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<front>
<journal-meta>
<journal-id journal-id-type="publisher">NHESSD</journal-id>
<journal-title-group>
<journal-title>Natural Hazards and Earth System Sciences Discussions</journal-title>
<abbrev-journal-title abbrev-type="publisher">NHESSD</abbrev-journal-title>
<abbrev-journal-title abbrev-type="nlm-ta">Nat. Hazards Earth Syst. Sci. Discuss.</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub">2195-9269</issn>
<publisher><publisher-name></publisher-name>
<publisher-loc>Göttingen, Germany</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.5194/nhess-2018-13</article-id>
<title-group>
<article-title>The Role of Unmanned Aerial Vehicles (UAVs) In Monitoring Rapidly Occuring Landslides</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Yaprak</surname>
<given-names>Servet</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Yildirim</surname>
<given-names>Omer</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Susam</surname>
<given-names>Tekin</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Inyurt</surname>
<given-names>Samed</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Oguz</surname>
<given-names>Irfan</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Geomatics Engineering, Gaziosmanpaşa University, Tokat, Turkey</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>Geomatics Engineering, Bulent Ecevit University, Zonguldak, Turkey</addr-line>
</aff>
<pub-date pub-type="epub">
<day>23</day>
<month>01</month>
<year>2018</year>
</pub-date>
<volume>2018</volume>
<fpage>1</fpage>
<lpage>18</lpage>
<permissions>
<copyright-statement>Copyright: &#x000a9; 2018 Servet Yaprak et al.</copyright-statement>
<copyright-year>2018</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://nhess.copernicus.org/preprints/nhess-2018-13/">This article is available from https://nhess.copernicus.org/preprints/nhess-2018-13/</self-uri>
<self-uri xlink:href="https://nhess.copernicus.org/preprints/nhess-2018-13/nhess-2018-13.pdf">The full text article is available as a PDF file from https://nhess.copernicus.org/preprints/nhess-2018-13/nhess-2018-13.pdf</self-uri>
<abstract>
<p>This study used the Unmanned Aerial Vehicle (UAV), which was designed and produced to monitor rapidly occurring landslides in forest areas. It was aimed to determine the location data for the study area using image sensors integrated into the UAV. The study area was determined as the landslide sites located in the Taşlıçiftlik Campus of Gaziosmanpaşa University, Turkey. It was determined that landslide activities were on going in the determined study area and data was collected regarding the displacement of materials. Additionally, it was observed that data about landslides may be collected in a fast and sensitive way using UAVs, and this method is proposed as a new approach. Flights took place over a total of five different periods. In order to determine the direction and coordinate variables for the developed model, eight Ground Control Points (GCPs), whose coordinates were obtained with the GNSS method, were placed on the study area. In each period, approximately 190 photographs were investigated. The photos obtained were analysed using the PIX4D software. At the end of each period, the RMS and Ground Sample Distance (GSD) values of the GCPs were calculated. Orthomosaic and Digital Surface Models (DSM) were produced for the location and height model. The results showed that max 
RMS&amp;thinsp;=&amp;thinsp;&amp;plusmn;3.3&amp;thinsp;cm and max 
GSD&amp;thinsp;=&amp;thinsp;3.57&amp;thinsp;cm/1.40&amp;thinsp;in. When the first and fifth periods are compared; the highest spatial displacement value 
&amp;Delta;S&amp;thinsp;=&amp;thinsp;111.0&amp;thinsp;cm, the highest subsidence value 
&amp;Delta;h&amp;thinsp;=&amp;thinsp;37.3&amp;thinsp;cm and the highest swelling value 
&amp;Delta;h&amp;thinsp;=&amp;thinsp;28.6&amp;thinsp;cm as measured.</p>
</abstract>
<counts><page-count count="18"/></counts>
</article-meta>
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