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Articles 61 - 90 of 182
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Military Applications Of Geological Engineering, Stephen H. Tupper
Military Applications Of Geological Engineering, Stephen H. Tupper
Doctoral Dissertations
"This work examines the premise that military engineering and geological engineering are intellectually paired and overlapped in practice to a significant extent. Geological engineering is an established, albeit young, academic discipline that enjoys wide industry and civil demand and is supported by many professional organizations. In contrast, military engineering is an ancient, empirically derived training or "OJT" program with practice-based trade-associations that has narrow government-only utility. The premise is formed by decades-long observation of U. S. Army military engineer officers completing a Master of Science degree in geological engineering as a complement to their practice-based training in military engineering at …
Tsunamigenic Potential Of The Baiyun Slide Complex In The South China Sea, Linlin Li, Fengyan Shi, Gangfeng Ma, Qiang Qiu
Tsunamigenic Potential Of The Baiyun Slide Complex In The South China Sea, Linlin Li, Fengyan Shi, Gangfeng Ma, Qiang Qiu
Civil & Environmental Engineering Faculty Publications
The Baiyun slide complex contains geological evidence for some of the largest landslide ever discovered in the continental slopes of the South China Sea. High-resolution seismic data suggest that a variety of landslides with varied scales have occurred repeatedly in this area. The largest landslide reconstructed from bathymetric and seismic data has an estimated spatial coverage of ~5,500 km2 and a conservative volume of ~1,035 km3. Here, using geomorphological and geotechnical data, we construct a series of probable landslide scenarios and assess their tsunamigenic capacity. By treating the slides as deformable mudflows, we simulate the dynamics of …
Effects Of Using Clay Nanoparticles As A Soil Amendment To Remove Nitrate From Stormwater, Megan P. Abutin
Effects Of Using Clay Nanoparticles As A Soil Amendment To Remove Nitrate From Stormwater, Megan P. Abutin
Master's Theses
Development of urban areas continues to increase, disrupting the natural ecosystem and the pathways for water to drain into downstream water bodies. As the amount of impervious area increases, pollutants can accumulate on the surface and enter the water cycle by stormwater. In most cities, the stormwater flows into a storm drain that is discharged into a water body. Low Impact Development technology has been developed to treat stormwater prior to discharge downstream. A bioretention cell is used to treat stormwater pollutants such as nitrate, phosphorus, total suspended solids, and metals. Past research has indicated that the removal efficiency of …
Impacts Of Geotechnical Aspects In Tunneling Design And Construction, Mohammad Haadi Sadaghiani
Impacts Of Geotechnical Aspects In Tunneling Design And Construction, Mohammad Haadi Sadaghiani
Civil Engineering Theses - Archive
In tunneling project, different type of methods is conducted to do the project. Knowing geotechnical aspects of tunnel project is unavoidable and crucial in early stage of project especially before contract to have efficient and more accurate design and prevent cost overruns, reduce bid price and reduce project risks. However, all that geotechnical information should be based on standard guidelines such as Geotechnical Baseline Report (GBR) to help owner how to provide those geotechnical data in bid contract and use it as a guideline in contract to prevent future claim or disputes. The main objective of this thesis is about …
1974 - Geology Of The Southern Salinas Valley Area, California
1974 - Geology Of The Southern Salinas Valley Area, California
State and Federal Documents Relating to Monterey and San Luis Obispo Counties
This 1974 report about the geology of the southern Salinas Valley was concerned mainly with relating the occurrence of petroleum and other mineral commodities to the Cenozoic history of the area. The investigation had two phases. First phase involved detailed geologic mapping of quadrangles that cover most of Tertiary beds west of the Salinas River. Second phase included a reconnaissance geologic mapping to extend the results of the first phase to a larger area. The report summarizes results of the geologic investigation of the entire southern Salinas Valley area.
Fluid Inclusion And Stable Isotope Investigation Of Hydrothermal Talc And Chlorite Deposits In Southwest Montana, Garrett Hill
Fluid Inclusion And Stable Isotope Investigation Of Hydrothermal Talc And Chlorite Deposits In Southwest Montana, Garrett Hill
Graduate Theses & Non-Theses
Talc and chlorite deposits of southwest Montana formed as hydrothermal replacements of Archean and/or early Proterozoic dolomitic marble and quartzo-feldspathic gneiss. Although the hydrothermal replacement model is generally accepted, less is known about the temperature, composition, and origin of the fluids involved in talc and chlorite formation. The present study examines fluid inclusions in quartz associated with both talc and chlorite, stable hydrogen and oxygen isotopes of talc, chlorite, and quartz, and stable carbon and oxygen isotopes of carbonate minerals. The deposits being examined include the Yellowstone, Beaverhead and Willow Creek talc mines, and the Antler chlorite mine.
Fluid inclusion …
Integrated Stratigraphic Controls For Flow Simulation Of The Wall Creek Member Of Frontier Formation: Western Powder River Basin, Wyoming, Tuan Le
Graduate Theses & Non-Theses
The Frontier Formation in the Powder River Basin has been re-discovered for oil and gas potential with the development of long horizontal wells and multi-stage hydraulic fracturing. Over the last decade, the Upper Cretaceous Wall Creek Member (WCM) of the Frontier Formation has proven to be a successful hydrocarbon-producing target, yet a full understanding of the flow behavior in this complex stratigraphic unit has not been fully achieved.
The fluid and rock properties have uncertainty and are not well defined due to the low permeability rocks. This study aims to describe the fluid flow behaviors of these features and create …
1974 - Geology Of The Southern Salinas Valley Area, California
1974 - Geology Of The Southern Salinas Valley Area, California
Miscellaneous Federal Documents & Reports
This 1974 report about the geology of the southern Salinas Valley was concerned mainly with relating the occurrence of petroleum and other mineral commodities to the Cenozoic history of the area. The investigation had two phases. First phase involved detailed geologic mapping of quadrangles that cover most of Tertiary beds west of the Salinas River. Second phase included a reconnaissance geologic mapping to extend the results of the first phase to a larger area. The report summarizes results of the geologic investigation of the entire southern Salinas Valley area.
Utilization And Environmental Durability Of Advanced Composite Design Of Seismic Foundation For All-Soil Site Classes, Qian Huang
All ETDs from UAB
Three bridge sites in Alabama are investigated for potential seismic-foundation retrofit. A new seismic foundation method that uses Fiber Reinforcement Polymer (FRP) to strengthen the head of pile (FSHP) is proposed. Two FRP specifically, Carbon-Fiber Reinforced Hybrid-Polymer-Matrix Composite (CHMC) and Carbon Fiber Reinforced Polymer (CFRP), are used in this new seismic retrofit method. Finite Element Seismic simulation (FEM) is used to examine the seismic retrofit performance of bridge foundation. Both CHMC and CFRP FSHP retrofitted piles are shown to survive the design-earthquake, but it is shown that CHMC, which is a wrap / epoxy / spray-on material, provides markedly better …
Hydraulic Fracture Design Optimization For Nubian Sandstone Formation In Libya, Housameddin Mohamed Sherif
Hydraulic Fracture Design Optimization For Nubian Sandstone Formation In Libya, Housameddin Mohamed Sherif
Masters Theses
There is growing interest in developing unconventional oil and gas reserves in Libya, such as the tight portions of the Nubian sandstone.
Well-X7 is a development well drilled to a TD of 13,005' penetrating the Upper Nubain Sandstone (UNSS) at 12,122'-12,207' and the Lower Nubain Sandstone (LNSS) at 12,524'-12,880' KB. Based on open hole logs, the UNSS has 71 ft of net pay and the LNSS was found to have 295 ft of net pay. Openhole logs also showed low permeabilities of 2.5 and 3 md for the UNSS and LNSS, respectively. The well was initially perforated in both zones …
Integrated Assessment Of Shallow-Aquifer Vulnerability To Multiple Contaminants And Drinking-Water Exposure Pathways In Holliston, Massachusetts, Birgit Claus Henn, Yelena Ogneva-Himmelberger, Allegra Denehy, Marcie Randall, Nichole Cordon, Bilin Basu, Brian Caccavale, Stefanie Covino, Ravi Hanumantha, Kevin Longo, Ariel Maiorano, Spring Pillsbury, Gabrielle Rigutto, Kelsey Shields, Marianne Sarkis, Timothy Downs
Integrated Assessment Of Shallow-Aquifer Vulnerability To Multiple Contaminants And Drinking-Water Exposure Pathways In Holliston, Massachusetts, Birgit Claus Henn, Yelena Ogneva-Himmelberger, Allegra Denehy, Marcie Randall, Nichole Cordon, Bilin Basu, Brian Caccavale, Stefanie Covino, Ravi Hanumantha, Kevin Longo, Ariel Maiorano, Spring Pillsbury, Gabrielle Rigutto, Kelsey Shields, Marianne Sarkis, Timothy Downs
Sustainability and Social Justice
Half of U.S. drinking water comes from aquifers, and very shallow ones (table) are especially vulnerable to anthropogenic contamination. We present the case of Holliston, a Boston, Massachusetts suburb that draws its drinking water from very shallow aquifers, and where metals and solvents have been reported in groundwater. Community concerns focus on water discolored by naturally occurring manganese (Mn), despite reports stating regulatory aesthetic compliance. Epidemiologic studies suggest Mn is a potentially toxic element (PTE) for children exposed by the drinking-water pathway at levels near the regulatory aesthetic level. We designed an integrated, community-based project: five sites were profiled for …
Crustal Thickness Beneath Libya And The Origin Of Partial Melt Beneath As Sawda Volcanic Province From Receiver Function Constraints, Awad A. Lemnifi, Abdelsalam Elshaafi, John Browning, Nassib Aouad, Saad K. El Ebaidi, Kelly K. Liu, Agust Gudmundsson
Crustal Thickness Beneath Libya And The Origin Of Partial Melt Beneath As Sawda Volcanic Province From Receiver Function Constraints, Awad A. Lemnifi, Abdelsalam Elshaafi, John Browning, Nassib Aouad, Saad K. El Ebaidi, Kelly K. Liu, Agust Gudmundsson
Mining Engineering Faculty Research & Creative Works
This study investigates crustal thickness and properties within the Libyan region. Results obtained from 15 seismic stations belonging to the Libyan Center for Remote Sensing and Space Science are reported, in addition to 3 seismic stations publically available, using receiver functions. The results show crustal thicknesses ranging from 24 km to 36 km (with uncertainties ranging between ±0.10 km and ±0.90 km). More specifically, crustal thickness ranges from 32 km to 36 km in the southern portion of the Libyan territory then becomes thinner, between 24 km and 30 km, in the coastal areas of Libya and thinnest, between 24 …
Geology Of The Middle Member Of The Bakken Formation In Divide County, North Dakota, Mandy Brewer
Geology Of The Middle Member Of The Bakken Formation In Divide County, North Dakota, Mandy Brewer
Graduate Theses & Non-Theses
The Upper Devonian-Lower Mississippian Bakken Formation of Williston Basin is a large unconventional oil and gas play consisting of a lower shale member, a middle member, and an upper shale member. The middle member is a production target because it contains porosity and petroleum expelled from the shale members around it. Variable production and sweet spots of the Bakken in the study area of Divide County, ND and 15 miles around Divide County in the USA prompted a closer look at middle member Bakken sediments. For this study, 606 wells were correlated and thin sections from two wells located 10.17 …
A Geologic Study To Determine The Potential To Create An Appalachian Storage Hub For Natural Gas Liquids, Kristin M. Carter, Douglas G. Patchen, Jessica P. Moore, Mohammad Fakhari, Gary W. Daft Jr, Michael Solis, Brian J. Dunst, Robin V. Anthony, Katherine W. Schmid, Kyle Metz, Philip Dinterman, Julie M. Bloxson, Erica N. Schubert, John Saucer
A Geologic Study To Determine The Potential To Create An Appalachian Storage Hub For Natural Gas Liquids, Kristin M. Carter, Douglas G. Patchen, Jessica P. Moore, Mohammad Fakhari, Gary W. Daft Jr, Michael Solis, Brian J. Dunst, Robin V. Anthony, Katherine W. Schmid, Kyle Metz, Philip Dinterman, Julie M. Bloxson, Erica N. Schubert, John Saucer
Appalachian Oil and Natural Gas Research Consortium
The Marcellus and Utica shale plays continue to lead the way in an ever-expanding shale revolution with average daily production, growing from about 3 billion cubic feet (BCF) in 2010 to more than 24 BCF today. Forecasts suggest that this could grow to as much as 40 BCF in the next 5 years. Fortunately, sweet spots in the Utica in eastern Ohio and in the Marcellus in northern West Virginia and southwestern Pennsylvania are areas of wet gas production, downdip from oil production and updip from dry gas. Production in these regions represents about 40 percent of the total from …
Evaluation Of Electrocoagulation For Chloride And Ammonium Removal From The Reject Brine Effluent Pretreated By Solvay Process, Miada Abubaker Ali
Evaluation Of Electrocoagulation For Chloride And Ammonium Removal From The Reject Brine Effluent Pretreated By Solvay Process, Miada Abubaker Ali
Theses
Excessive use of desalination, due to the increase in freshwater demand, results in large productions of reject brine. Therefore, the development of an efficient treatment process of the reject brine becomes vital. The Solvay process is one of the main treatment technologies, wherein NH3 is introduced to convert soluble Na+ into insoluble NaHCO3. However, in this process, Cl- is not removed and NH4+ is introduced, and therefore electrocoagulation has been proposed for their removal. The experiment was designed using Minitab with different initial concentrations of chloride (7400 – 32600 mg/l), current densities (0.033 …
The Prescribed Burning Impacts On Soil Water Repellency And Soil Hydrological Properties In Sagebrush-Steppe Ecosystem, Yang Cheng
Dissertations - ALL
Prescribed fire is an important tool for rangeland management in sage-steppe ecosystem, yet the long-term effects of this practice have not been well studied. Previous studies of fire-affected soil water repellency have identified the strength and persistence of SWR after burning in different types of forests but have not identified consistent timelines for post-fire recovery. This study explores the impacts of fire and plant community succession on SWR and infiltration properties to further inform rangeland managers regarding the long-term impacts of prescribed fire on SWR and infiltration properties in sagebrush-steppe ecosystems.
The objectives of this study were: 1) To explore …
Collecting, Preparing, And Synthesizing Well Log Data For Subsurface Mapping: Example From The Bakken Formation, Asel Sherimkulova
Collecting, Preparing, And Synthesizing Well Log Data For Subsurface Mapping: Example From The Bakken Formation, Asel Sherimkulova
Graduate Theses & Non-Theses
Late Devonian and Early Mississippian Bakken Formation consists of three distinct members: the upper shale, middle, and lower shale. The upper and lower shales are excellent source rocks, rich in organic content. The organic material in the shales was derived from planktonic algae. Both the upper and lower shales were deposited during a transgressive event in hypoxic to anoxic conditions. The original total organic carbon content in the Bakken shales ranges from 20 to 22 weight percent, however; the content decreases to 10 to 17 weight percent as a result of maturation of hydrocarbons and primary expelling of oil. High …
Guidance Index For Shallow Landslide Hazard Analysis, Cheila Cullen
Guidance Index For Shallow Landslide Hazard Analysis, Cheila Cullen
Dissertations, Theses, and Capstone Projects
Rainfall-induced landslides are one of the most frequent hazards on slanted terrains. They lead to considerable economic losses and fatalities worldwide. Intense storms with high-intensity and long-duration rainfall have high potential to trigger rapidly moving soil masses due to changes in pore water pressure and seepage forces. Nevertheless, regardless of the intensity-duration of the rainfall, shallow landslides are influenced by antecedent soil moisture conditions. To the present day, no system exists that dynamically interrelates these two factors.
This work establishes a relationship between antecedent soil moisture and rainfall expressed in the form of a Shallow Landslide Index (SLI) at 1km …
Perchlorate Bioremediation: Controlling Media Loss In Ex-Situ Fluidized Bed Reactors And In-Situ Biological Reduction By Slow-Release Electron Donor, Sichu Shrestha
UNLV Theses, Dissertations, Professional Papers, and Capstones
The main concern of perchlorate exposure through drinking water is its effects on the production of thyroid hormone, which is important for human metabolism and child’s brain development. The US Environmental Protection Agency (EPA) has listed perchlorate in the contaminant list as well as in the Unregulated Contaminant Monitoring rule.
The extent of perchlorate contamination can be categorized by the level of contamination into parts per million (ppm) levels, typically in locations where perchlorate was manufactured, and parts per billion (ppb) levels where perchlorate was used for various purposes. Ion-exchange is generally adopted for treating ppb levels of perchlorate while …
A Distributed Map Animation Framework For Spatiotemporal Datasets, Ahmet Sayar
A Distributed Map Animation Framework For Spatiotemporal Datasets, Ahmet Sayar
Turkish Journal of Electrical Engineering and Computer Sciences
Maps are an excellent way to present data that have spatial components. However, when the data being presented vary over time, a simple two-dimensional map ignores an important feature of the data. An animated map that shows a series of two-dimensional maps at successive points in time allows one to add a time dimension to the display of data. The current study proposes a distributed service-oriented architecture to create map animations from spatiotemporal datasets. We extend the open standards GIS web services definitions with a topic-based publish-subscribe paradigm, which best suits the animation requirements. The effectiveness of the technique is …
Fluid Flow Through Deformation Band, Huining Zhang
Fluid Flow Through Deformation Band, Huining Zhang
Masters Theses
"Cataclastic deformation bands, which are common in porous sandstone, have the potential to restrict fluid flow. Geological studies have shown that permeability of deformation band shear zones can be one to five orders of magnitude less than for the sandstone host rock. However, recent studies based on simplified analytical estimates have shown that fluid flow in jointed deformation bands may not be retarded since joints play an important role in conducting fluids. In this study, 2 dimensional finite element analysis (FEA) is used to simulate the total discharge flow rate through jointed deformations. Variations of single planar and conjugate jointed …
Discrimination Of Various Rock Units In Abu Zenima Area, South Western Sinai, Egypt, With Emphases To The Radioactive Areas Using The Hyperspectral Remote Sensing And Gis Techniques, Reda El Arafy
All ETDs from UAB
This research study investigates the potential value of spectral information extraction of Hyperion hyperspectral, The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) and, Landsat 8 OLI remote sensing data for geological mapping and mineral exploration in a semi-arid region in the Southwestern Sinai, Egypt. Previous investigations of known uranium deposits reflect its economic importance and justifies exploration for additional prospects. The study area is subject to low average precipitation associated with sparse to nonexistent vegetation cover, making it quite an ideal location for this remote sensing study. This study tested a diversity of advanced hyperspectral analytical image processing techniques …
Hayward Shoreline Levee Protection, Samuel Beering, Karissa Canonizado, Caleb Young
Hayward Shoreline Levee Protection, Samuel Beering, Karissa Canonizado, Caleb Young
Civil, Environmental and Sustainable Engineering Senior Theses
The area from north of the San Mateo Bridge to Hayward Landing in the city of Hayward is at risk of flooding due to thirty-six inch sea level rise in the next 50-100 years. The areas that the this flooding would have a negative environmental impact as well as impact businesses and other residents near the project area. To protect these areas new shoreline protection was proposed. To begin designing new shore protection, the existing levee was analyzed on GeoSlope after doing numerous soil testing. It was found that the existing levee would fail against overtopping. After evaluating three alternatives, …
Incorporating Environmental And Social Factors Into Decision-Making Of An Oil And Gas Industry To Improve Sustainability, Gaurav Dabhadkar
Incorporating Environmental And Social Factors Into Decision-Making Of An Oil And Gas Industry To Improve Sustainability, Gaurav Dabhadkar
Graduate Theses and Dissertations
The energy industry (including the oil and gas industry) is facing unparalleled scrutiny and demands from stakeholders including investors, regulators (industry and environmental), communities, and other stakeholders. Sustainable development is one of the major concerns of the oil and gas industry. Companies are seeking to increase sustainability of their operations by considering environmental and Social concerns in addition to economic concerns. Oil and gas companies need to take decisions at different stages of the product life cycle (e.g. planning, design, exploration, production, and clean-up) which have direct or indirect impact on the organization's objectives. Addressing economic, technical, Social, and environmental …
Evaluating Methods Of Field-Based 3d Visualization And Their Application To Mapping Metamorphic Terranes: An Example From The Panamint Mountains, California, Jade Ashley Brush
Evaluating Methods Of Field-Based 3d Visualization And Their Application To Mapping Metamorphic Terranes: An Example From The Panamint Mountains, California, Jade Ashley Brush
Open Access Theses & Dissertations
Field geology has traditionally relied on 2D, paper-based workflows, but digital mapping techniques are rapidly replacing these outdated methods because they allow for more efficient and accurate mapping. This research applies digital mapping techniques and two terrestrially-based 3D visualization technologies, photogrammetry and Light Detection and Ranging (LiDAR), to the study of metamorphic terranes in the Panamint Mountains, California. This study reports on the spatial accuracy of TINs (triangulated irregular networks) generated from both photogrammetry and ground-based LiDAR using a terrestrial laser scanner (TLS) and discusses how spatial accuracy can be increased. Two levels of comparison were used to test spatial …
Post-Treatment Assessment Of Hydraulic Fracturing With Integrated Modeling Of Natural Fracture Distribution, Ping Puyang
Post-Treatment Assessment Of Hydraulic Fracturing With Integrated Modeling Of Natural Fracture Distribution, Ping Puyang
LSU Master's Theses
Hydraulic fracturing has been serving as the principal reservoir stimulation technique for decades to improve production capacities of low permeability formations. On the other hand, through core and outcrop studies, advanced logging tools, microseismic fracture mapping and well testing analysis, it has been further revealed that many of the shale gas formations are naturally fractured. The presence of natural fractures and their interactions with hydraulic fractures must be taken into consideration while designing fracturing treatment. Although most natural fractures are cemented by precipitations during diagenesis, they may be reactivated during hydraulic fracturing and serve as weak paths for fluid flow …
Imaging Beneath Standing Bodies Of Water In Karst Terrain, Abdulrahman Masfer Alotaibi
Imaging Beneath Standing Bodies Of Water In Karst Terrain, Abdulrahman Masfer Alotaibi
Doctoral Dissertations
"Side scan sonar and down scan sonar, sub bottom profiling, electrical resistivity tomography profiling (underwater cables), and continuous resistivity profiling (towed cable) surveys were conducted to characterize the lake sediments (rock and soil) beneath the man-made Little Prairie Lake, in central Missouri. Sub bottom profiling and electrical resistivity (with marine cables and towed cable) were used to determine variability in the lithology and thickness of sediments (soil and rock) beneath the lake, while side scan sonar was used to map the variations in the lithology/nature of exposed lakebed sediments and to locate the potential hazard of trees. Down scan sonar …
A New Spatio-Temporal Data Mining Method And Its Application To Reservoir System Operation, Abhinaya Mohan
A New Spatio-Temporal Data Mining Method And Its Application To Reservoir System Operation, Abhinaya Mohan
School of Computing: Dissertations, Theses, and Student Research
This thesis develops a spatio-temporal data mining method for uncertain water reservoir data. The goal of the data mining method is to learn from a history human reservoir operations in order to derive an automated controller for a reservoir system. Spatio-temporal data mining is a challenging task due to the reasons: (1) spatio-temporal datasets are usually much larger than spatial data sets, (2) many common spatial techniques are unable to deal with objects that change location, size or shape, and (3) complex and often non-linear spatio-temporal relationships cannot be separated into pure spatial and pure temporal relationships.
Support Vector Machines …
Updated Screening Criteria For Steam Flooding Based On Oil Field Projects Data, Mariwan Qadir Hama
Updated Screening Criteria For Steam Flooding Based On Oil Field Projects Data, Mariwan Qadir Hama
Masters Theses
"Enhanced oil recovery (EOR) screening is considered the first step in evaluating potential EOR techniques for candidate reservoirs. Therefore, as new technologies are developed, it is important to update the screening criteria. Many of the screening criteria for steam flooding that have been described in the literature were based on data collected from EOR surveys biennially published in the Oil & Gas Journal. However, these datasets contain some problems, including outliers, missing data, inconsistent data and duplicate data, that could affect the accuracy of the results. Despite the importance of ensuring the quality of a dataset before running analyses, data …
The Description Of An Effective Sinkhole Investigation Approach: A Case Study Of Two Sites In Greene County, Missouri, Stanley Chinedu Nwokebuihe
The Description Of An Effective Sinkhole Investigation Approach: A Case Study Of Two Sites In Greene County, Missouri, Stanley Chinedu Nwokebuihe
Masters Theses
"Karst topographies pose danger to the environment. The associated gradual subsidence or sudden collapse of the ground can lead to loss of lives and damage to property. A sinkhole is the subsidence or collapse of the overburden into subsurface cavities. Sinkholes develop in different sizes, shapes and rates all over the world especially in areas where the bedrock can be dissolved by percolating slightly acidic surface water.
Different methods have been used to investigate sinkholes. Boring is the most common of these methods. But the boring technique is quite inefficient; it only provides information of the subsurface conditions at the …