Geodesy and Cartography最新文献_第5页

Spatial planning in the Baltic States, affected by depopulation 受人口减少影响的波罗的海国家空间规划

Geodesy and Cartography Pub Date : 2023-11-06 DOI: 10.24425/gac.2020.135149

Rimvydas Gaudėšius

引用次数: 0

Cross-comparison of meteorological parameters and ZTD observations supplied by microwave radiometers, radiosondes, and GNSS services 气象参数与由微波辐射计、无线电探空仪和GNSS服务提供的ZTD观测资料的交叉比较

Geodesy and Cartography Pub Date : 2023-11-06 DOI: 10.24425/gac.2021.136683

引用次数: 1

Investigation of background noise in the GNSS position time series using spectral analysis – A case study of Nepal Himalaya 利用频谱分析研究GNSS位置时间序列中的背景噪声-以尼泊尔喜马拉雅地区为例

Geodesy and Cartography Pub Date : 2023-11-06 DOI: 10.24425/gac.2019.128468

{"title":"Investigation of background noise in the GNSS position time series using spectral analysis – A case study of Nepal Himalaya","authors":"","doi":"10.24425/gac.2019.128468","DOIUrl":"https://doi.org/10.24425/gac.2019.128468","url":null,"abstract":"Position time series from permanent Global Navigation Satellite System (GNSS) stations are commonly used for estimating secular velocities of discrete points on the Earth’s surface. An understanding of background noise in the GNSS position time series is essential to obtain realistic estimates of velocity uncertainties. The current study focuses on the investigation of background noise in position time series obtained from thirteen permanent GNSS stations located in Nepal Himalaya using the spectral analysis method. The power spectrum of the GNSS position time series has been estimated using the Lomb–Scargle method. The iterative nonlinear Levenberg–Marquardt (LM) algorithm has been applied to estimate the spectral index of the power spectrum. The power spectrum can be described by white noise in the high frequency zone and power law noise in the lower frequency zone. The mean and the standard deviation of the estimated spectral indices are −1.46±0.14,−1.39±0.16 and −1.53± 0.07 for north, east and vertical components, respectively. On average, the power law noise extends up to a period of ca. 21 days. For a shorter period, i.e. less than ca. 21 days, the spectra are white. The spectral index corresponding to random walk noise (ca. –2) is obtained for a site located above the base of a seismogenic zone which can be due to the combined effect of tectonic and nontectonic factors rather than a spurious monumental motion. Overall, the usefulness of investigating the background noise in the GNSS position time series is discussed.","PeriodicalId":44129,"journal":{"name":"Geodesy and Cartography","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135679045","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

Information about real estate – a comparative study of Poland and Latvia 关于房地产的信息-波兰和拉脱维亚的比较研究

Geodesy and Cartography Pub Date : 2023-11-06 DOI: 10.24425/gac.2019.128469

{"title":"Information about real estate – a comparative study of Poland and Latvia","authors":"","doi":"10.24425/gac.2019.128469","DOIUrl":"https://doi.org/10.24425/gac.2019.128469","url":null,"abstract":": Each European Union Member State keeps a register of data on properties located in its territory. The number, type and scope of these properties are determined by each Member State’s needs. The INSPIRE Directive enables the scope of data to be harmonised, and the data to be made available for the purpose of assisting legislators in taking decisions and actions likely to have either direct or indirect impact on the environment. The aim of the study was to indicate the basic differences between the data contained in Polish and Latvian cadastres. Unlike other similar studies analysing the content of data in the cadastre, this article pays special attention to the number of available sets of data about the parcel and its surroundings, the ease of access to these data and the possibility for acquiring them by an interested party without incurring additional fees. This is particularly important in activities related to spatial management and the development of an information society. The results show that in both countries, the decision makers have approached the INSPIRE Directive differently. Direct analyses conducted for the cities of Wrocław (Poland) and Riga (Latvia) demonstrated that the information system in Wrocław contains a considerably greater scope of information available free of charge, is easier to use and offers more services. The Latvian Republic’s spatial information system provides a less-developed scope of information about real estate (without fees) that is dispersed on several websites, which slows down and hinders its use.","PeriodicalId":44129,"journal":{"name":"Geodesy and Cartography","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135679729","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: 2

Comparing variance of signal contained in the most recent GRACE solutions 比较最新GRACE解中包含的信号方差

Geodesy and Cartography Pub Date : 2023-11-06 DOI: 10.24425/gac.2020.131084

{"title":"Comparing variance of signal contained in the most recent GRACE solutions","authors":"","doi":"10.24425/gac.2020.131084","DOIUrl":"https://doi.org/10.24425/gac.2020.131084","url":null,"abstract":": Gravity Recovery and Climate Experiment (GRACE) mission data is widely used in various ﬁelds of science. GRACE explored changes of the gravity ﬁeld regularly from April 2002 to June 2017. In the following research, we examine variance of signal contained in two different formats of GRACE data: standard spherical harmonics and mass concentration blocks (so-called “mascons”) solutions, both provided in the most recent releases. For spherical harmonics-based solution, we use monthly gravity ﬁeld solutions provided up to degree and order (d/o) 96 by three different computing centers, i.e. the NASA’s Jet Propulsion Laboratory (JPL), the German Research Center for Geosciences (GFZ) and the Center for Space Research (CSR). For the mass concentration blocks, we use values of total water storage provided by the CSR, JPL and the Goddard Space Flight Center (GSFC) computing centers, which we convert to spherical harmonic coefﬁcients up to d/o 96. We show that using the anisotropic DDK3 ﬁlter to smooth the north-south stripes present in total water storage obtained from standard spherical harmonics solution leaves more information than common isotropic Gaussian ﬁlter. In the case of mascons, GSFC solution contains much more information than the CSR and JPL releases, relevant for corresponding d/o. Differences in variance of signal arise from different background models as well as various shape and size of mascons used during processing of GRACE observations.","PeriodicalId":44129,"journal":{"name":"Geodesy and Cartography","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135679732","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: 5

The study of local terrain modeling methods for vertical planning of the territory 研究区域垂直规划的局部地形建模方法

Geodesy and Cartography Pub Date : 2023-11-06 DOI: 10.24425/gac.2021.136684

{"title":"The study of local terrain modeling methods for vertical planning of the territory","authors":"","doi":"10.24425/gac.2021.136684","DOIUrl":"https://doi.org/10.24425/gac.2021.136684","url":null,"abstract":"This work aims to study the vertical planning method for the terrain area as part of the process of construction geodetic support. Such planning will be carried out based on the aerial survey data from UAVs, which allow the creation of a high-quality digital elevation model (DEM) with sufficient node density for reliable surface terrain modelling. During the study, we test the hypothesis of the possibility of using archival aerial photographs from UAVs to model the terrain of the local area. Both the actual achievable accuracy of terrain modeling in the course of photogrammetric processing of archived aerial photographs, and methods for creating a polygonal terrain model using input spatial data in the form of clouds of 3D points of a given density require analysis. To do this, we will perform comparisons of the accuracy of calculating earth masses, carried out based on the digital triangulation elevation models (TIN). These models were based on different algorithms for creating Delaunay triangulation with different degrees of 3D point sparsity. We proposed to use sparsity of dense clouds of points representing the surface of the terrain and which were obtained by the photogrammetric method. Computer terrain modelling and calculation of vertical planning parameters were performed by us for the area with flat terrain at angles up to 3.5 degrees. We evaluated the potential of archived UAV aerial photographs and algorithms for creating Delaunay triangulation at different densities of its nodes for calculating the volumes of earth masses.","PeriodicalId":44129,"journal":{"name":"Geodesy and Cartography","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135679855","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

THE USE OF GIS TECHNOLOGIES TO DETERMINE TRANSPORT ACCESSIBILITY IN TOURISM 利用地理信息系统技术确定旅游中的交通可达性

Geodesy and Cartography Pub Date : 2023-10-26 DOI: 10.3846/gac.2023.17009

Viktoriia Lepetiuk, Vladislav Tretyak, Yuliia Maksymova

{"title":"THE USE OF GIS TECHNOLOGIES TO DETERMINE TRANSPORT ACCESSIBILITY IN TOURISM","authors":"Viktoriia Lepetiuk, Vladislav Tretyak, Yuliia Maksymova","doi":"10.3846/gac.2023.17009","DOIUrl":"https://doi.org/10.3846/gac.2023.17009","url":null,"abstract":"The article examines the possibilities of using GIS technologies in the tourism sphere. The study focused on the conceptual modeling of tourism and the geoinformation support in planning tourist routes. The subject area of tourism as a conceptual model in terms of database modeling and GIS using UML language was characterized and presented. The method of using the GIS to solve the problem of modeling transport accessibility zones to tourist attractions in shaping transport routes has been proposed. The QGIS was used in tandem with a database management system such as PostgreSQL. GRASS GIS environment was used to perform spatial analysis. The object of this research is the transport network in one of the districts of the Ternopil region. We have tested in practice the proposed technological scheme on the example of the Ternopil district with the use of PostgreSQL database management system, QGIS, and GRAS GIS. We have created a tourist isochrone map of this region with some attractive places. The proposed methodology for determining transport accessibility using spatial analysis tools with the creation of isochrone maps and a flexible system of adjustments in the GIS makes it possible to optimize already existing tourism routes and create new ones.","PeriodicalId":44129,"journal":{"name":"Geodesy and Cartography","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134908985","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

CONTRIBUTION OF AEROGRAVITY DATA INTERPRETATION TO THE STUDY OF THE DEEP STRUCTURE OF AGADEM PETROLEUM BLOCK (NIGER) 航空重力资料解释对agadem石油区块深部构造研究的贡献

Geodesy and Cartography Pub Date : 2023-10-24 DOI: 10.3846/gac.2023.17299

Abdourhamane Halidou Amadou, Driss El Azzab, Abdel Ali Chaouni

{"title":"CONTRIBUTION OF AEROGRAVITY DATA INTERPRETATION TO THE STUDY OF THE DEEP STRUCTURE OF AGADEM PETROLEUM BLOCK (NIGER)","authors":"Abdourhamane Halidou Amadou, Driss El Azzab, Abdel Ali Chaouni","doi":"10.3846/gac.2023.17299","DOIUrl":"https://doi.org/10.3846/gac.2023.17299","url":null,"abstract":"The main information provided by gravity maps is the geographical distribution of density heterogeneities in the subsurface. It is an important tool widely used for the mapping of geological structures, especially in the oil industry. Thus, this study based on the interpretation of aerogravity data has for objective, the qualitative description of the characteristics of the gravity anomalies of the study area, interpretation and mapping of the gravity lineaments as well as their depths, knowing that the lineaments constitute potential structural traps favorable to the accumulation of the hydrocarbons. Methods such as horizontal derivative, upward continuation and Euler deconvolution are used to give a geological signifiance to the different anomalies and to highlight deep structures. Thus, the analysis of the residual anomaly map revealed elongated negative and positive anomaly zones, oriented globally NW-SE, considered respectively as horst and graben zones. Gravity lineaments, considered as normal faults, are mapped using the horizontal gradient method. Finally, the depths of the density contrasts are estimated by the Euler deconvolution calculation using the value “1” as structural index. The depths thus determined are highly variable. The shallowest depths vary between 3000 m and 6000 m, while the deepest depths reach 18000 m.","PeriodicalId":44129,"journal":{"name":"Geodesy and Cartography","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135219789","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

DETERMINING THE LOCATION OF MALAYSIA AIRLINES FLIGHT MH370 确定马来西亚航空公司mh370航班的位置

Geodesy and Cartography Pub Date : 2023-10-23 DOI: 10.3846/gac.2023.16726

Atınç Pırtı, M. Ali Yucel, Ramazan Gürsel Hoşbaş

引用次数: 0

ASSESSMENT OF LAND DEGRADATION USING REMOTE SENSING APPROACH 利用遥感方法评估土地退化

Geodesy and Cartography Pub Date : 2023-10-20 DOI: 10.3846/gac.2023.16007

Ekundayo Abayomi Adesina, Huzaifa Ishaq Muhammad

{"title":"ASSESSMENT OF LAND DEGRADATION USING REMOTE SENSING APPROACH","authors":"Ekundayo Abayomi Adesina, Huzaifa Ishaq Muhammad","doi":"10.3846/gac.2023.16007","DOIUrl":"https://doi.org/10.3846/gac.2023.16007","url":null,"abstract":"Land degradation leads to the alteration of ecological and economic functions due to a decrease in the productivity and quality of the land. Land degradation over Minna, Niger State, was assessed using geospatial techniques. Studies between the rainfall and NDVI used on human-induced and climate-induced land degradation were correlated. Landsat imageries on a decadal scale (2000–2019) were processed and classified using a maximum likelihood classifier. NDVI trends are not by rainfall dynamics to human actions. Averagely low, about 24.14%, correlation was found between the observed land degradation and the precipitation factor, yielding more than 50% congruence in degradation induced by human activities. The study discovered that the built-up and bare surfaces are increasing. The long-term changes in built-ups were 96% between 2000 and 2019; conversely, a sharp decrease in vegetative lands at about –19.38%. Based on the terrain analysis, locations have less steep and moderate slopes in the study area due to continuous urban expansion and demographic pressure. Consequentially, over time, available lands not degraded within the study areas would be reduced. The study recommended a proper land management system of land use allocation and land cover activities.","PeriodicalId":44129,"journal":{"name":"Geodesy and Cartography","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135616232","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