International Journal of Environment and Geoinformatics最新文献_第2页

The Investigation of Tropospheric Changes with GNSS: A study on 6 February 2023 Kahramanmaraş Earthquake Sequence 利用全球导航卫星系统调查对流层变化：对 2023 年 2 月 6 日卡赫拉曼马拉什地震序列的研究

International Journal of Environment and Geoinformatics Pub Date : 2024-03-06 DOI: 10.30897/ijegeo.1441082

Seda Özarpacı

{"title":"The Investigation of Tropospheric Changes with GNSS: A study on 6 February 2023 Kahramanmaraş Earthquake Sequence","authors":"Seda Özarpacı","doi":"10.30897/ijegeo.1441082","DOIUrl":"https://doi.org/10.30897/ijegeo.1441082","url":null,"abstract":"The earthquakes that occurred in Kahramanmaraş on February 6, 2023, are among the significant seismic events in Turkey. Recorded at moment magnitudes of 7.8 and 7.6 in ten hours on East Anatolian Fault Zone (EAFZ), these earthquakes resulted in extensive destruction and loss of lives in the region. The effects of these earthquakes have been actively studied following the events, utilizing geodetic measurement techniques, particularly GNSS measurements, which are commonly employed in earthquake studies for determining tectonic movements and crustal deformations. As known, GNSS signals pass through significant atmospheric layers, namely the ionosphere and troposphere, before reaching the Earth's surface, and the influence of these atmospheric layers is evident in the results due to various error sources within these layers. One of the main limiting factors in studies such as determining crustal movements is the influence of the troposphere, as surface velocities are on the order of a few mm/yr and require high accuracy (at the mm level). In this study, changes in the troposphere during the earthquakes on February 6, 2023, were investigated using tropospheric zenith delays (Zenith Total Delay - ZTD) computed from GNSS observations. The results indicate the presence of zenith tropospheric delay anomalies at stations close to the fault rupture during and after the main shock, while no such anomalies were observed at distant stations from the fault rupture zone. This finding indicates a relationship between earthquakes and changes occurring in the troposphere.","PeriodicalId":176110,"journal":{"name":"International Journal of Environment and Geoinformatics","volume":"9 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140261181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pre-study of the evaluation of ecological sessile succession and their relationship with bacteria on concrete artificial reef material 混凝土人工鱼礁材料上生态无梗演替及其与细菌关系的评估预研究

International Journal of Environment and Geoinformatics Pub Date : 2024-03-06 DOI: 10.30897/ijegeo.1435748

B. Gül, Tuba Unsal

引用次数: 0

An Approach to Green Ports in Terms of Low-Carbon Energy and Sustainability 从低碳能源和可持续性角度看绿色港口的方法

International Journal of Environment and Geoinformatics Pub Date : 2024-03-06 DOI: 10.30897/ijegeo.1416523

Ömer Berkehan İnal, C. Dere

引用次数: 0

DETERMINATION OF BLACK SEA COASTLINE LENGTH WITH OBLIQUE STEREOGRAPHIC PROJECTION USING AFFINE TRANSFORMATION 利用仿射变换，通过斜立体投影确定黑海海岸线长度

International Journal of Environment and Geoinformatics Pub Date : 2023-12-24 DOI: 10.30897/ijegeo.1399910

Saziye Ozge Atik

{"title":"DETERMINATION OF BLACK SEA COASTLINE LENGTH WITH OBLIQUE STEREOGRAPHIC PROJECTION USING AFFINE TRANSFORMATION","authors":"Saziye Ozge Atik","doi":"10.30897/ijegeo.1399910","DOIUrl":"https://doi.org/10.30897/ijegeo.1399910","url":null,"abstract":"The Black Sea basin has rich oil and natural gas resources. As a result, determining the continental shelf in international relations and maritime law is a critical issue for countries with a shoreline on the Black Sea, which is a semi-enclosed sea. Global projections are generally used for the projection of satellites used to image the earth. The use of global projections causes increased deformation in applications in local areas. For this reason, the deformation of satellite images used as a base can be reduced by converting them to the appropriate projection. In this study, the coastline lengths of the countries neighboring the Black Sea were calculated by using remote sensing images and selecting the appropriate cartographic projection due to the aim of minimum map deformation. By using different numbers of control points to determine the six parameters of the 2D Affine transformation used for coordinate transformation, the change in the accuracy of the transformation depending on the number of control points was examined. The Black Sea coastline, which was digitized in the local coordinate system via the MODIS satellite image, was transformed into coordinates in the oblique stereographic projection system with 2D affine transformation. 11 test points were used in the affine transformation parameters calculated using different control points, and root mean square error (RMSE) of approximately 6 km on the X axis and approximately 10 km on the Y axis was achieved using 25 control points. As a result of the transformation, the coastline lengths of each country bordering the Black Sea were determined in oblique stereographic projection.","PeriodicalId":176110,"journal":{"name":"International Journal of Environment and Geoinformatics","volume":"2015 28","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139159893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spatial Mapping of Polling Units using Open-Source Software 利用开源软件绘制投票站空间分布图

International Journal of Environment and Geoinformatics Pub Date : 2023-12-23 DOI: 10.30897/ijegeo.1306318

A. Ekpa, Itoro Udoh, Ini Eyoefen

{"title":"Spatial Mapping of Polling Units using Open-Source Software","authors":"A. Ekpa, Itoro Udoh, Ini Eyoefen","doi":"10.30897/ijegeo.1306318","DOIUrl":"https://doi.org/10.30897/ijegeo.1306318","url":null,"abstract":"The feasibility for adopting emerging Open-Source software and free mobile GIS data collection tools for Polling Unit mapping (PUs) and inventory was tested. The dynamism of KOBO COLLECT and QGIS Open-Source technologies were used in mapping and analyzing the spatial distribution of polling units in Eket Local Government Area. The study maximized the potentials of Open-Source technologies to provide a graphical inventory of polling units and area coverage for information management in the electioneering process. Spatial analysis tool of QGIS was used for solving shortest path problem centered around emergency response routing scenarios based on travel time and distance impedance from an origin to a destination. It also helped to portray the distribution within the study area in a bid to reveal pattern and accessibility to the populace. Results obtained will allow citizens and electorates access information on the locations of various polling units, which ultimately serve as a decision supporting system that would enhance their participation. The maps are also useful for future distribution of polling booths, security personnel, for solving transportation issues and in service delivery during election periods.","PeriodicalId":176110,"journal":{"name":"International Journal of Environment and Geoinformatics","volume":"54 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139162283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance Analysis of a Drone Development Kit-derived Digital Elevation Model 无人机开发套件衍生数字高程模型的性能分析

International Journal of Environment and Geoinformatics Pub Date : 2023-12-02 DOI: 10.30897/ijegeo.1344526

Mehmet Doğruluk, İlyas Yalçin

{"title":"Performance Analysis of a Drone Development Kit-derived Digital Elevation Model","authors":"Mehmet Doğruluk, İlyas Yalçin","doi":"10.30897/ijegeo.1344526","DOIUrl":"https://doi.org/10.30897/ijegeo.1344526","url":null,"abstract":"Surface modeling constitutes is a crucial aspect in numerous engineering inquiries and earth observation endeavors. In contemporary times, the acquisition of geospatial data essential for the digital representation of local regions is increasingly facilitated through drone-based methodologies, supplanting conventional terrestrial data gathering techniques. The market presently hosts a plethora of cost-effective, \"ready-to-fly\" unmanned aerial vehicles (UAVs), offering users the capability to generate photogrammetric outputs, including high geometric precision Digital Elevation Models (DEMs). Moreover, modularly structured drone development kits, designed for multifarious applications, are readily accessible for purchase. These drone kits offer an economically advantageous platform that users can customize to suit their specific needs. Nevertheless, the geometric precision of DEMs created using these kits hinges upon the capabilities of the imaging and navigation systems, in addition to the stabilization of the platform during autonomous flight. In this study, using a drone development kit and a commercial drone, simultaneous image acquisition was performed for the same study area and two different DEMs were produced. The efficacy of the DEM generated using the drone development kit was assessed through a comparative analysis with the DEM obtained from a commercial drone. In addition, geometric accuracy assessment was conducted for both DEMs using ground control points. The findings reveal the usability of drone development kits in precision DEM production, as well as their limitations.","PeriodicalId":176110,"journal":{"name":"International Journal of Environment and Geoinformatics","volume":"64 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138606399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

FLOOD IMPACT ASSESSMENT IN KOTON KARFE USING SENTINEL-1 SYNTHETIC APERTURE RADAR (SAR) DATA 利用哨兵-1 号合成孔径雷达（SAR）数据评估 KOTON KARFE 的洪水影响

International Journal of Environment and Geoinformatics Pub Date : 2023-12-01 DOI: 10.30897/ijegeo.1348753

I. Isi̇aka, S. A. Ajadi̇, Sodiq Ayobami Arowolo, Suebat Oluwakemi Mustapha, Kingsley Ndukwe, Christian Chibuike Oluoma

{"title":"FLOOD IMPACT ASSESSMENT IN KOTON KARFE USING SENTINEL-1 SYNTHETIC APERTURE RADAR (SAR) DATA","authors":"I. Isi̇aka, S. A. Ajadi̇, Sodiq Ayobami Arowolo, Suebat Oluwakemi Mustapha, Kingsley Ndukwe, Christian Chibuike Oluoma","doi":"10.30897/ijegeo.1348753","DOIUrl":"https://doi.org/10.30897/ijegeo.1348753","url":null,"abstract":"Flood has proven to be an incessant menace in Nigeria more threatening to riverine areas. The most recent flood ensued in 2022 as a result of heavy rainfall and the release of water from Lagdo Dam in Cameroon which became very devastating in many areas notably the Koton Karfe area in Kogi State, causing business shutdowns and the loss of lives and properties. In this work, Sentinel-1 Synthetic Aperture Radar (SAR) imagery was used for flood inundation mapping, and the accompanying damages were investigated using Landsat derived Land cover maps of Koton Karfe during the 2022 devastating flood. Overall, the results obtained in this study show that the regions that felt the impact of the flood the most were the southern and western areas, which must have experienced such an impact due to their proximity to the rivers Niger and Benue and also the water coming from the upper stream part of Cameroon. Further findings revealed that during the flood period on October 13, 2022, the total inundated area in Koton Karfe was estimated to be 198.255 sq. km. In terms of damage assessment, the urban areas had reduced from 220.902 sq. km in May 2022 to 87.473 sq. km in November 2022. This shows that over 133 sq. km of the urban settlement have been lost, indicating that lives must have been lost, properties too, and humans must have been displaced. This research will assist in the space of flood emergency response and disaster management.","PeriodicalId":176110,"journal":{"name":"International Journal of Environment and Geoinformatics","volume":" 25","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138619498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Coastal upwellings in the Sea of Marmara 马尔马拉海的海岸隆起

International Journal of Environment and Geoinformatics Pub Date : 2023-11-27 DOI: 10.30897/ijegeo.1338236

S. Mutlu, E. Kuzyaka, H. Atabay, Abdulkadir Topal

引用次数: 0

Does Sea Level Change in The Strait of Istanbul, Türkiye? 土耳其伊斯坦布尔海峡的海平面是否变化？

International Journal of Environment and Geoinformatics Pub Date : 2023-11-27 DOI: 10.30897/ijegeo.1395466

Saffet Alti̇ndag, Dilek Eren Akyüz

{"title":"Does Sea Level Change in The Strait of Istanbul, Türkiye?","authors":"Saffet Alti̇ndag, Dilek Eren Akyüz","doi":"10.30897/ijegeo.1395466","DOIUrl":"https://doi.org/10.30897/ijegeo.1395466","url":null,"abstract":"Bosphorus is a narrow water passage connecting the Marmara Sea and the Black Sea through a sea level balance current flow. In this study, change points in mean and in variance and trend analysis are performed to reveal whether sea level is changing or not. Moreover, the simple linear regression is calculated to explain the relationships among sea level data in the three stations located in the Black Sea, the Marmara Sea and Bosphorus. The Turkish National Sea Level Monitoring System (TUDES) measures sea water level at each 15-minute periods in three stations in order to minimize the effect of turbulence. The sea level in the coastal area of Istanbul city is most populous region with its highly economic importance. The most important reason for this is the serious decrease in the amount of water discharged into the Black Sea due to dams and excessive water usage. The three sea level stations have no change points on the average of the whole data. The change points in variance are depicted especially in gap data years and especially around year 2018. While the difference in the sea level of the Istanbul and Sile stations contain seasonality, the difference between the other stations has a sinusoidal component. While this study lights on understanding the sea level characteristics of the Bosphorus, it also emphasizes the importance of accuracy, completeness and long-term measurement data requirement.","PeriodicalId":176110,"journal":{"name":"International Journal of Environment and Geoinformatics","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139231356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of Spatio-Temporal changes of Forest Cover using Remote Sensing techniques in Pavagadh Region, Gujarat State 利用遥感技术评估古吉拉特邦 Pavagadh 地区森林覆盖的时空变化

International Journal of Environment and Geoinformatics Pub Date : 2023-11-25 DOI: 10.30897/ijegeo.1344777

Foram Jadeja, Kauresh Vachhrajani̇, Manik H. KALUBARME

{"title":"Assessment of Spatio-Temporal changes of Forest Cover using Remote Sensing techniques in Pavagadh Region, Gujarat State","authors":"Foram Jadeja, Kauresh Vachhrajani̇, Manik H. KALUBARME","doi":"10.30897/ijegeo.1344777","DOIUrl":"https://doi.org/10.30897/ijegeo.1344777","url":null,"abstract":"For effective forest management, it is essential to consider forest patterns and periodic changes in forest cover. Several spectral vegetation indices derived from multi-temporal Remote Sensing data are useful to track the changes over time. The major objective of this study was to monitor the changes in forest cover during the past three decades in the Pavagadh area of Panchmahal district, Gujarat State, India. Various indices like Normalized Difference Vegetation Index (NDVI), Land Surface Temperature, and Urban Thermal Field Variance Index (UTFVI) with the Ecological Evaluation Index were analyzed for assessment of Spatio-temporal changes in the forest cover. Multi-temporal Landsat-TM and OLI sensor data for the years 1991, 2001, 2011, and 2021 were utilized covering the study area. The results indicated that the total forest cover area has gradually increased from 1991 to 2021 and the total forest area has doubled during this period of 30 years. The comparative study of NDVI and Land Surface Temperature map brings out a significant fact that in the areas where moderate and dense forest cover is present, the Land Surface Temperature was lower as compared to areas with poor vegetation cover. This indicates that there is an inverse relationship between forest cover distribution and Land Surface Temperature. However, the Ecological evaluation index shows that the forest vegetation quality is gradually improving to normal conditions with the excellent category and UTFVI value (< 0) in reference to the year 1991.","PeriodicalId":176110,"journal":{"name":"International Journal of Environment and Geoinformatics","volume":"55 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139237653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0