Article
Remote Sensing
Martin Mokros, Tomas Mikita, Arunima Singh, Julian Tomastik, Juliana Chuda, Piotr Wezyk, Karel Kuzelka, Peter Surovy, Martin Klimanek, Karolina Zieba-Kulawik, Rogerio Bobrowski, Xinlian Liang
Summary: The development of devices capable of generating 3D point clouds of the forest has flourished in recent years. Low-cost technologies such as MultiCam, iPad Pro, GeoSlam Horizon, and FARO Focus s70 were compared for tree detection and diameter at breast height estimation. Results showed that TLS provided the most accurate data, while iPad Pro achieved results closest to TLS when DBH > 7 cm.
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
(2021)
Article
Environmental Sciences
Tomas Fernandez, Jose L. Perez-Garcia, Jose M. Gomez-Lopez, Javier Cardenal, Francisco Moya, Jorge Delgado
Summary: This paper utilizes aerial photogrammetry and LiDAR techniques to analyze landslide activity in an area near Jaen, Southern Spain over a 32-year period. By processing data and combining photointerpretation, multiple types of landslides were identified, and different periods of activity were related to rainy events and dry years.
Article
Environmental Sciences
Ahmed Elaksher, Tarig Ali, Abdullatif Alharthy
Summary: Airborne laser scanning sensors can collect a large number of 3D topographic points quickly, providing high-resolution depictions of complex objects. This research presents a detailed evaluation of LIDAR system and quantifies the quality of LIDAR data, an aspect often overlooked in published studies. Field surveying is used to evaluate the planimetric and height accuracy of the LIDAR data. The average elevation discrepancy is 0.12 m, and the RMSE of horizontal offsets is approximately 0.50 m. The height discrepancies have both random short-period variations and biases from the geo-positioning system.
Article
Environmental Sciences
Antonio Tomas Mozas-Calvache, Jose Miguel Gomez-Lopez, Jose Luis Perez-Garcia
Summary: This study presents a methodology for documenting archaeological areas by utilizing geomatic techniques such as LiDAR and photogrammetry. The approach involves obtaining products at various scales and dates to model the evolution of the archaeological work. The methodology successfully combines LiDAR point clouds with photogrammetry to enhance the geometry and texture of the obtained results. The study demonstrates the feasibility of this methodology and integrates all the outcomes into an interactive website.
Article
Engineering, Multidisciplinary
Ismail Elkhrachy
Summary: This study aimed to produce accurate geospatial 3D data from UAV images. The solution generated met the 2015 ASPRS accuracy standards, with horizontal RMSE values of 4-6 cm and vertical accuracy of 5-6 cm, which were twice and three times the Ground Sample Distance (GSD), respectively.
ALEXANDRIA ENGINEERING JOURNAL
(2021)
Article
Chemistry, Analytical
Jairaj Desai, Jidong Liu, Robert Hainje, Robert Oleksy, Ayman Habib, Darcy Bullock
Summary: This study investigates the potential and accuracy of using LiDAR technology in consumer handheld electronic devices for mapping vehicle damage profiles. Proposed methodology and subsequent measurement accuracy comparisons suggest that this technology may be sufficient and acceptable for most forensic studies.
Article
Remote Sensing
Daniel Kuekenbrink, Mauro Marty, Ruedi Boesch, Christian Ginzler
Summary: This study evaluates the performance of different close-range remote sensing devices for tree detection and diameter at breast height (DBH) extraction in forests. The results show that terrestrial laser scanning systems (TLS) have the highest tree detection rate, while drone-based laser scanning systems (UAVLS) have the lowest tree detection rate. The novel GoPro approach performs moderately well in tree detection and is comparable to LiDAR devices in DBH extraction.
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
(2022)
Article
Environmental Sciences
Anne Kinsey-Henderson, Aaron Hawdon, Rebecca Bartley, Scott N. Wilkinson, Thomas Lowe
Summary: In-depth understanding of gully erosion processes is crucial for monitoring gully remediation efforts, and fine-scale monitoring can be achieved using Hand-held Laser Scanning systems (HLS). The study quantified errors in measuring gully morphology and erosion over a four year period, finding that HLS provided similar levels of accuracy and was relatively faster compared to TLS and RTK. Improvements in error rates could potentially be made by scanning during times of the year with less ground vegetation cover.
Article
Geography, Physical
Zuzanna M. Swirad, Adam P. Young
Summary: Airborne LiDAR datasets were used to measure erosion and retreat along 866 km of California coastal cliffs between 2009-2011 and 2016. The results showed that erosion exceeding the level of detection was observed at 55% of cliffs, with more erosion in northern California compared to southern and central California. Retreat rates were higher for unarmored cliffs and cliffs fronted by sandy beaches. The average cliff top retreat rates were lower than in previous studies, but the average cliff face retreat rates were similar for different time periods.
Article
Environmental Sciences
Carlotta Parenti, Paolo Rossi, Francesco Mancini, Vittoria Scorpio, Francesca Grassi, Giuseppe Ciccarese, Francesca Lugli, Mauro Soldati
Summary: The relationships between hillslope and fluvial processes were investigated in two study sites in the Northern Apennines. Long-term analysis based on aerial photos and short-term analysis using monitoring campaigns revealed the important role of fluvial processes in landslide activity and sediment transport.
Article
Environmental Sciences
Ansgar Dreier, Jannik Janssen, Heiner Kuhlmann, Lasse Klingbeil
Summary: This paper examines the quality analysis of direct georeferencing of a UAV-based laser scanning system, showing that the system has a precision of <1.2 cm in both horizontal and vertical directions, and an absolute accuracy of <2 cm horizontally and <4 cm vertically compared to TLS reference. The study also investigates the influence of different GNSS master stations, finding no significant difference between VRS and dedicated master stations.
Article
Environmental Sciences
Xiangxiong Kong
Summary: This study introduces a novel cliff monitoring methodology that does not rely on georeferencing efforts, producing reliable monitoring results by processing 3D point clouds and aligning them using a rigid registration protocol. Experimental findings demonstrate the efficiency of this approach in small-scale experiments and full-scale field validation, highlighting its significance for underserved coastal communities.
Article
Remote Sensing
Elizabeth M. Prior, Valerie A. Thomas, Randolph H. Wynne
Summary: This study compared canopy heights derived from NAIP DSMs and point clouds to those derived from lidar data, and found that the 90th percentiles of heights derived from the point clouds were better at estimating mean dominant height (MDH) than the comparatively coarse resolution DSM. The main limitation of the NAIP datasets was found to be shadowing caused by steep terrain. However, in closed-canopy temperate deciduous forests without shadowing, the mean dominant heights estimated using NAIP DSMs and point clouds are comparable to those estimated using lidar data.
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
(2022)
Article
Environmental Sciences
Grigorijs Goldbergs
Summary: This study compared the performance of large-format airborne and satellite imagery, as well as airborne laser scanning (ALS) data, in estimating growing stock in Latvian hemiboreal forests. The results showed that ALS and image-based height metrics had comparable effectiveness in predicting growing stock in dense closed-canopy forests. The research suggests that regularly collected airborne imagery and image-based CHMs can be an efficient solution for forest growing stock calculations and updates. VHRSI can also be a fast and affordable solution for monitoring forest growing stock changes in vast and dense forestland.
Article
Dentistry, Oral Surgery & Medicine
Marta Revilla-Leon, Wael Att, Mutlu Ozcan, Jeffrey Rubenstein
Summary: This study aimed to compare the accuracy of implant abutment replica positions obtained using conventional techniques, photogrammetry, and two intraoral scanners. The results showed that the conventional technique reported the lowest 3D discrepancy for the implant abutment position translation capabilities, while the photogrammetry system provided the least accurate values.
JOURNAL OF PROSTHETIC DENTISTRY
(2021)
Review
Limnology
Stephanie E. Hampton, Suzanne McGowan, Ted Ozersky, Salvatore G. P. Virdis, Tuong Thuy Vu, Trisha L. Spanbauer, Benjamin M. Kraemer, George Swann, Anson W. Mackay, Stephen M. Powers, Michael F. Meyer, Stephanie G. Labou, Catherine M. O'Reilly, Morgan DiCarlo, Aaron W. E. Galloway, Sherilyn C. Fritz
LIMNOLOGY AND OCEANOGRAPHY
(2018)
Article
Environmental Sciences
Belinda Gallardo, Arthur E. Bogan, Sahana Harun, Leonardo Jainih, Manuel Lopes-Lima, Manuel Pizarro, Khairul Adha Rahim, Ronaldo Sousa, Salvatore G. P. Virdis, Alexandra Zieritz
SCIENCE OF THE TOTAL ENVIRONMENT
(2018)
Article
Environmental Sciences
Eduardo R. Oliveira, Leonardo Disperati, Luca Cenci, Luisa Gomes Pereira, Fatima L. Alves
Article
Environmental Sciences
Salvatore G. P. Virdis, Nooch Soodcharoen, Antonella Luglie, Bachisio M. Padedda
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Environmental Sciences
Stefano Cuccuru, Ferdinando Deluca, Giovanni Mongelli, Giacomo Oggiano
ENVIRONMENTAL EARTH SCIENCES
(2020)
Article
Geography
F. Secchi, S. Naitza, G. Oggiano, S. Cuccuru, A. Puccini, A. M. Conte, T. Giovanardi, M. Mazzucchelli
Summary: This paper discusses the geological mapping of the late-Variscan Sarrabus pluton in south-eastern Sardinia, revealing a scenario of multiple generations of igneous rocks and determining the emplacement age of the pluton. The study suggests that the magmatic activity of the pluton was controlled by an east-west trending shear zone, followed by the shallower emplacement of several pulses of independent granite magmas.
Article
Environmental Sciences
Eduardo R. Oliveira, Leonardo Disperati, Fatima L. Alves
Summary: This study introduces a change detection method (MINDED-BA) for determining burned extents from multispectral remote sensing imagery, utilizing a multi-index image-differencing approach and magnitude analysis. The model, developed from a previous model (MINDED) initially for flood extents estimation, achieved high overall accuracies and automation levels, demonstrating its potential for reliable systematic unsupervised classification of burned areas. The innovative modelling workflow includes preprocessing steps to address important error sources and an optimal bin number selection procedure for thresholding in burn-related changes classification.
Article
Green & Sustainable Science & Technology
Md. Mizanur Rahman, Faisal AlThobiani, Shamsuddin Shahid, Salvatore Gonario Pasquale Virdis, Mohammad Kamruzzaman, Hafijur Rahaman, Md. Abdul Momin, Md. Belal Hossain, Emad Ismat Ghandourah
Summary: This research integrates multiple data sources to assess the groundwater potential in the Gazipur district of Bangladesh using a multi-criteria decision-making approach. The results show that the groundwater potential in the area varies from very low to very high, with the majority falling into the medium to high categories. This study provides a valuable tool for planning and sustainable management of groundwater resources.
Article
Forestry
Kamonporn Upakankaew, Sarawut Ninsawat, Salvatore G. P. Virdis, Nophea Sasaki
Summary: The study successfully differentiated changes in different stages of mangroves in Samut Songkhram province, Thailand using data from Sentinel-1 and Sentinel-2 satellites, demonstrating the utility of multi-temporal data in evaluating mangroves.
Article
Environmental Sciences
Thi Phuoc Lai Nguyen, Salvatore G. P. Virdis, Ekbordin Winjikul
Summary: This study assessed the perceptions and health symptoms of vulnerable socio-economic groups in the world of work in Bangkok, Thailand, caused by low urban air quality. The research findings revealed a correlation between air quality-monitoring data and health symptoms among different socio-economic groups, but a disparity between air quality-monitoring data and people's perceptions of air quality. Additionally, it found that workers near streets, highways, and industrial zones faced more health risks related to low air quality, and informal sector workers were more affected than formal sector workers. The study emphasizes the importance of effective air pollution communication and access to primary care organizations and community health care centers to address the health needs of the informal sector worker population.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Environmental Sciences
Eduardo R. Oliveira, Leonardo Disperati, Fatima L. Alves
Summary: This paper presents the MINDED-FBA, a remote-sensing-based tool for determining flooded and burned areas. The tool, distributed as a QGIS plugin, adapts and develops the previously published Multi Index Image Differencing methods (MINDED and MINDED-BA) to integrate a wider variety of satellite sensor datasets. The tool's performance is evaluated in six case studies across different countries and conditions, and compared to reference delineation datasets. The results show that using SAR data is effective for delineating flooding, while optical multispectral data performs best for burned areas. However, combining both types of remote sensing data also provides high correlations with reference datasets, making the MINDED-FBA tool a potential near-real-time solution for emergency response.
Article
Geosciences, Multidisciplinary
Michele Amaddii, Giorgio Rosatti, Daniel Zugliani, Lorenzo Marzini, Leonardo Disperati
Summary: This paper presents the back analysis of a debris flow event that occurred in the Mt. Amiata area of Italy in 2019. Through a multidisciplinary approach and numerical models, the study successfully reconstructs the event and its impacts. The results demonstrate that the proposed methodology is robust, effective, and capable of accurate prediction.
Article
Forestry
Lorenzo Marzini, Daniele Ciofini, Juri Agresti, Leonardo Ciaccheri, Enrico D'Addario, Leonardo Disperati, Salvatore Siano, Iacopo Osticioli
Summary: In this study, Raman, Fourier Transform Infrared (FTIR), and Laser-Induced Breakdown Spectroscopy (LIBS) techniques were used to assess the influence of plant root composition on shallow landslide occurrence. The results showed a correlation between the biochemical constituents of wooden roots and the sampling areas. Different content of lignin/cellulose and mineral nutrients were detected in roots collected from areas affected by shallow landslides.
Article
Green & Sustainable Science & Technology
Roshan Bhandari, Wenchao Xue, Salvatore G. P. Virdis, Ekbordin Winijkul, Thi Phuoc Lai Nguyen, Suraj Joshi
Summary: Urbanization in developing countries is growing at a faster pace than population growth, leading to stress on the environment and hindering sustainable development. This study assessed the variations in land consumption rate and population growth rate in Thailand from 2000 to 2020, finding that urban expansion is disproportionate with population growth in most areas. The study highlights the importance of promoting more sustainable growth in Thai provinces and regions.
Article
Meteorology & Atmospheric Sciences
Yadanar Kyaw, Thi Phuoc Lai Nguyen, Ekbordin Winijkul, Wenchao Xue, Salvatore G. P. Virdis
Summary: This study examines the trends of climate variability and its impact on crop yields and farm net income in Chiang Mai province, Thailand. The findings suggest that while annual rainfall remains unchanged, the annual temperature has been increasing over time. Higher temperature has a negative effect on longan yield but a positive effect on maize, with no significant impact on rice yield. The trend in rainfall does not affect crop yields. Farm net income is not influenced by individual crop types but relies on cumulative output and geographic location.