Article
Geosciences, Multidisciplinary
Mohamad Nur Heriawan, Ahmad Ali Syafi'i, Asep Saepuloh, Taiki Kubo, Katsuaki Koike
Summary: This study developed a methodology for the regional detection of permeable zones in geothermal fields using multivariate geostatistical modeling of Radon-222 concentrations. By combining Radon concentrations with lineament density mapping and a fuzzy logic approach, the study successfully detected permeable zones that were confirmed by new drill hole data.
NATURAL RESOURCES RESEARCH
(2021)
Article
Environmental Sciences
Jinghao Lei, Zhikun Ren, Takashi Oguchi, Peizhen Zhang, Shoichiro Uchiyama
Summary: This study proposes a method for landslide volume estimation using differential digital elevation models (DEMs) and tests it in the Chuetsu region. The research reveals that the Chuetsu earthquake mainly roughens the topography in low-elevation areas, and long-term crustal rebound also modifies the topography.
Article
Remote Sensing
Ezra Francis Leslie Trotter, Ana Cristina Mosebo Fernandes, Casper Samso Fibaek, Carsten Kessler
Summary: Stone walls in Denmark play a vital role in supporting local biodiversity and are culturally and historically significant. The current registry of stone walls is outdated and incomplete. Using machine learning and convolutional neural networks, a study analyzed terrain data to assess and update the stone walls registry. The method showed good results and generalizability, especially in open areas, and is relevant for local governments in automating the identification and updating process.
INTERNATIONAL JOURNAL OF REMOTE SENSING
(2022)
Article
Computer Science, Information Systems
Carlos Lopez-Vazquez
Summary: The first order derivatives of a Digital Elevation Model (DEM) are usually computed without an uncertainty estimate. This study proposes a method to compute an uncertainty interval for each partial derivative based on different estimates, improving the accuracy of the derivative calculation. The results show that the intervals for slope and aspect always include the exact value, even with increased cell size. Additionally, a comparison between a synthetic surface and a real case is used to demonstrate the combined effect of representation and truncation error.
INTERNATIONAL JOURNAL OF GEOGRAPHICAL INFORMATION SCIENCE
(2022)
Article
Environmental Sciences
Katerina Gdulova, Jana Maresova, Vojtech Bartak, Marta Szostak, Jaroslav Cervenka, Vitezslav Moudry
Summary: The study found that SRTM and TanDEM-X have similar vertical bias in non-forest areas, with negative values up to -2.5 m and LE90s below 7.8 m. In forests, the vertical bias of SRTM and TanDEM-X ranged from -0.5 to 4.1 m and LE90s from 7.2 to 11.0 m, respectively. The height differences between SRTM and TanDEM-X show moderate dependence on the slope and its orientation.
Article
Construction & Building Technology
H. Zhao, M. Tomko, K. Khoshelham
Summary: This research proposes a change detection method based on LiDAR segmentation for complex indoor environments. It detects differences between a 3D model and the real environment by comparing real LiDAR scans with synthetic LiDAR scans generated in the 3D model. The proposed approach achieves high overall change classification accuracy and enables efficient updating of 3D models using a mobile LiDAR scanner.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Environmental Sciences
Antonio J. Ortiz-Villarejo, Luis-M Gutierrez Soler
Summary: This article presents a low-cost, easy way methodology for diachronically analyzing terrain to search for archaeological evidence, using orthophotographs, DEMs, and LiDAR data. It allows researchers with small budgets and basic GIS and photogrammetry knowledge to undertake aspects of their projects without specialist support.
Article
Environmental Sciences
Benjamin Stular, Edisa Lozic, Stefan Eichert
Summary: This paper introduces the concept of an archaeology-specific DEM and highlights the importance of confidence mapping for archaeological interpretation. The study also discusses the unresolved issue of segmentation in DEM interpolation and aims to contribute to the methodological maturity of airborne LiDAR in archaeology.
Review
Computer Science, Artificial Intelligence
Md Shah Alam, Jared Oluoch
Summary: The detection of safe landing zones for UAVs has become crucial in the age of automation, with UAVs needing to determine the safety of landing areas using onboard sensors for ground information. Image processing and algorithms are used to identify optimal landing points, while existing techniques are critiqued and areas for future improvement are pinpointed. Despite shortcomings, current technologies provide guidance for future advancements and research in safe landing zone detection.
EXPERT SYSTEMS WITH APPLICATIONS
(2021)
Article
Multidisciplinary Sciences
Fanglin Bao, Xueji Wang, Shree Hari Sureshbabu, Gautam Sreekumar, Liping Yang, Vaneet Aggarwal, Vishnu N. N. Boddeti, Zubin Jacob
Summary: Machine perception uses advanced sensors to collect information for situational awareness. State-of-the-art machine perception faces difficulties with increasing number of intelligent agents. Exploiting omnipresent heat signal could be a new frontier for scalable perception. The proposed heat-assisted detection and ranging (HADAR) overcomes the challenge of ghosting and shows promising results compared to AI-enhanced thermal sensing.
Review
Engineering, Geological
Felicia Franca Pereira, Tatiana Sussel Goncalves Mendes, Silvio Jorge Coelho Simoes, Marcio Roberto Magalhaes de Andrade, Mario Luiz Lopes Reiss, Jennifer Fortes Cavalcante Renk, Tatiany Correia da Silva Santos
Summary: Earthquakes, extreme rainfall, or human activity can all lead to landslides, causing casualties and economic consequences. Landslide susceptibility mapping is an important technique for predicting such events, and this study compares maps generated by RF algorithm with LiDAR and UAV data. The results show that both models have high accuracy and AUC, with the LiDAR-based model being more accurate. The study also highlights the potential of UAV data in mapping landslide susceptibility on an intra-urban scale.
Article
Energy & Fuels
Stanislaw Szombara, Marta Rog, Krystian Koziol, Kamil Maciuk, Bogdan Skorupa, Jacek Kudrys, Tomas Lepeska, Michal Apollo
Summary: Advancements in remote data acquisition techniques have led to an abundance of spatial data sets and information in society. This article focuses on analyzing and comparing the heights of the 14 highest peaks of the Polish Carpathians using various data sources, highlighting the significance of geodetic measurements in determining mountain peak heights.
Article
Forestry
Mihnea Cateanu, Arcadie Ciubotaru
Summary: This paper conducted a quantitative analysis of the accuracy of DTMs obtained from LiDAR data using three different interpolation algorithms. The results showed that LiDAR can still provide relatively good accuracy even with reduced sampling density, as long as an appropriate interpolation algorithm is used. The study highlights the importance of point data density in ground surface modeling accuracy and the significant impact of interpolation algorithms on the results.
Article
Environmental Sciences
Rok Ciglic, Spela Conc, Mateja Breg Valjavec
Summary: This study aims to highlight the applicability of high-resolution relief laser scanning data in geomorphological studies of karst depressions. Through empirical research in three areas of the Slovene Dinaric Karst, it was found that different data preprocessing and detection methods can influence the number and geomorphometric characteristics of depressions, as well as comparisons between study areas.
Article
Computer Science, Information Systems
Usharani Bhimavarapu
Summary: Hypertension retinopathy is a retinal disease caused by hypertension, leading to vision loss and blindness. This paper introduces an automated system that can identify hypertension retinopathy in its early stage. By using fuzzy logic techniques in digital image processing and a nature-inspired optimization algorithm, improved Fuzzy C-Means clustering accurately identifies the lesion regions in hypertensive retinopathy.
MULTIMEDIA TOOLS AND APPLICATIONS
(2023)
Article
Computer Science, Interdisciplinary Applications
Matthew Nahorniak, Joe Wheaton, Carol Volk, Phillip Bailey, Matt Reimer, Eric Wall, Kelly Whitehead, Chris Jordan
COMPUTERS & GEOSCIENCES
(2018)
Article
Environmental Sciences
William W. Macfarlane, Jordan T. Gilbert, Joshua D. Gilbert, William C. Saunders, Nate Hough-Snee, Chalese Hafen, Joseph M. Wheaton, Stephen N. Bennett
ENVIRONMENTAL MANAGEMENT
(2018)
Article
Multidisciplinary Sciences
Daniel Hamill, Daniel Buscombe, Joseph M. Wheaton
Article
Ecology
Nicholas L. Silverman, Brady W. Allred, John Patrick Donnelly, Teresa B. Chapman, Jeremy D. Maestas, Joseph M. Wheaton, Jeff White, David E. Naugle
RESTORATION ECOLOGY
(2019)
Article
Geography, Physical
Gary R. O'Brien, Joseph M. Wheaton, Kirstie Fryirs, William W. Macfarlane, Gary Brierley, Kelly Whitehead, Jordan Gilbert, Carol Volk
EARTH SURFACE PROCESSES AND LANDFORMS
(2019)
Article
Geography, Physical
Manel Llena, Mark W. Smith, Joseph M. Wheaton, Damia Vericat
EARTH SURFACE PROCESSES AND LANDFORMS
(2020)
Article
Geography, Physical
Manel Llena, Damia Vericat, Mark W. Smith, Joseph M. Wheaton
EARTH SURFACE PROCESSES AND LANDFORMS
(2020)
Article
Geography, Physical
Konrad C. Hafen, Joseph M. Wheaton, Brett B. Roper, Philip Bailey, Nicolaas Bouwes
EARTH SURFACE PROCESSES AND LANDFORMS
(2020)
Article
Environmental Sciences
Robyn L. Bilski, Joseph M. Wheaton, Joseph E. Merz
Summary: This research investigates the impact of in-channel structure on the hydraulics and hyporheic flow of a river, and examines the relationship between these changes and the survival, development, and growth of Chinook salmon embryos. The study finds that in-channel structure disrupts water velocity patterns and creates pressure differences, leading to increased vertical hydraulic gradients within the subsurface. While overall there is no significant increase in the survival, development, and growth of Chinook salmon embryos, certain downstream areas with low gradients and in-channel structure show significantly higher rates of survival, development, and growth.
Article
Environmental Sciences
Peter Skidmore, Joseph Wheaton
Summary: Rivers have been globally diminished, simplified, and degraded due to concentrated agriculture, transportation, and development, limiting their ecological health and value. Recent river management trends present an opportunity to address ecological degradation and climate stress. Focusing on riverscapes as critical natural infrastructure can enhance resilience to climate change and restore river ecosystem health.
Article
Geography, Physical
Alan Kasprak, James Brasington, Konrad Hafen, Richard D. Williams, Joseph M. Wheaton
EARTH SURFACE DYNAMICS
(2019)
Article
Ecology
Peter A. McHugh, W. Carl Saunders, Nicolaas Bouwes, C. Eric Wall, Sara Bangen, Joseph M. Wheaton, Matthew Nahorniak, James R. Ruzycki, Ian A. Tattam, Chris E. Jordan
ECOLOGICAL MODELLING
(2017)
Article
Fisheries
C. Eric Wall, Nicolaas Bouwes, Joseph M. Wheaton, Stephen N. Bennett, W. Carl Saunders, Pete A. McHugh, Chris E. Jordan
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2017)
Article
Geosciences, Multidisciplinary
Daniel J. Karran, Cherie J. Westbrook, Joseph M. Wheaton, Carol A. Johnston, Angela Bedard-Haughn
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2017)
Article
Geography, Physical
Joseph M. Wheaton, Nicolaas Bouwes, Peter Mchugh, Carl Saunders, Sara Bangen, Phillip Bailey, Matt Nahorniak, Eric Wall, Chris Jordan
EARTH SURFACE PROCESSES AND LANDFORMS
(2018)
Article
Geography, Physical
A. Securo, C. Del Gobbo, L. Rettig, S. Pillon, A. De Luca, D. Fontana, E. Benedetti Fasil, R. R. Colucci
Summary: Small glaciers in temperate mountain regions have experienced significant reduction and unprecedented melt rates in recent years. Some glaciers have transitioned from clean ice to debris-covered or even rock glaciers. This study examines the surface elevation change of the Popera Alto glacier in the Sesto Dolomites using LiDAR and Structure from Motion surveys, and analyzes its evolution in terms of surface cover and geomorphic processes. The glacier has lost an average of 0.35 m water equivalent per year over the past 16 years, with active modification of its surface cover by geomorphic processes. The role of debris and local topography feedback has allowed the resilience of the glacier, leading to a marked difference between the current environmental equilibrium line altitude (envELA) and the effective ELA (effELA) of the glacier.
Article
Geography, Physical
Zhenzhen Yan, Yaolin Shi, Lili Kang, Xiangtao Fan
Summary: This study proposes a quantitative regional deformation model based on global positioning system (GPS) data to quantitatively analyze the morphological evolution of rivers in the Three Rivers Region. It finds that tectonic deformation phases significantly control regional landscape development and drainage features.
Article
Geography, Physical
Said Mukhtar Ahmad, Nitheshnirmal Sadhasivam, Mona Lisa, Luigi Lombardo, Mustafa Kemal Emil, Amira Zaki, Cees J. Van Westen, Islam Fadel, Hakan Tanyas
Summary: In this study, we investigated a large slow-moving landslide in Northern Pakistan, using Interferometric Synthetic Aperture Radar (InSAR) analysis. Our results showed that the crown of the landslide is moving faster than the surrounding regions, while the footslope experienced high deformations. We discussed the possible roles of meteorologic and anthropogenic factors in causing these deformations.
Article
Geography, Physical
Shuang Bian, Xibin Tan, Yiduo Liu, Suoya Fan, Junfeng Gong, Chao Zhou, Feng Shi, Michael A. Murphy
Summary: The Yarlung River's drainage divide is primarily moving north due to variations in precipitation across the Himalayas. The Gangdese drainage divide shows predominantly northward and southward migration, controlled by base-level rise and downstream influences. The presence of north-trending rifts separates the drainage divides into five zones, each with a distinct migration pattern.
Article
Geography, Physical
Joon-Young Park, Seok Yoon, Deuk-Hwan Lee, Seung-Rae Lee, Hwan-Hui Lim
Summary: This study developed a multiple-regression model to estimate site-specific average growth rates of debris flow events. The proposed model was validated through a case study and showed reasonable predictions of debris flow velocities and heights.
Article
Geography, Physical
Nicholas Reilly Mccarroll, Arnaud Temme
Summary: New geochronological data from hillslope boulder armor in the Flint Hills reveal the rates and timing of lateral retreat in the landscape. Surfaces of limestone boulders dating back to the Pleistocene era were found, and the ages of the hillslope armor increased with distance from the limestone bench. The estimated rate of lateral retreat in this landscape is 0.02 mm/yr.
Article
Geography, Physical
Xinbo Yao, Yuntao Tian
Summary: By studying the Longmenshan-Minshan drainage divide, we found that it has reached a dynamic steady state, indicating a balance between erosion and rock uplift. This study also reveals the process of formation and evolution of the divide and raises questions about the effectiveness of divide migration metrics.
Article
Geography, Physical
Junhui Yu, Pin Yan, Yanlin Wang, Guangjian Zhong, Changliang Chen
Summary: The seafloor mounds in the Chaoshan Depression of the South China Sea are identified as mud volcanoes, with fluids coming from underlying mud-fluid diapirs. The hydrocarbon gases feeding the mud volcanoes and diapirs are reasoned to originate from deep Mesozoic source rocks, indicating significant Mesozoic hydrocarbon potential in the Chaoshan Depression.
Article
Geography, Physical
Marius Huber, Luc Scholtes, Jerome Lave
Summary: This paper investigates the relationships between hillslope stability and fabric anisotropy of brittle rock materials and the implications for landscape shaping. It explores the different stability modes and movement characteristics of anisotropic materials, and demonstrates the significant control of material anisotropy on landscape shaping.
Article
Geography, Physical
Shubhra Sharma, Anil D. Shukla
Summary: The study investigates the relationship between glacial dynamics and lake sedimentation during the mid-Holocene climate variability in the Southern Zanskar ranges. It utilizes geomorphological disposition, elemental geochemistry, and optical chronology of relict lake sediment to reconstruct the pattern of minor glacier responses to climate variability. The results indicate six centennial to millennial-scale climatic phases, with warmer phases represented by decreased mineralogical fine grain flux and increased coarse grain flux. The study highlights the potential of relict lake sediment and para/peri-glacial landforms in understanding glacial dynamics and climate change during the Holocene.
Article
Geography, Physical
Jean-Francois Bernier, Sydney W. Meury, Patrick Lajeunesse
Summary: In this study, an approach combining various data and observation methods was proposed to improve the monitoring of landfast ice dynamics and its geomorphic impact on sedimentary systems. The results demonstrate the ability of the approach to accurately measure interannual variations in landfast ice and constrain geomorphic changes. Additionally, the study found a strong relationship between the severity of freezing seasons and the response of landfast ice to hydrometeorological events, with different geomorphic responses observed under different winter conditions.
Article
Geography, Physical
Heping Shu, Fanyu Zhang
Summary: This study investigates the relationship between susceptibility of soil-water hazards and human activities, geoheritage sites in the Loess Plateau, China. Landslide and gully erosion susceptibility were obtained using gradient boosting and support vector machines, and a hazard matrix was formed to couple landslide and gully erosion susceptibility. The study found different trends in the magnification times of soil-water hazards chain under different scenarios.
Article
Geography, Physical
Guangqiang Qian, Zhuanling Yang, Xuegang Xing, Zhibao Dong, Youyuan Guo
Summary: Granule ripples are aeolian landforms armored against erosion by coarse grains. This study investigates their seasonal morphological evolution and migration in the Sanlongsha Dune Field. The findings show that wind events, especially those exceeding the threshold velocities of coarse grains, significantly influence the morphodynamics of granule ripples. The study highlights the importance of considering the reptation and saltation of coarse grains in future research on granule ripples.