scale ***,the method also has some disadvantages,such as the maximum deformation rate that can be monitored,and the location for monitoring cannot be *** this review,we aim to popularize InsAR technology to monitor the deformation of dams,which can also be used as an early warning method to prevent any unprecedented *** study also discusses some case studies from southern India to demonstrate the capabilities of InsAR to indirectly monitor dam health.

关键词： InsAR RADAR Microwave Deformation Dam

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A composite fall-slippage model for cliff recession in the sedimentary coastal cliffs

引用

Geoscience Frontiers 2017年第4期8卷 903-914页

作者： k.s.sajinkumar J.P.kannan G.k.Indu C.Muraleedharan V.R.Rani Department of Geology University of Kerala Department of Geological & Mining Engineering & sciences Michigan Technological University Geological survey of India Central Ground Water Board

A composite fall-slippage model is proposed in this study for the Tertiary sedimentary coastal cliffs of Varkala in the western coastal tract of Peninsular India which are retreating landwards due to the combination of several *** fall model in the present study accounts both spring seepage and wave action,resulting in undercutting and this fall affects only the topmost laterite and the just below sandstone in the *** in this area affects all the litho-units and hence the geologic characteristics of all the litho-units are considered for developing the slippage *** mathematically derived model can be used in other cliffs exhibiting the same morphology as well as the one controlled by the same influencing *** model differs from other models in incorporating multi-lithounits as well as *** cliffs form a part of the aspiring geopark in the Global Geopark Network and hence a study on the cliff recession is a pressing requirement.

关键词： Coastal cliff Coastal landslide Cliff recession model Varkala

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 GIs tool for infinite slope stability analysis(GIs-TIssA)

引用

Geoscience Frontiers 2021年第2期12卷 756-768页

作者： Rüdiger Escobar-Wolf Jonathon D.sanders C.L.Vishnu Thomas Oommen k.s.sajinkumar Department of Geological and Mining Engineering and sciences Michigan Technological UniversityHoughtonMIUSA Department of Geology University of KeralaThiruvananthapuram 695581KeralaIndia

Landslides are one of the most common and a destructive natural hazard in mountainous terrain and thus evaluating their potential locations and the conditions under which they may occur is crucial for their hazard *** landslide occurrence in soil and regolith covered slopes are often modeled using the infinite slope model,which characterizes the slope stability in terms of a factor of safety(Fs) *** approaches have been followed to also assess and propagate uncertainty through such ***(2004) introduced the use of the First Order second Moment(FOsM) method to propagate input uncertainty through the infinite slope model,further developing the model and implementing it in the PIsA-m software package(Haneberg,2007).Here we present an ArcPy implementation of PIsA-m algorithms,which can be run from EsRI ArcMap in an entirely consistent georeferenced framework,and which we call "GIs Tool for Infinite slope stability Analysis"(GIs-TIssA).Users can select between different input options,e.g.,following a similar input style as for PIsA-m,i.e., using an *** parameters input file,or providing each input parameter as a raster or constant value,through the program graphic user *** outputs can include Fs mean and standard deviation estimates,the probability of failure(Fs same seismic analysis approach as in PIsA-m, the Newmark acceleration can also be done,for which raster files of the mean,standard deviation,probability of exceedance,and RI are also *** of the code is done by replicating the results obtained with the PIsA-m code for different input options,within a 10-5 relative *** Carlo modeling is also applied to validate GIs-TIssA outputs,showing a good overall correspondence.A case study was performed for kannur district,kerala,India,where an extensive landslide databa se for the year 2018 was available.81.19% of the actual

关键词： Landslides GIs-TIssA PIsA-m FOsM Factor of safety

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

Early warning system for shallow landslides using rainfall threshold and slope stability analysis

引用

Geoscience Frontiers 2018年第6期9卷 1871-1882页

作者： shruti Naidu k.s.sajinkumar Thomas Oommen V.J.Anuja Rinu A.samuel C.Muraleedharan Department of Earth sciences Pondicherry UniversityPondicherry 605 014India Department of Geology University of KeralaThiruvananthapuram 695 581KeralaIndia Department of Geological&Mining Engineering&sciences Michigan Technological University1400 Townsend DriveHoughtonMI 49931USA Department of Civil Engineering University of TexasArlingtonTX 76019USA Geological survey of India Thiruvananthapuram 695 013KeralaIndia

A combined cluster and regression analysis were performed for the first time to identify rainfall threshold that triggers landslide events in Amboori, kerala, India. Amboori is a tropical area that is highly vulnerable to landslides. The 2, 3, and 5-day antecedent rainfall data versus daily rainfall was clustered to identify a cluster of critical events that could potentially trigger landslides. Further, the cluster of critical events was utilized for regression analysis to develop the threshold equations. The 5-day antecedent(xvariable) vs. daily rainfall(y-variable) provided the best fit to the data with a threshold equation of y = 80.7-0.1981 x. The intercept of the equation indicates that if the 5-day antecedent rainfall is zero, the minimum daily rainfall needed to trigger the landslide in the Amboori region would be 80.7 mm. The negative coefficient of the antecedent rainfall indicates that when the cumulative antecedent rainfall increases, the amount of daily rainfall required to trigger monsoon landslide decreases. The coefficient value indicates that the contribution of the 5-day antecedent rainfall is～20% to the landslide trigger threshold. The slope stability analysis carried out for the area, using Probabilistic Infinite slope Analysis Model(PIsA-m), was utilized to identify the areas vulnerable to landslide in the region. The locations in the area where past landslides have occurred demonstrate lower Factors of safety(Fs) in the slope stability analysis. Thus, rainfall threshold analysis together with the Fs values from slope stability can be suitable for developing a simple, cost-effective, and comprehensive early-warning system for shallow landslides in Amboori and similar regions.

关键词： Landslide Cluster analysis Rainfall threshold analysis Factor of safety slope stability analysis PIsA-m

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

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

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：