<abstract xmlns="http://www.w3.org/1999/xhtml">We present a method of approximation of a deformation field based on the local affine transformations constructed based on <italic>n</italic> nearest neighbors with respect to points of adopted grid. The local affine transformations are weighted by means of inverse distance squared between each grid point and observed points (nearest neighbors). This work uses a deformation gradient, although it is possible to use a displacement gradient instead – the two approaches are equivalent. To decompose the deformation gradient into components related to rigid motions (rotations, translations are excluded from the deformation gradient through differentiation process) and deformations, we used a polar decomposition and decomposition into a sum of symmetric and an anti-symmetric matrices (tensors). We discuss the results from both decompositions. Calibration of a local affine transformations model (i.e., number of nearest neighbors) is performed on observed points and is carried out in a cross-validation procedure. Verification of the method was conducted on simulated data-grids subjected to known (functionally generated) deformations, hence, known in every point of a study area.</abstract>

A method for local approximation of a planar deformation field

<abstract xmlns="http://www.w3.org/1999/xhtml">The study area is focused on the Kuril–Kamchatka Trench, North Pacific Ocean. This region is geologically complex, notable for the lithosphere activity, tectonic plates subduction and active volcanism. The submarine geomorphology is complicated through terraces, slopes, seamounts and erosional processes. Understanding geomorphic features of such a region requires precise modelling and effective visualization of the high-resolution data sets. Therefore, current research presents a Generic Mapping Tools (GMT) based algorithm proposing a solution for effective data processing and precise mapping: iterative module-based scripting for the automated digitizing and modelling. Methodology consists of the following steps: topographic mapping of the raster grids, marine gravity and geoid; semi-automatic digitizing of the orthogonal cross-section profiles; modelling geomorphic trends of the gradient slopes; computing raster surfaces from the xyz data sets by modules nearneighbor and XYZ2grd. Several types of the cartographic projections were used: oblique Mercator, Mercator cylindrical, conic equal-area Albers, conic equidistant. The cross-section geomorphic profiles in a perpendicular direction across the two selected segments of the trench were automatically digitized. Developed algorithm of the semi-automated digitizing of the profiles enabled to visualize gradients of the slope steepness of the trench. The data were then modelled to show gradient variations in its two segments. The results of the comparative geomorphic analysis of northern and southern transects revealed variations in different parts of the trench. Presented research provided more quantitative insights into the structure and settings of the submarine landforms of the hadal trench that still remains a question for the marine geology. The research demonstrated the effectiveness of the GMT: a variety of modules, approaches and tools that can be used to produce high-quality mapping and graphics. The GMT listings are provided for repeatability.</abstract>

Topographic surface modelling using raster grid datasets by GMT: example of the Kuril–Kamchatka Trench, Pacific Ocean

<abstract xmlns="http://www.w3.org/1999/xhtml">The article discusses a method applied for combining the results of Global Navigation Satellite Systems (GNSS) and 75-year old triangulation measurements to estimate the crustal movements in central western Bulgaria region. It was examined for joint analysis based on the results of GNSS with angular measurements of the first order triangulation network in Bulgaria during the period 1923–1930 year. As a result of the processing of GNSS and angular measurements, horizontal velocities of 15 points, strain rates, and rotation rates have been obtained. The results show dominating N–S extension at a rate of 1–2 mm/y and the deformation is not uniformly distributed over the studied area. The obtained results indicate the possibility of using old angular measurement of first-order triangulation points, together with GNSS data, to obtain estimates of the horizontal crustal movements.</abstract>

Deformation analysis in central west Bulgaria using triangulation and GPS data

AHEAD OF PRINT

Volume 117 (2024): Issue 1 (June 2024)

Volume 116 (2023): Issue 1 (December 2023)

Volume 115 (2023): Issue 1 (June 2023)

Volume 114 (2022): Issue 1 (December 2022)

Volume 113 (2022): Issue 1 (June 2022)

Volume 112 (2021): Issue 1 (December 2021)

Volume 111 (2021): Issue 1 (June 2021)

Volume 110 (2020): Issue 1 (December 2020)

Volume 109 (2020): Issue 1 (June 2020)

Volume 108 (2019): Issue 1 (December 2019)

Volume 107 (2019): Issue 1 (June 2019)

Volume 106 (2018): Issue 1 (December 2018)

Volume 105 (2018): Issue 1 (June 2018)

Volume 104 (2017): Issue 1 (December 2017)

Volume 103 (2017): Issue 1 (June 2017)

Volume 102 (2016): Issue 1 (December 2016)

Volume 101 (2016): Issue 1 (June 2016)

Volume 100 (2016): Issue 1 (May 2016)

Volume 99 (2015): Issue 1 (December 2015)

Volume 98 (2015): Issue 1 (July 2015)

Volume 97 (2014): Issue 1 (December 2014)

Volume 96 (2014): Issue 1 (June 2014)

Volume 95 (2013): Issue 1 (December 2013)

Volume 94 (2013): Issue 1 (October 2013)

Reports on Geodesy and Geoinformatics

 Reports on Geodesy and Geoinformatics (formerly Reports on Geodesy) is recognized as a semi-annual scientific journal that has appeared since 1991. The volumes of this journal had been prepared and edited by the staff of the Institute of Geodesy and Geodetic Astronomy until 2008 and then during the reorganization of the Faculty of Geodesy and Cartography between years 2008-2011 the volumes were edited and printed by the scientists of the Department of Geodesy and Geodetic Astronomy of Warsaw University of Technology (WUT). Since 2012 the journal has been edited by the scientific staff of the Faculty of Geodesy and Cartography of WUT.  Each paper submitted for publishing in Reports on Geodesy and Geoinformatics is peer-reviewed. The list of our revisers contains more than 200 scientists both from Poland as well as from other countries. Our revisers are recognized specialists from different branches of geodesy and cartography. In some issues of Reports on Geodesy and Geoinformatics there are presented contents of papers announced at international conferences and such volumes may be recognized as the proceedings from these scientific meetings.  All papers published in Reports on Geodesy and Geoinformatics are available in an open access formula. All of them have been also distributed among over 110 libraries in Poland as well as foreign institutions and are considered to be very well acknowledged by the international geodetic community.  Peer-review. The journal uses single-blind peer review (the authors do not know the reviewers) to avoid bias. See more information &lt;Peer Review&gt;.  Journal policies. The journal provides its’ policies, which include detailed information about submission, editorial and publishing processes and guidelines for authors and reviewers. All parties are being introduced to their rights and responsibilities to ensure smooth and ethical publishing process. See more information &lt;Journal Policies&gt;  Fees and Charges. The journal operates as open access journal, the process is completely free of charges to both authors and readers. All publication fees are covered by Warsaw University of Technology.　  Publication schedule. The journal is semi-annual (2 Issues per year in June and December). All articles are published online under CC BY-NC-ND licence 4.0 within four weeks after acceptance as a continuous publication (Online first) to avoid any delays.　  Copyright. Individual articles are published Open Access under the Creative Commons Licence: CC BY-NC-ND 4.0, which permits non-commercial use, distribute, display and perform only original copies of the work in any medium, provided the original author and source are credited. Authors retain copyright in their articles, but grant RGG the right of the first publication. The journal is copyright RGG © Warsaw University of Technology (WUT), all rights reserved.   Aims and ScopeReports on Geodesy and Geoinformatics in keeping with tradition, is intent on presenting the whole of technological and scientific progress taking place in modern geodesy and cartography, where research and implementation of geoinformatic character play an exceptionally important role in accelerating the development of our discipline. It is for this reason that we have decided to expand the journal’s formula so as to encourage a broader group of scientists and specialists in the realms of geodesy, computer science, cartography, photogrammetry, remote sensing, geography, geology, and related sciences who are developing new methods and technologies of geovisualization and are involved in the modeling of space applying GIS technology to collaborate with us. At the same time, the journal’s profile shall maintain the importance of other theoretical, industrial, and development research in the areas of theoretical geodesy, geodetic astronomy, navigation, and studies on displacements and the classic problems facing geodesic surveying.  Journal PoliciesThe journal provides its’ policies, which include detailed information about submission, editorial and publishing processes and guidelines for authors and reviewers. All parties are being introduced with their rights and responsibilities to ensure smooth and ethical publishing process. Visit following subsections for more details on each policy:    Publication Ethics and Publication Malpractice Statement  Open Access  Privacy Statement   Reports on Geodesy and Geoinformatics (formerly Reports on Geodesy) in keeping with tradition, is intent on presenting the whole of technological and scientific progress taking place in modern geodesy and cartography, where research and implementation of geoinformatic character play an exceptionally important role in accelerating the development of our discipline. It is for this reason that we have decided to expand the journal's formula so as to encourage a broader group of scientists and specialists in the realms of geodesy, computer science, cartography, photogrammetry, remote sensing, geography, geology, and related sciences who are developing new methods and technologies of geovisualization and are involved in the modeling of space applying GIS technology to collaborate with us. At the same time, the journal's profile shall maintain the importance of other theoretical, industrial, and development research in the areas of theoretical geodesy, geodetic astronomy, navigation, and studies on displacements and the classic problems facing geodesic surveying.Internet access to complete articles in an "open access" formula will significantly facilitate use by those who are interested as well as expand the circle of readers.  Archiving  Sciendo archives the contents of this journal in Portico - digital long-term preservation service of scholarly books, journals and collections.  Plagiarism Policy  The editorial board is participating in a growing community of Similarity Check System's users in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process. 

Reports on Geodesy and Geoinformatics

Volume 108 (2019): Issue 1 (December 2019)

Original Article

A method for local approximation of a planar deformation field

Topographic surface modelling using raster grid datasets by GMT: example of the Kuril–Kamchatka Trench, Pacific Ocean

Deformation analysis in central west Bulgaria using triangulation and GPS data

Wyszukiwanie

Wszystkie tomy i zeszyty w tym czasopiśmie