All Earth最新文献_第2页

Land use land cover (LULC) degradation intensity analysis of Guinea savannah and Mosaic Forest savannah zones in Ghana 加纳几内亚草原和马赛克森林草原带土地利用土地覆盖退化强度分析

All Earth Pub Date : 2023-09-04 DOI: 10.1080/27669645.2023.2255443

Kueshi Sémanou Dahan, R. Kasei, R. Husseini

{"title":"Land use land cover (LULC) degradation intensity analysis of Guinea savannah and Mosaic Forest savannah zones in Ghana","authors":"Kueshi Sémanou Dahan, R. Kasei, R. Husseini","doi":"10.1080/27669645.2023.2255443","DOIUrl":"https://doi.org/10.1080/27669645.2023.2255443","url":null,"abstract":"ABSTRACT Ghana is increasingly affected by climate change, increased soil aridity, demographic problems, and unfavourable environmental factors. In the context of conservation, protection and sustainable management, this study assessed the loss, gain and stable areas of vegetation cover in Ghana by considering four districts namely West Gonja and West Mamprusi; Sene and Afram Plains in two major ecological zones respectively (Guinea-savannah and Forest-savannah mosaic) to make a comparative study of their level and intensity of degradation. For this purpose, remote sensing (IMPACT toolbox), GIS and quantitative analysis (PontiusMatrix42) approaches were used and applied on Landsat ETM+, OLI TIRS and Sentinel 2B images (2001, 2011, 2021). The result shows that land uses land covers (LULCs) are changing with a high level of dynamism in both ecological zones, with particular mention over the last decade (2011–2021) in terms of degradation in the Guinean savannah zone. Losses in both zones are more considerable than gains and stability. Each zone is marked more by changes in quantity than exchanges and shifts in LULCs, thus giving us information on the rate of loss of forest resources. It is therefore essential to put in place adequate measures to fight this irreversible loss if no action is taken.","PeriodicalId":238835,"journal":{"name":"All Earth","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116936904","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

Urban Carbon Stock Estimation Based on Deep Learning and UAV Remote Sensing: A Case Study in Southern China 基于深度学习和无人机遥感的城市碳储量估算——以中国南方地区为例

All Earth Pub Date : 2023-08-23 DOI: 10.1080/27669645.2023.2249645

Zijian Wu, M. Jiang, Huaizhong Li, Yang Shen, Junfeng Song, X. Zhong, Zhen Ye

{"title":"Urban Carbon Stock Estimation Based on Deep Learning and UAV Remote Sensing: A Case Study in Southern China","authors":"Zijian Wu, M. Jiang, Huaizhong Li, Yang Shen, Junfeng Song, X. Zhong, Zhen Ye","doi":"10.1080/27669645.2023.2249645","DOIUrl":"https://doi.org/10.1080/27669645.2023.2249645","url":null,"abstract":"ABSTRACT Accurate carbon (C) stock estimation is crucial for C sequestration research, environmental protection, and policy formulation related to C management. Although research on C stock in forests, oceans, soil, and desert has received increasing attention, relatively few studies have focused on urban C stock. Moreover, the current mainstream methods for C stock assessment, including field surveys and satellite mapping, are characterised by notable limitations, including being labour-intensive and having limited real-time data acquisition capabilities. Therefore, this paper aims to assess urban C stock and proposes a novel two-stage estimation model based on deep learning and unmanned aerial vehicle (UAV) remote sensing. The first stage is that tree areas recognition via YOLOv5 and achieved 0.792 precision, 0.814 recall, and 0.805 mAP scores, respectively. In the second stage, a grid generation strategy and a Convolutional Neural Network (CNN) regression model were developed to estimate C stock based on recognised tree areas (R2 = 0.711, RMSE = 26.08 kg). Three regions with a minimum of 300 trees in each area were selected as validation sets. The experimental results, in terms of R2 and RMSE in kg, were (0.717, 0.711, 0.686) and (27.263, 27.857, 28.945), respectively.","PeriodicalId":238835,"journal":{"name":"All Earth","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124819682","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

Urban subsidence in Rapid Economic Development: The Case of Luoyang city, Henan Province 经济快速发展中的城市沉降——以河南省洛阳市为例

All Earth Pub Date : 2023-08-22 DOI: 10.1080/27669645.2023.2249666

Yizhan Zhao, Lv Zhou, Heng Luo, Yan Li, Xin-Yi Li, Yuanjin Pan, Youju Huang

{"title":"Urban subsidence in Rapid Economic Development: The Case of Luoyang city, Henan Province","authors":"Yizhan Zhao, Lv Zhou, Heng Luo, Yan Li, Xin-Yi Li, Yuanjin Pan, Youju Huang","doi":"10.1080/27669645.2023.2249666","DOIUrl":"https://doi.org/10.1080/27669645.2023.2249666","url":null,"abstract":"ABSTRACT Rapid urban development has led to severe land subsidence in Luoyang, Henan Province in the past few years. The current research on subsidence in urban areas of Luoyang is relatively few and early, and cannot reflect the current status of land subsidence in Luoyang. To grasp the current status of land subsidence in Luoyang and prevent the harm caused by subsidence. We used 57 Sentinel-1A Synthetic Aperture Radar (SAR) images covering Luoyang to obtain the land subsidence from April 2017 to December 2021 by using the small baseline subset interferometric SAR technique. The results show that there are several areas of land subsidence in Luoyang City, and the most serious area of subsidence is located near the highway in Jianxi District, with a cumulative subsidence of 130 mm. Land subsidence exists to varying degrees near transportation facilities (Expressway roads, railway, metro), key urban facilities (airports, high-speed railway stations) and ancient sites in Luoyang. A number of small-scale local subsidence in Luoyang is mainly related to high-intensity urban construction, and urban highway and building construction are the main causes of local land subsidence. Industrial activities are also an important factor in land subsidence in Luoyang. Groundwater and rainfall can impact land subsidence, and large amounts of rainfall during the flood season can replenish groundwater resources and slow down the rate of land subsidence. Loess foundations and large amounts of artificial fill in the city may also induce land subsidence.","PeriodicalId":238835,"journal":{"name":"All Earth","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122478676","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 Correlation of the maximum Shear Strain Loading Rate and the Correlation Dimension along the Sumatra subduction margin for potential earthquake and Tsunami hazard study and Analysis 苏门答腊岛俯冲边缘最大剪切应变加载率及相关维数的空间相关性对地震海啸潜在危害的研究与分析

All Earth Pub Date : 2023-08-18 DOI: 10.1080/27669645.2023.2249669

Wahyu Triyoso, W. Kongko, G. Prasetya, D. Sarsito

{"title":"Spatial Correlation of the maximum Shear Strain Loading Rate and the Correlation Dimension along the Sumatra subduction margin for potential earthquake and Tsunami hazard study and Analysis","authors":"Wahyu Triyoso, W. Kongko, G. Prasetya, D. Sarsito","doi":"10.1080/27669645.2023.2249669","DOIUrl":"https://doi.org/10.1080/27669645.2023.2249669","url":null,"abstract":"ABSTRACT The potential earthquake and tsunami hazard along the Sumatra subduction margin, especially around the coast of West Sumatra-Bengkulu, was investigated based on the availability of pre-seismic surface displacement data and shallow crustal earthquake catalogue data from 1907 to 2016. The pre-seismic surface displacement data is based on the displacement data prior to and corrected displacement data after major earthquakes. Using the results of our previous study on the local covariance function and the relationship of Correlation Dimension (DC) with the b-value of Gutenberg-Richter (GR) Law, we estimated the maximum horizontal crustal strain rate (SHmax) and DC around the study area. Least squares prediction based on horizontal displacement data using the local covariance function is used to estimate the displacement model in the entire gridding study area with a 10 km × 10 km size. Furthermore, DC is calculated based on the b-value using the maximum likelihood method based on the input of a constant number of earthquake samples, assuming the regional b-value of GR Law equals 1. Furthermore, the spatial correlation of SHmax and DC can define the area of possible earthquake hazard potential. The identification results are then linked with previous stress reconstruction results for seismic hazard study and analysis. Based on the finding, we then estimate the Seismic Hazard Function (SHF) and Tsunami Height simulation to estimate the possible hazard risk at several observation points. We suggest that the result of this study could be beneficial to understand better the potential seismic and tsunami hazard in the future, mainly to support mitigation purposes.","PeriodicalId":238835,"journal":{"name":"All Earth","volume":"131 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124293989","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

Setting priorities for public–private collaborations in tourism disaster management planning 确定旅游灾害管理规划中公私合作的优先事项

All Earth Pub Date : 2023-08-04 DOI: 10.1080/27669645.2023.2241212

D. Kausar, A. Agustan, S. Imran, D. Rosmalia, R. Firmansyah

{"title":"Setting priorities for public–private collaborations in tourism disaster management planning","authors":"D. Kausar, A. Agustan, S. Imran, D. Rosmalia, R. Firmansyah","doi":"10.1080/27669645.2023.2241212","DOIUrl":"https://doi.org/10.1080/27669645.2023.2241212","url":null,"abstract":"ABSTRACT This study aims to explore the relationships between public and private sectors in tourism disaster management and assess the criteria for the realisation of public and private collaborations in tourism disaster management in terms of their priorities. This research, conducted in two regions in Indonesia, employed in-depth interviews, focus group discussions and an Analytical Hierarchy Process (AHP) survey participated by representatives of relevant government agencies and tourism industry associations. Findings show that each stakeholder plays bigger roles compared to others in the different phase of tourism disaster management. The study also identifies six possible criteria for public–private collaborations in tourism disaster management, namely the formation of special organisation for crisis management, certification for disaster preparedness, the availability of guidelines for disaster management, regulation for critical facilities in disaster management, tourism planning considering disaster risk awareness and tourism industry associations’ enhanced role in improving disaster risk awareness. Through AHP surveys involving experts, it is found that there is a different level of disaster preparedness between regions and different priorities chosen by their stakeholders. Higher level of disaster preparedness and a more practical implementation of disaster management in Bali is likely due to the influence of international market demand.","PeriodicalId":238835,"journal":{"name":"All Earth","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130466437","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

Metal source and the origin of the Darıderesi Pb-Zn (Ag) veins in the Balya Mining District, NW Türkiye: Constraints from ore mineral chemistry, fluid inclusions and S-Pb isotopic signatures 西北地区巴利亚矿区Darıderesi铅锌(银)脉的金属来源与成因:矿石矿物化学、流体包裹体和S-Pb同位素特征的制约

All Earth Pub Date : 2023-07-25 DOI: 10.1080/27669645.2023.2241217

T. Oyman, Sercan Bozan, Mustafa Çiçek, M. Chiaradia, İ. Kuşçu

{"title":"Metal source and the origin of the Darıderesi Pb-Zn (Ag) veins in the Balya Mining District, NW Türkiye: Constraints from ore mineral chemistry, fluid inclusions and S-Pb isotopic signatures","authors":"T. Oyman, Sercan Bozan, Mustafa Çiçek, M. Chiaradia, İ. Kuşçu","doi":"10.1080/27669645.2023.2241217","DOIUrl":"https://doi.org/10.1080/27669645.2023.2241217","url":null,"abstract":"ABSTRACT The Darıderesi mineralisation was recently discovered in the Balya district, which hosts Pb-Zn (Ag) deposits including Arı Mağara-Balya Main and Hastanetepe-Balya North. Darıderesi is a structurally controlled hydrothermal and associated replacement mineralisation hosted in the shale-mudstone and carbonaceous horizons within the Karakaya Complex. The mineralisation was formed in three main stages as pre-ore calc-silicate alteration, main ore, and supergene alteration. The substages of the sulphide-sulphosalt mineralisation can be summarised as: pyrite-arsenopyrite galena, sphalerite, ferrokesterite, chalcopyrite, fahlore group and geocronite-jordanite solid solution series members, xanthoconite, pyrargyrite and goldfieldite. Fluid inclusion studies indicate that both boiling and fluid mixing were the most effective processes causing the precipitation of sulphides and sulphosalts. Along its pathway, fluid–rock interaction coupled with decreasing temperature evolved the fluid to a lower sulphur and oxygen fugacity and nearly neutral to weakly alkali state which promoted the precipitation of base metal and the following silver-bearing sulphides and sulphosalts. The lead isotope composition of sulphides implies that lead was essentially derived from Oligo-Miocene magmatic rocks in the region with some interaction with basement rocks. The similarity of the lead and sulphur isotopic compositions between Darıderesi and Balya deposits suggests that they may relate to the same magmatic source.","PeriodicalId":238835,"journal":{"name":"All Earth","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116902895","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: 1

Earthquake-triggered landslides and Environmental Seismic Intensity: insights from the 2018 Papua New Guinea earthquake (Mw 7.5) 地震引发的山体滑坡和环境地震强度:来自2018年巴布亚新几内亚地震(Mw 7.5)的见解

All Earth Pub Date : 2023-07-05 DOI: 10.1080/27669645.2023.2233140

A. Sridharan, M. Ferrario, S. Gopalan

{"title":"Earthquake-triggered landslides and Environmental Seismic Intensity: insights from the 2018 Papua New Guinea earthquake (Mw 7.5)","authors":"A. Sridharan, M. Ferrario, S. Gopalan","doi":"10.1080/27669645.2023.2233140","DOIUrl":"https://doi.org/10.1080/27669645.2023.2233140","url":null,"abstract":"ABSTRACT On the 25 February 2018, an earthquake of magnitude Mw7.5 struck the region of Porgera in Papua New Guinea (PNG), triggering numerous landslides. Planetscope images are used to derive a partial inventory of 2941 landslides in a cloud-free area of 2686 km2. The average area of landslides in the study area is 18,500 m2. We use the Environmental Seismic Intensity (ESI) scale to assess the damage due to the triggered landslides. Local intensity values are assigned to individual landslides by calculating their volume using various area–volume relations. We observe that different empirical relations yield similar volume values for individual landslides (local ESI intensity ≥ X). The spatial variation of landslide density and areal coverage within the study area in cells of 1 km2 is investigated and compared to the probability predicted by the USGS model. We observe that high probability corresponds to a significant number of landslides. An ESI epicentral intensity of XI is estimated based on primary and secondary effects. This study represents the first application of the ESI scale to an earthquake in PNG. The Porgera earthquake fits well with past case studies worldwide in terms of ESI scale epicentral intensity and triggered landslide number as a function of earthquake magnitude.","PeriodicalId":238835,"journal":{"name":"All Earth","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123599368","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: 1

The first sexaxial figure of the Earth 地球的第一个六轴图形

All Earth Pub Date : 2023-06-23 DOI: 10.1080/27669645.2023.2227483

H. Iz

引用次数: 1

The global change and response special project: using remote sensing data to monitor and invert key components in the cryosphere 全球变化和响应特别项目:利用遥感数据监测和反演冰冻圈的关键成分

All Earth Pub Date : 2023-06-23 DOI: 10.1080/27669645.2023.2227488

A. Zhao, L. An, Yinsheng Zhang, Hansheng Wang, Fei Li, T. Feng, T. Hao, W. Hao, Yan He, Liming Jiang, Ping Lu, Xianglian Meng, Xiaolei Niu, G. Qiao, Xiaochun Ren, Q. Shen, Yunzhong Shen, Yixiang Tian, Yongjie Wang, Bin Xiao, Huan Xie, Shengkai Zhang, Fujun Zhou, Shiqiao Zhou, Rongxing Li

{"title":"The global change and response special project: using remote sensing data to monitor and invert key components in the cryosphere","authors":"A. Zhao, L. An, Yinsheng Zhang, Hansheng Wang, Fei Li, T. Feng, T. Hao, W. Hao, Yan He, Liming Jiang, Ping Lu, Xianglian Meng, Xiaolei Niu, G. Qiao, Xiaochun Ren, Q. Shen, Yunzhong Shen, Yixiang Tian, Yongjie Wang, Bin Xiao, Huan Xie, Shengkai Zhang, Fujun Zhou, Shiqiao Zhou, Rongxing Li","doi":"10.1080/27669645.2023.2227488","DOIUrl":"https://doi.org/10.1080/27669645.2023.2227488","url":null,"abstract":"ABSTRACT It is critical to understand the mechanisms and impacts of global climate change in cryosphere and polar environment. Here we describe the design and progress of the remote sensing products we have developed to monitor these changes. We obtain datasets by combining multi-sensor remote sensing systems with field validation systems, and then develop a methodological system that combines multiple sources and calibration technologies to address the challenges of data heterogeneity in dynamically monitoring key parameters. This global change and response special project supported by the National Key Research and Development Program of China, named ‘observation and inversion of critical parameters of changes in the cryosphere and polar environment’, providing comprehensive records of essential elements of the cryosphere through long-term satellite records. The multi-team is completing the project and collecting data from multi-sensor to create remote sensing data products that include records of changes in the cryosphere, such as permafrost, glaciers, ice sheet mass balance, seasonal snow accumulation, sea ice, and albedo changes. Finally, the existing ground- and space-based observing system can be improved to provide dynamic monitoring of key parameters in the cryosphere and changes in the polar environment.","PeriodicalId":238835,"journal":{"name":"All Earth","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133862787","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

A Novel GNSS Precise Point Positioning Method Based on Spherical Harmonic Expansion 一种基于球面谐波展开的GNSS精确点定位方法

All Earth Pub Date : 2023-05-03 DOI: 10.1080/27669645.2023.2210356

Yanchen Cao, Jinyun Guo, Hengyang Guo, Minghao Chang, Chunmei Zhao, Xin Liu

{"title":"A Novel GNSS Precise Point Positioning Method Based on Spherical Harmonic Expansion","authors":"Yanchen Cao, Jinyun Guo, Hengyang Guo, Minghao Chang, Chunmei Zhao, Xin Liu","doi":"10.1080/27669645.2023.2210356","DOIUrl":"https://doi.org/10.1080/27669645.2023.2210356","url":null,"abstract":"ABSTRACT The Global Navigation Satellite System (GNSS) precise point positioning (PPP) from carrier-phase data is influenced by complex elements. The error sources are divided into two categories according to their relation to the signal propagation path. A new GNSS PPP algorithm based on spherical harmonic expansion (PPP-SH) is proposed, which expresses the error adjustments related to the signal propagation path through the spherical harmonic expansion, such as high-order ionosphere delay, zenith wet delay, phase wind-up delay, multipath delay and so on. Carrier-phase data of multiple continuous epochs are used to achieve the sequential sliding PPP solution, and the truncated singular value decomposition and iteration method by correcting characteristic values are used to solve the ill-conditioned equations in the PPP-SH algorithm. The reliable results can be obtained by using dual-frequency ionospheric-free carrier phase data when spherical harmonic expanding to degree 5. The standard deviations of E, N and U are 0.48, 0.43 and 0.27 cm, respectively. The addition of velocity parameters has positive influence on accuracy of positioning. The best positioning results are obtained by using the precise ephemeris and precise clock bias provided by ESA and the standard deviations of E, N and U are 0.41, 0.43 and 0.26 cm, respectively.","PeriodicalId":238835,"journal":{"name":"All Earth","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123725511","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