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<front>
<journal-meta>
<journal-id journal-id-type="publisher">ISPRS-Archives</journal-id>
<journal-title-group>
<journal-title>The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences</journal-title>
<abbrev-journal-title abbrev-type="publisher">ISPRS-Archives</abbrev-journal-title>
<abbrev-journal-title abbrev-type="nlm-ta">Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub">2194-9034</issn>
<publisher><publisher-name>Copernicus Publications</publisher-name>
<publisher-loc>Göttingen, Germany</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.5194/isprs-archives-XLIX-B3-2026-501-2026</article-id>
<title-group>
<article-title>Deformation Pattern Modifications Induced by 2021 Brentonico Earthquake: Insights from EGMS Ortho Products</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Eskandari</surname>
<given-names>Rasoul</given-names>
<ext-link>https://orcid.org/0000-0002-1472-2157</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Genzano</surname>
<given-names>Nicola</given-names>
<ext-link>https://orcid.org/0000-0001-8184-5635</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Scaioni</surname>
<given-names>Marco</given-names>
<ext-link>https://orcid.org/0000-0003-4058-6176</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Department of Architecture, Built Environment and Construction Engineering, Politecnico di Milano, via Ponzio 31, 20133 Milano, Italy</addr-line>
</aff>
<pub-date pub-type="epub">
<day>30</day>
<month>07</month>
<year>2026</year>
</pub-date>
<volume>XLIX-B3-2026</volume>
<fpage>501</fpage>
<lpage>507</lpage>
<permissions>
<copyright-statement>Copyright: &#x000a9; 2026 Rasoul Eskandari et al.</copyright-statement>
<copyright-year>2026</copyright-year>
<license license-type="open-access">
<license-p>This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this licence, visit <ext-link ext-link-type="uri"  xlink:href="https://creativecommons.org/licenses/by/4.0/">https://creativecommons.org/licenses/by/4.0/</ext-link></license-p>
</license>
</permissions>
<self-uri xlink:href="https://isprs-archives.copernicus.org/articles/XLIX-B3-2026/501/2026/isprs-archives-XLIX-B3-2026-501-2026.html">This article is available from https://isprs-archives.copernicus.org/articles/XLIX-B3-2026/501/2026/isprs-archives-XLIX-B3-2026-501-2026.html</self-uri>
<self-uri xlink:href="https://isprs-archives.copernicus.org/articles/XLIX-B3-2026/501/2026/isprs-archives-XLIX-B3-2026-501-2026.pdf">The full text article is available as a PDF file from https://isprs-archives.copernicus.org/articles/XLIX-B3-2026/501/2026/isprs-archives-XLIX-B3-2026-501-2026.pdf</self-uri>
<abstract>
<p>Post-seismic deformation reflects the crustal adjustment to stress perturbations induced by earthquakes and may lead to modifications of ongoing deformation patterns. While such effects are well documented for moderate-to-large events, their detectability and significance after low-magnitude earthquakes remain poorly understood. Here, possible deformation pattern modifications associated with the February 2022 ML 3.5 Brentonico earthquake in Northearn Italy are investigated using ground-deformation time series derived from the European Ground Motion Service (EGMS) Ortho products. The earthquake occurrence is treated as a temporal discontinuity, enabling the estimation of pre- and post-event vertical/horizontal differential velocities during 2019-2023. A dual-weighted interpolation scheme, accounting for both spatial proximity and time-series reliability, is applied to derive spatially coherent maps of kinematic modifications. The results reveal measurable and spatially organized changes in deformation patterns, including localized accelerations/decelerations and direction reversals. A clear spatial correspondence between differential velocity anomalies and mapped fault systems suggests that the earthquake acted as a localized stress perturbation, modulating pre-existing tectonic structures. This study demonstrates the capability of EGMS datasets to capture post-seismic deformation signals and highlights the importance of considering low-magnitude events in long-term deformation analyses.</p>
</abstract>
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