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K. Koike · SciRah

Researcher profile · Semantic Scholar

K. Koike

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K. Koike — researcher profile on SciRah

h-index: 32
Works: 271
Citations: 3,527

Most-cited papers

Selecting the Best Band Ratio to Estimate Chlorophyll-a Concentration in a Tropical Freshwater Lake Using Sentinel 2A Images from a Case Study of Lake Ba Be (Northern Vietnam)
Ha Thi Thu Nguyen, Thao Thien Phuong Nguyen, K. Koike, M. Nhuan
2017ISPRS Int. J. Geo Inf.146 citations Open access
Semantic Scholar
Mapping soil salinity using spectral mixture analysis of landsat 8 OLI images to identify factors influencing salinization in an arid region
A. Masoud, K. Koike, Mohamed G. Atwia, M. M. El-Horiny +1 more
2019International Journal of Applied Earth Observation and Geoinformation71 citations
Semantic Scholar
Application of lineament density extracted from dual orbit of synthetic aperture radar (SAR) images to detecting fluids paths in the Wayang Windu geothermal field (West Java, Indonesia)
A. Saepuloh, Haeruddin Haeruddin, M. Heriawan, T. Kubo +2 more
201860 citations Open access
Semantic Scholar
Assessment of groundwater and soil quality degradation using multivariate and geostatistical analyses, Dakhla Oasis, Egypt
A. Masoud, M. M. El-Horiny, Mohamed G. Atwia, Khaled S. Gemail +1 more
2018Journal of African Earth Sciences59 citations
Semantic Scholar
Landsat 8/OLI Two Bands Ratio Algorithm for Chlorophyll-A Concentration Mapping in Hypertrophic Waters: An Application to West Lake in Hanoi (Vietnam)
Ha Thi Thu Nguyen, K. Koike, M. Nhuan, Canh Dinh Bui +2 more
2017IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing59 citations
Semantic Scholar
Applicability of computer-aided comprehensive tool (LINDA: LINeament Detection and Analysis) and shaded digital elevation model for characterizing and interpreting morphotectonic features from lineaments
A. Masoud, K. Koike
2017Computational Geosciences56 citations Open access
Semantic Scholar
Ni grade distribution in laterite characterized from geostatistics, topography and the paleo-groundwater system in Sorowako, Indonesia
A. Ilyas, Koki Kashiwaya, K. Koike
201640 citations Open access
Semantic Scholar
Spatio-temporal trends and change factors of groundwater quality in an arid area with peat rich aquifers: Emergence of water environmental problems in Tanta District, Egypt
A. Masoud, K. Koike, Hamdy Mashaly, Fibi Gergis
201637 citations
Semantic Scholar
Specifying recharge zones and mechanisms of the transitional geothermal field through hydrogen and oxygen isotope analyses with consideration of water-rock interaction
R. M. Shoedarto, Yohei Tada, Koki Kashiwaya, K. Koike +1 more
202035 citations Open access
Semantic Scholar
Spatial variations of tritium concentrations in groundwater collected in the southern coastal region of Fukushima, Japan, after the nuclear accident
Koki Kashiwaya, Yuta Muto, T. Kubo, R. Ikawa +3 more
2017Scientific Reports33 citations Open access
Semantic Scholar
On the origin and evolution of geothermal fluids in the Patuha Geothermal Field, Indonesia based on geochemical and stable isotope data
Y. Rahayudin, Koki Kashiwaya, Yohei Tada, Irwan Iskandar +3 more
202032 citations Open access
Semantic Scholar
Identifying Groundwater Potential in Crystalline Basement Rocks Using Remote Sensing and Electromagnetic Sounding Techniques in Central Western Mozambique
L. Magaia, T. Goto, A. Masoud, K. Koike
2018Natural Resources Research29 citations
Semantic Scholar
Effective Band Ratio of Landsat 8 Images Based on VNIR-SWIR Reflectance Spectra of Topsoils for Soil Moisture Mapping in a Tropical Region
vThi Ngo Dinh, H. Nguyen, Quy Tran Dang, K. Koike +1 more
2019Remote Sensing28 citations Open access
Semantic Scholar
Electrical conductive fluid-rich zones and their influence on the earthquake initiation, growth, and arrest processes: observations from the 2016 Kumamoto earthquake sequence, Kyushu Island, Japan
K. Aizawa, S. Takakura, H. Asaue, K. Koike +20 more
2020Earth, Planets and Space27 citations Open access
Semantic Scholar
Controls on radon emission from granite as evidenced by compression testing to failure
K. Koike, T. Yoshinaga, Ken Suetsugu, Koki Kashiwaya +1 more
201527 citations Open access
Semantic Scholar
Seismicity controlled by resistivity structure: the 2016 Kumamoto earthquakes, Kyushu Island, Japan
K. Aizawa, H. Asaue, K. Koike, S. Takakura +28 more
2017Earth, Planets and Space26 citations Open access
Semantic Scholar
Investigation of meteoric water and parent fluid mixing in a two-phase geothermal reservoir system using strontium isotope analysis: A case study from Southern Bandung, West Java, Indonesia
R. M. Shoedarto, Yohei Tada, Koki Kashiwaya, K. Koike +3 more
2021Geothermics23 citations Open access
Semantic Scholar
Comparison of hyperspectral transformation accuracies of multispectral Landsat TM, ETM+, OLI and EO-1 ALI images for detecting minerals in a geothermal prospect area
H. Nguyen, K. Koike
201821 citations Open access
Semantic Scholar
Transformation of Landsat imagery into pseudo-hyperspectral imagery by a multiple regression-based model with application to metal deposit-related minerals mapping
H. Nguyen, K. Koike
201721 citations Open access
Semantic Scholar
Estimating fractured rock effective permeability using discrete fracture networks constrained by electrical resistivity data
Jin Wu, T. Goto, K. Koike
202120 citations Open access
Semantic Scholar
How can satellite imagery be used for mineral exploration in thick vegetation areas?
A. H. Hede, K. Koike, Koki Kashiwaya, Shigeki Sakurai +2 more
201719 citations
Semantic Scholar
Characterizing the permeability of drillhole core samples of Toki granite, Central Japan to identify factors influencing rock-matrix permeability
T. Kubo, N. Matsuda, Koki Kashiwaya, K. Koike +5 more
2019Engineering Geology18 citations
Semantic Scholar
Combined SBAS-InSAR and geostatistics to detect topographic change and fluid paths in geothermal areas
P. G. Sabrian, A. Saepuloh, Koki Kashiwaya, K. Koike
202117 citations Open access
Semantic Scholar
Detection of Near-Surface Permeable Zones Based on Spatial Correlation Between Radon Gas Concentration and DTM-Derived Lineament Density
M. Heriawan, Ahmad Syafi'i, A. Saepuloh, T. Kubo +1 more
2020Natural Resources Research17 citations
Semantic Scholar
Incorporation of geological constraints and semivariogram scaling law into geostatistical modeling of metal contents in hydrothermal deposits for improved accuracy
K. Koike, T. Kiriyama, Lei Lu, T. Kubo +2 more
2021Journal of Geochemical Exploration16 citations
Semantic Scholar
Advanced characterization of hydrothermal flows within recharge and discharge areas using rare earth elements, proved through a case study of two-phase reservoir geothermal field, in Southern Bandung, West Java, Indonesia
R. M. Shoedarto, Yohei Tada, Koki Kashiwaya, K. Koike +1 more
2022Geothermics13 citations Open access
Semantic Scholar
A Combination of Geostatistical Methods and Principal Components Analysis for Detection of Mineralized Zones in Seafloor Hydrothermal Systems
Vitor Ribeiro de Sá, K. Koike, T. Goto, T. Nozaki +2 more
2020Natural Resources Research13 citations
Semantic Scholar
3D geostatistical modeling of metal contents and lithofacies for mineralization mechanism determination of a seafloor hydrothermal deposit in the middle Okinawa Trough, Izena Hole
Vitor Ribeiro de Sá, K. Koike, T. Goto, T. Nozaki +2 more
202112 citations
Semantic Scholar
Spatial Simulation and Characterization of Three-Dimensional Fractures in Gejiu tin District, Southwest China, Using GEOFRAC
Chun-Xue Liu, T. Kubo, Lei Lu, K. Koike +1 more
2018Natural Resources Research10 citations
Semantic Scholar
Detection of Thermal Features Through Interpolation of Well-Log Data in Low-to-Medium Enthalpy Geothermal System, Gulf of Suez, Egypt
A. Masoud, T. Kubo, K. Koike
2023Natural Resources Research9 citations
Semantic Scholar
Integration of Landscape Metrics and Variograms to Characterize and Quantify the Spatial Heterogeneity Change of Vegetation Induced by the 2008 Wenchuan Earthquake
Ling Wang, B. Tian, K. Koike, Bu-Ting Hong +1 more
2017ISPRS Int. J. Geo Inf.9 citations Open access
Semantic Scholar
Geostatistics-based regional characterization of groundwater chemistry in a sedimentary rock area with faulted setting
Lei Lu, Koki Kashiwaya, K. Koike
2016Environmental Earth Sciences7 citations
Semantic Scholar
Geological Modeling and Numerical Simulation of Cold-Water Trap in the Low-Sulfidation Epithermal Sirawai Au–Ag Deposit, Mindanao, Philippines
Hiroshi A. Takahashi, S. Tomita, K. Koike, Hiroo Yoshiyama
2022Natural Resources Research6 citations
Semantic Scholar
Evaluating the effectiveness of a geostatistical approach with groundwater flow modeling for three-dimensional estimation of a contaminant plume.
Shizuka Takai, T. Shimada, Seiji Takeda, K. Koike
2022Journal of Contaminant Hydrology6 citations
Semantic Scholar
A cold-water trap as an essential process for the generation of low-sulfidation epithermal deposits: Geological and numerical studies of the Hosokura deposit, northern Japan
Hiroshi A. Takahashi, S. Tomita, K. Koike, Hiroo Yoshiyama
20206 citations Open access
Semantic Scholar
An Ancient >200 m Cumulative Normal Faulting Displacement Along the Futagawa Fault Dextrally Ruptured During the 2016 Kumamoto, Japan, Earthquake Identified by a Multiborehole Drilling Program
S. Shibutani, Wei-Ren Lin, K. Sado, Akihiro Aizawa +1 more
2022Geochemistry Geophysics Geosystems5 citations Open access
Semantic Scholar
Effectiveness of Neural Kriging for Three-Dimensional Modeling of Sparse and Strongly Biased Distribution of Geological Data with Application to Seafloor Hydrothermal Mineralization
K. Koike, Oak Yono, Vitor Ribeiro de Sá, S. Tomita +3 more
2022Mathematical Geosciences5 citations
Semantic Scholar
Spatial gradients of geomagnetic temporal variations causing the instability of inter-station transfer functions
Shinya Sato, T. Goto, K. Koike
2020Earth, Planets and Space5 citations Open access
Semantic Scholar
HYPERSPECTRAL TRANSFORMATION FROM EO-1 ALI IMAGERY USING PSEUDO-HYPERSPECTRAL IMAGE SYNTHESIS ALGORITHM
H. Nguyen, K. Koike
20165 citations Open access
Semantic Scholar
Quantifying Surface Roughness to Detect Geothermal Manifestations from Polarimetric Synthetic Aperture Radar ( PolSAR ) Data
A. Saepuloh, K. Koike, M. Heriawan, T. Kubo
20165 citations
Semantic Scholar
Development and Application of a Variable-Frequency-Based Electric Sounding System for Increasing the Accuracy of Aquifer Detection
H. Asaue, K. Koike, T. Yoshinaga, T. Goto +1 more
2021Natural Resources Research4 citations
Semantic Scholar
Lineament Extraction from Southern Chitradurga Schist Belt using Landsat TM, ASTERGDEM and Geomatics Techniques
A. Masoud, K. Koike, A. Abdulla, J. Akhir +1 more
20164 citations
Semantic Scholar
Development of Bayesian-based transformation method of Landsat imagery into pseudo-hyperspectral imagery
H. Nguyen, K. Koike
2015SPIE Remote Sensing4 citations
Semantic Scholar
Estimating Water Content and Grain Size of Intertidal Flat Sediments Using Visible to Shortwave-Infrared Reflectance and Sentinel 2A Data: A Case Study of the Red River Delta, Vietnam
Thuy Thi Phuong Vu, H. Nguyen, K. Koike, T. P. Nguyen +2 more
2022IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing3 citations Open access
Semantic Scholar
Construction of rock physics model based on electrical conductivity characteristics of rock samples obtained in seafloor hydrothermal areas
Y. Ohta, T. Goto, K. Koike, Koki Kashiwaya +5 more
20183 citations
Semantic Scholar
Joint Clarification of Contaminant Plume and Hydraulic Transmissivity via a Geostatistical Approach Using Hydraulic Head and Contaminant Concentration Data
Shizuka Takai, T. Shimada, Seiji Takeda, K. Koike
2023Mathematical Geosciences2 citations
Semantic Scholar
Multi-capacitance electric relaxation model for complex electrical conductivity of sulphide ores
Y. Ohta, T. Goto, Koki Kashiwaya, K. Koike
2023Exploration Geophysics2 citations
Semantic Scholar
Discriminating Weathering Degree by Integrating Optical Sensor and SAR Satellite Images for Potential Mapping of Groundwater Resources in Basement Aquifers of Semiarid Regions
L. Magaia, K. Koike, T. Goto, A. Masoud
2019Natural Resources Research2 citations
Semantic Scholar
Advanced Characterization of Hydrothermal Flows within Recharge and Discharge Areas Using Rare Earth Elements, Proved Through a Case Study of Wayang Windu Field, West Java, Indonesia
R. M. Shoedarto, Yohei Tada, Koki Kashiwaya, K. Koike +3 more
2022Social Science Research Network1 citations
Semantic Scholar
Utilization and Effectiveness of Numerical Simulation Based on a Cold-Water Trapping Mechanism for Epithermal Gold Exploration
Hiroshi Takahashi, S. Tomita, K. Koike, Hiroo Yoshiyama
2022Natural Resources Research1 citations
Semantic Scholar

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