Egyptian Journal of Remote Sensing and Space Sciences最新文献

{"title":"Bridging data gaps in Earth's gravity field from integrating GRACE, GRACE-FO, and Swarm data: Case study in Africa","authors":"Hussein A. Mohasseb ,&nbsp;Wenbin Shen ,&nbsp;Jiashuang Jiao","doi":"10.1016/j.ejrs.2024.04.003","DOIUrl":"https://doi.org/10.1016/j.ejrs.2024.04.003","url":null,"abstract":"<div><p>The GRACE and GRACE Follow-On (GFO) missions, led by American and German teams, along with the European mission Swarm, have revolutionized the study of Earth's dynamic gravity field through precise measurements. Our objective is to fill the data GRACE gaps and the gap between GRACE and GFO missions using Swarm data, focusing on Africa. We utilized data from GRACE processing centers (CSR, GFZ, and JPL), Swarm data from the Czech Academy of Sciences (ASU) and the International Combination Service for Time-variable Gravity (COST-G), QF, as well as IGG data. Both frequency and space domains were examined, evaluating Potential Degree Variances (PDV), harmonic coefficients, Terrestrial Water Storage (TWS), gravity anomaly, and potential/geoid using GRACE, GFO, and Swarm. Results indicated agreement among processing centers for potential degree variances, gravity anomaly, and geoid undulation. However, discrepancies were observed in harmonic coefficients and TWS. To address this, we employed parametric least square adjustment to estimate new Swarm-modified coefficients, selecting Swarm ASU and GRACE/GFO CSR data. Comparison of Singular Spectrum Analysis method (SSA), IGG, and Swarm-modified SHCs during the data gap period exhibited correlation coefficients exceeding 0.86. Overall, the new coefficients significantly improved agreement between original GRACE coefficients and modified coefficients in all aspects.</p></div>","PeriodicalId":48539,"journal":{"name":"Egyptian Journal of Remote Sensing and Space Sciences","volume":"27 2","pages":"Pages 466-478"},"PeriodicalIF":6.4,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1110982324000322/pdfft?md5=0d9fdb37bf57cd6cbb5f3ffe2c986faa&pid=1-s2.0-S1110982324000322-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140893448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mapping moon craters: Scientific knowledge from 1965 to 2022: Systematic review","authors":"Azizah Aziz Al Shehri","doi":"10.1016/j.ejrs.2024.04.001","DOIUrl":"https://doi.org/10.1016/j.ejrs.2024.04.001","url":null,"abstract":"<div><p>This systematic review examines development of techniques used in lunar crater mapping between 1965 and 2022. Using the Web of Science and Google Scholar databases, the systematic review adhered to specific criteria that focus on post-1965 research articles in English. Through using Boolean operations and guided by the PRISMA Framework, the search yielded 20 pertinent articles. The findings reveal that from 1965 to 1980, techniques like radar and infrared mapping were used, alongside the Lunar Radar Sounder for subsurface studies and terrain mapping to analyse surface roughness and topography. Contour maps helped in understanding lunar magnetic fields. Between 1981 and 2000, lunar mapping evolved to include gamma-ray spectrometry for elemental analysis, electron reflection studies for crustal magnetic field analysis, cratering records for comparative planetology, lander-rover systems for resource exploration and laser ranging for asteroid studies. From 2001 to 2022, advancements included automatic crater detection algorithms, comprehensive lunar characteristic reviews from recent missions and remote sensing for detailed crater analysis. High-resolution data provided views into crater composition and morphology and aid in small crater cataloguing and depth-to-diameter measurements mainly at the Lunar South Pole. The discussion section highlights those initial telescopic observations gave way to quantitative studies during the Space Age. Modern developments include rovers, high-resolution cameras and advanced algorithms for geological analysis. Calibration methods (e.g., the Robotic Lunar Observatory ROLO model, GIRO (Global Space-based Inter-Calibration System), and radiance calibration) have also been critical. This technological evolution has enhanced understanding of the Moon and its role in the solar system.</p></div>","PeriodicalId":48539,"journal":{"name":"Egyptian Journal of Remote Sensing and Space Sciences","volume":"27 2","pages":"Pages 456-465"},"PeriodicalIF":6.4,"publicationDate":"2024-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1110982324000292/pdfft?md5=dbf56bf9ca6dab144f7955c9c3e94dc5&pid=1-s2.0-S1110982324000292-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140824799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrated multispectral remote sensing approach for high-resolution spectral characterization and automated mapping of carbonate lithofacies","authors":"Ahmed Hammam ,&nbsp;Asmaa Korin ,&nbsp;Adhipa Herlambang ,&nbsp;Khalid Al–Ramadan ,&nbsp;Ardiansyah Koeshidayatullah","doi":"10.1016/j.ejrs.2024.04.009","DOIUrl":"https://doi.org/10.1016/j.ejrs.2024.04.009","url":null,"abstract":"<div><p>Field-based high-resolution carbonate facies mapping is often challenging due to the limited accessible exposure, high-degree of heterogeneity, and lack of distinct natural characteristics between different lithofacies. To mitigate this issue, we proposed a novel approach by integrating multispectral remote sensing, advanced image processing techniques, and supervised classification to perform high-resolution carbonate lithofacies mapping and utilized the extensive Mesozoic carbonate in Saudi Arabia as an example. For this study, the Tuwaiq Mountain Formation (TMF) was selected not only because of its wide aerial distribution but also its importance as conventional and unconventional hydrocarbon reservoirs in the subsurface. Our proposed method was able to map and delineate different members (T₁, T₂, T₃) and key lithofacies in the TMF. In addition, based on the spectral characteristics, the middle member of TMF (T₂) can be further subdivided into two subunits (T_2-a of higher reflectance &amp; T_2-b of lower reflectance). These findings are further corroborated by detailed microfacies analysis, which validates the presence of two sub-members of T₂ (T_2-a: Spiculitic foraminiferal wackestone and T_2-b: Coralline floatstone facies). This resulted in a revised and accurate lithofacies map that made significant modifications over older maps. The overall accuracy of TMF lithofacies is 93.4 % with a kappa coefficient of 0.88. This study demonstrates that multispectral remote sensing approach are effective at distinguishing different carbonate units and providing high-resolution carbonate facies maps. The proposed approach should be applicable to other carbonate outcrops globally and could help in improving carbonate lithofacies mapping where the outcrops are not accessible.</p></div>","PeriodicalId":48539,"journal":{"name":"Egyptian Journal of Remote Sensing and Space Sciences","volume":"27 2","pages":"Pages 436-455"},"PeriodicalIF":6.4,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1110982324000383/pdfft?md5=1ad83b7b7965451e4c89f0a8dcb3110a&pid=1-s2.0-S1110982324000383-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140650097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeling remote-sensing and geophysical data to delineate the favorable mineralization localities at Semna area, Central Eastern Desert, Egypt","authors":"H.F. Ali ,&nbsp;A.S.A. Abu El Ata ,&nbsp;A.M. Lala ,&nbsp;M.A.S. Youssef ,&nbsp;S.M. Salem","doi":"10.1016/j.ejrs.2024.04.010","DOIUrl":"https://doi.org/10.1016/j.ejrs.2024.04.010","url":null,"abstract":"<div><p>Semna area is located within the Golden Triangle district in the Central Eastern Desert of Egypt. The study maintains using multisource datasets of remote sensing, aero-spectrometry, aero-magnetic, and field investigations for unraveling the ambiguities associated with the alteration zones at the targeted area. Three remote sensing mapping techniques including; constrained energy minimization, linear spectral unmixing, and mineral indices, were adopted to delineate the alteration zones. The γ-ray spectrometry data of K (%), K/eTh, K/eU, and F-parameter enabled mapping the potassium-enriched localities as indication on possible potassic alteration zones. The surface and subsurface linear structural features were delineated from the digital elevation model and aero-magnetic data, respectively. The outcomes of all the implemented datasets were integrated using GIS overlay modeling, producing an integrated mineralization favorability/potentiality map. Eighteen localities with high potential for mineralization were highlighted. A field study was conducted to the investigated area during which, several alteration indicators were observed, including quartz veins, iron oxides staining, kaolinite, malachite, carbonate, and muscovite (sericite) alteration indicator minerals.</p></div>","PeriodicalId":48539,"journal":{"name":"Egyptian Journal of Remote Sensing and Space Sciences","volume":"27 2","pages":"Pages 416-435"},"PeriodicalIF":6.4,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1110982324000395/pdfft?md5=874efd8ece4b979e3396324e269f4352&pid=1-s2.0-S1110982324000395-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140650095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantification of landuse changes driven by the dynamics of the Jamuna River, a giant tropical river of Bangladesh","authors":"Md. Mahin Uddin ,&nbsp;Md. Bodruddoza Mia ,&nbsp;Md. Yousuf Gazi ,&nbsp;A.S.M. Maksud Kamal","doi":"10.1016/j.ejrs.2024.04.004","DOIUrl":"https://doi.org/10.1016/j.ejrs.2024.04.004","url":null,"abstract":"<div><p>Changes in river bank location have wide consequences on floodplain communities and the sustainability of floodplain ecosystems. Although river dynamics are monitored globally and locally, understanding the impact of riverine dynamics on land use change remains a challenge. Bangladesh, part of the Bengal Delta, is mostly made up of alluvial deposits and is crisscrossed by so many rivers. Jamuna is one of the prominent rivers in this region. This study presents a consistent evaluation of the dynamics of the Jamuna river and ensuing changes in land use over 48 years (1972–2020) depending on satellite observations and geospatial analysis. Changes in the presence of water were used to estimate the advance/retreat of the banks and loss/gain of land along 257 perpendicular transects along the common pattern of the centerlines of the river. We found that the overall loss of agricultural land was about 535.01 km², sevenfold of the gained agricultural land. Other land use losses were bare lands 136.73 km², waterbodies 80.37 km², settlement 67.28 km² and vegetation 132.79 km² against 48.47 km², 3.52 km², 23.76 km² and 6.14 km² land use gains respectively. Agricultural land loss impacts the livelihood of the floodplain dwellers and settlement loss causes internal migration. This pattern of land use change driven by the river dynamics has created newer environmental challenges and additionally, climate change may intricate the situation in the future. The findings of this study throw insight into the fact and may aid in sustainable river training measures and floodplain management.</p></div>","PeriodicalId":48539,"journal":{"name":"Egyptian Journal of Remote Sensing and Space Sciences","volume":"27 2","pages":"Pages 392-402"},"PeriodicalIF":6.4,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1110982324000334/pdfft?md5=5026d73172ffea4e8fd3c46b145a293b&pid=1-s2.0-S1110982324000334-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140647537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multisource spatiotemporal analysis of cropping patterns on dry upland: A case study in Rubaru Sub-district, Sumenep Regency","authors":"Fadhlullah Ramadhani ,&nbsp;Elza Surmaini ,&nbsp;Ai Dariah ,&nbsp;Yayan Apriyana ,&nbsp;Woro Estiningtyas ,&nbsp;Erni Susanti ,&nbsp;Rahmah Dewi Yustika ,&nbsp;Yeli Sarvina ,&nbsp;Yudi Riadi Fanggidae ,&nbsp;Nurjaya Nurjaya","doi":"10.1016/j.ejrs.2024.04.008","DOIUrl":"https://doi.org/10.1016/j.ejrs.2024.04.008","url":null,"abstract":"<div><p>Dry upland agriculture is vital for securing food production in several countries. However, the research on evaluating cropping patterns using remote sensing techniques is completely neglected due to several factors such as the availability of clean imagery and the complexity of the landscape. This research primarily focused on the evaluation of data availability from three different satellite imageries: Sentinel-2, Landsat-8, and MODIS. The consistently high data availability demonstrated by Sentinel-2 established its potential as a reliable source for gap-filling analysis in remote sensing studies. Using a classification model, various land cover types were identified with an overall accuracy of 86.4%, indicating the model's efficiency in accurately classifying these areas. This research also analyzed the detailed cropping patterns, revealing seven distinct temporal cultivation patterns of various crops. This period is strategically positioned between the cultivation of maize, which spans an area of 5,943 ha in December, January, and February, suggesting a potential crop rotation system. The rotation indicated that nearly 83.7% of the cultivated land was planted between maize and shallot throughout the year. The study emphasizes the significance of continuous monitoring and adaptive management in agriculture to ensure sustainability and productivity.</p></div>","PeriodicalId":48539,"journal":{"name":"Egyptian Journal of Remote Sensing and Space Sciences","volume":"27 2","pages":"Pages 403-415"},"PeriodicalIF":6.4,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1110982324000358/pdfft?md5=645ad05ef4c47db5cd3b5f16608c16e6&pid=1-s2.0-S1110982324000358-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140647415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dark-object subtraction atmosphere correction for water body information extraction in Zhuhai-1 hyperspectral imagery","authors":"Yu Guo ,&nbsp;Ruru Deng ,&nbsp;Yan Yan ,&nbsp;Jiayi Li ,&nbsp;Zhenqun Hua ,&nbsp;Jing Wang ,&nbsp;Yuming Tang ,&nbsp;Bin Cao ,&nbsp;Yeheng Liang","doi":"10.1016/j.ejrs.2024.04.007","DOIUrl":"https://doi.org/10.1016/j.ejrs.2024.04.007","url":null,"abstract":"<div><p>The atmospheric correction of hyperspectral data stands as a fundamental step in quantitative applications, crucial for the accurate analysis of hyperspectral information. Zhuhai-1 hyperspectral data, characterized by its high spatial and spectral resolution, holds substantial potential and advantages for the quantification of water body information. Nonetheless, the adoption of more precise physical models for atmospheric correction often demands extensive satellite and ground environmental parameters, which pose practical challenges in applying physical models The Dark Object Subtraction (DOS), leveraging the intrinsic spectral characteristics of the imagery, offers an efficient alternative for achieving improved atmospheric correction results tailored to the data and study area. In this context, this study presents a Dark Object Subtraction for Water body information extraction (DOSW), specifically designed to advance the quantification of water body information in Zhuhai-1 hyperspectral data. The proposed method is rigorously evaluated by comparing the correction results from the Foshan region and Feilaixia Reservoir with standard and measured spectra of typical objects. The results demonstrate the accuracy of DOSW in atmospheric correction, with correlation coefficients exceeding 0.7 when compared to standard spectra for three representative objects. Notably, DOSW achieves exceptional accuracy in water body correction, achieving a correlation coefficient of 0.95 and an RMSE of 0.002 in the Feilaixia Reservoir, and a correlation coefficient of 0.72 and an RMSE of 0.005 in the Foshan region. Overall, the results underscore the efficacy of DOSW in accurately addressing atmospheric correction challenges to Zhuhai-1 hyperspectral data, effectively meeting the requirements of hyperspectral quantification applications.</p></div>","PeriodicalId":48539,"journal":{"name":"Egyptian Journal of Remote Sensing and Space Sciences","volume":"27 2","pages":"Pages 382-391"},"PeriodicalIF":6.4,"publicationDate":"2024-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1110982324000371/pdfft?md5=6bb2ca66868cdcff046c0bffce6a933a&pid=1-s2.0-S1110982324000371-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140645182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Estimation of Surface Ice Velocity of Durung Drung Glacier, Western Himalaya using COSI-Corr from Landsat images","authors":"Avtar Singh Jasrotia ,&nbsp;Suhail Ahmad ,&nbsp;Qamer Ridwan ,&nbsp;Zishan Ahmad Wani ,&nbsp;Sazada Siddiqui ,&nbsp;Ayesha Siddiqua ,&nbsp;Ekhlas Ali Morfeine aika","doi":"10.1016/j.ejrs.2024.04.006","DOIUrl":"https://doi.org/10.1016/j.ejrs.2024.04.006","url":null,"abstract":"<div><p>Glaciers all over the world have been experiencing recession at varying rates. Alterations in glacial retreat, volume, and mass have direct implications for sea level rise and have implications for the overall health of glaciers. Measuring the surface ice velocity of glaciers presents challenges due to the rugged terrain and harsh climate at high altitudes, making field observations difficult. This study aims to address these challenges by focusing on the calculation of the surface ice velocity of the Durung Drung glacier in Zanskar Valley, Ladakh. Landsat- 7 &amp; 8 panchromatic bands with a resolution of 15 m were used in conjunction with the COSI-Corr module of ENVI image processing software to derive surface ice velocity. The method involved the crosscorrelation of Landsat images from 1999/2000 and 2019/2020. The COSI-Corr module used in this study provided three key outputs: east–west displacement, north–south displacement, and signal-to-noise ratio. These outputs are essential for understanding the movement of the glacier and evaluating the quality of the image correlation. The results indicate that the surface velocity of Durung Drung glacier was 71 ± 6.1 m yr⁻¹ in 1999/2000, which increased (by ∼ 50 %) to 140 ± 7.4 m yr⁻¹ in 2019/2020. An increasing trend in velocity manifests the rising trend in temperature in the western Himalaya. Analysis of CRU TS4 gridded data reveals an increase in temperature while precipitation decreased during 1976–2020. The study recommends that the annual variations in surface ice velocity are a consequence of temperature fluctuations that influence the availability of meltwater.</p></div>","PeriodicalId":48539,"journal":{"name":"Egyptian Journal of Remote Sensing and Space Sciences","volume":"27 2","pages":"Pages 369-381"},"PeriodicalIF":6.4,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S111098232400036X/pdfft?md5=4cd665fa472c0ac74aa851f8f0fa7b25&pid=1-s2.0-S111098232400036X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140641321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Implementation of a UAV-aided calibration method for a mobile dual-polarization weather radar","authors":"Giorgio Buckingham ,&nbsp;Mario De La Cruz ,&nbsp;Danny Scipion ,&nbsp;Juan C. Espinoza ,&nbsp;Joab Apaza ,&nbsp;Guillermo Kemper","doi":"10.1016/j.ejrs.2024.04.005","DOIUrl":"https://doi.org/10.1016/j.ejrs.2024.04.005","url":null,"abstract":"<div><p>Weather radar calibration is a crucial factor to be considered for quantitative applications, such as QPE (Quantitative Precipitation Estimation), which is used as input for weather risks management. The present work proposes a novel approach to the end-to-end radar calibration method through the characterization of the radar weighting functions. These are Gaussian functions that model an additional attenuation factor to the radar received power. This approach, based on the inclusion these parameters, allow the obtainment of a calibrated equivalent reflectivity factor expression for a Doppler dual-polarization weather radar that operates in the X band. To calculate these parameters, a UAS (Unmanned Aircraft System) was implemented for suspending the calibration target with a well-defined cross-section and for measuring its inclination due to wind using an IMU (Inertial Measurement Unit). From its measurements, the position of the target can be estimated, which is essential to the characterization of the weighting functions. Their inclusion within the radar equation, alongside the implementation of the angular measurement system highlight the innovation to the traditional radar calibration methodology that does not contemplate them from the explored state-of-the-art. The reflectivity was compared with the measurements from a disdrometer for a moderate rain event. An average reflectivity difference of 0.75 dBZ and a percent bias of 3.3 % were obtained between the expected and estimated measurements when including these functions compared to the 1.51 dBZ and –62.7 % obtained when disregarding them. These experimental results point out that the proposed method can deliver superior accuracy in the reflectivity estimation.</p></div>","PeriodicalId":48539,"journal":{"name":"Egyptian Journal of Remote Sensing and Space Sciences","volume":"27 2","pages":"Pages 356-368"},"PeriodicalIF":6.4,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1110982324000346/pdfft?md5=965c4c8ec5e838cd17d2270face0a0c1&pid=1-s2.0-S1110982324000346-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140638148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring the potentiality of InSAR data to estimate land subsidence of the Nile Delta","authors":"Islam Abou El-Magd ,&nbsp;Mohamed Zakzouk ,&nbsp;Elham M Ali ,&nbsp;Michael Foumelis ,&nbsp;Jose Manuel Delgado Blasco","doi":"10.1016/j.ejrs.2024.03.009","DOIUrl":"https://doi.org/10.1016/j.ejrs.2024.03.009","url":null,"abstract":"<div><p>Nile Delta has been historically targeted for various types of human activities since the Pharaohs’ era due to abundance of its natural resources. The increasing land subsidence in the northern delta is a significant concern for the Egyptian government. Moreover, the cumulative subsidence coupled with the scenarios of sea level rise worsens the situation. In the present work, we utilize SNAPPING service on the Geohazards Exploitation Platform (GEP) to measure the spatial and temporal trends, as well as the extent of subsidence in urban areas within the Nile Delta. The study analyzed the period between 2015 and 2020 using 225 Copernicus Sentinel-1 radar imagery using the Persistent Scatterers Interferometry (PSI) technique and reported surface motion with an average of −5 mm/year in the Nile Delta surface. Subsidence is relatively higher in the eastern part with more patterns specific to particular regions. The northern part recorded subsidence ranged from 0 to 7 mm/year. High rates of subsidence up to 17 mm/year localized in locations of Port Said, Damietta, Ad Dakahlia and Al Sharkia governorates and around Manzala Lake. On the other side, medium uplift rates up to 6 mm/year concentrated around Bardaweel Lake, Parts of Ismailia governorate and Baltim city. On-site visual inspections in these areas documented tilting in buildings and clear cracks which confirm the impact of land subsidence on the structural integrity of the buildings. The GEP platform and the SNAPPING service demonstrated the capability of cloud-based solutions to provide precise surface motion information within a short time.</p></div>","PeriodicalId":48539,"journal":{"name":"Egyptian Journal of Remote Sensing and Space Sciences","volume":"27 2","pages":"Pages 342-355"},"PeriodicalIF":6.4,"publicationDate":"2024-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1110982324000310/pdfft?md5=7418188af351eb45cb92d768d6810155&pid=1-s2.0-S1110982324000310-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140621123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}