Valentino Demurtas

ORCID: 0000-0003-4187-0902
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About
Contact & Profiles
Research Areas
  • Landslides and related hazards
  • Maritime and Coastal Archaeology
  • Geological formations and processes
  • Coastal and Marine Dynamics
  • Cryospheric studies and observations
  • 3D Surveying and Cultural Heritage
  • Geology and Paleoclimatology Research
  • Space Science and Extraterrestrial Life
  • Planetary Science and Exploration
  • Astro and Planetary Science
  • Masonry and Concrete Structural Analysis
  • Hydrology and Sediment Transport Processes
  • Building materials and conservation
  • Karst Systems and Hydrogeology
  • earthquake and tectonic studies
  • Satellite Image Processing and Photogrammetry
  • Rock Mechanics and Modeling
  • Remote Sensing and LiDAR Applications
  • Synthetic Aperture Radar (SAR) Applications and Techniques
  • Fire effects on ecosystems
  • Remote-Sensing Image Classification
  • Flood Risk Assessment and Management
  • Methane Hydrates and Related Phenomena

University of Cagliari
2019-2024

Istituto Nazionale di Fisica Nucleare, Sezione di Cagliari
2024

Abstract A rapidly growing population across mountain regions is pressuring expansion onto steeper slopes, leading to increased exposure of people and their assets slow‐moving landslides. These moving hillslopes can inflict damage buildings infrastructure, accelerate with urban alterations, catastrophically fail climatic weather extremes. Yet, systematic estimates landslide drivers have been elusive. Here, we present a new global database 7,764 large (A ≥ 0.1 km 2 ) landslides nine IPCC...

10.1029/2024ef004830 article EN cc-by Earth s Future 2024-09-01

During the lowstand sea-level phase of Last Glacial Maximum (LGM), a large part current Mediterranean continental shelf emerged. Erosional and depositional processes shaped coastal strips, while inland areas were affected by aeolian fluvial processes. Evidence both subsequent phases eustatic sea level rise can be observed on Sardinia (Italy), including submerged palaeo-shorelines landforms, indicators relict palaeo-environments. This paper shows results high-resolution survey off San Pietro...

10.3390/w13020155 article EN Water 2021-01-11

Connections between Plio-Pleistocenic tectonic activity and geomorphological evolution were studied in the Pardu Valley Quirra (Ogliastra, East Sardinia). The intensive Quaternary Sardinia linked to opening of Tyrrhenian Basin is known. In Eastern Sardinia, it manifests with an uplift that recorded by indicators, such as deep-seated gravitational slope deformation, fluvial captures, engraved valleys, waterfalls, heterogeneous water drainage. River flows from NW toward SE then abruptly...

10.3390/land10111193 article EN cc-by Land 2021-11-05

In this study, we analyse deep-seated gravitational slope deformations (DSGSDs) in central Sardinia. The area is characterised by plateaus with a prominent limestone scarp overlying metamorphites. A comprehensive mapping of structural, karst, fluvial, and morphologies Pardu Ulassai valleys presented herein. uplift linked to the Plio-Pleistocene tectonic activity leads high-slope topography, which favours processes, such as DSGSDs rock-avalanches. Although DSGSD common phenomenon relief...

10.1080/17445647.2021.1986157 article EN cc-by Journal of Maps 2021-10-13

The maps of the geohazard-related features North Sardinia continental margin produced by Magic project (MArine Geohazard along Italian Coasts) are here presented. were created on base morphobathymetric data obtained with multibeam echo sounders. ThreCoNISMa, DSCG Università degli studi di Cagliari, Cittadella Universitaria Monserrato - S.P. Monserrato-Sestu, (CA), Italye wide canyon systems, Castelsardo to west, Lavezzi and Caprera east, originate from shelf between islands Corsica run...

10.1080/17445647.2024.2357356 article EN cc-by Journal of Maps 2024-06-18

The Maps of Geohazard features Southern Sardinia produced in the framework Magic project (MArine along Italian Coasts) are here presented. MaGIC (Marine had aim mapping geohazard seas. were derived from digital elevation model interpretation seafloor morphology and shallow sub-surface. From marine geo-hazards point view, main critical elements represented by gravitational mass processes canyon heads, some which, as Toro Canyon, exposed to seismic triggering. In other cases, we observed that...

10.1080/17445647.2024.2375093 article EN cc-by Journal of Maps 2024-08-20

In Italy, landslides are one of the main geological hazards. Sometimes urban areas affected by deep-seated gravitational slope deformations (DGSDs) that can lead to a potentially catastrophic failure and trigger secondary collateral landslide. these cases, monitoring is important for early warning risk reduction. this study, we analyzed DGSDs, in particular, lateral spreads, inhabited Ulassai, eastern-central Sardinia. Starting from high-resolution geostructural geomorphological surveys...

10.1080/22797254.2022.2161418 article EN cc-by European Journal of Remote Sensing 2022-12-28

Abstract This paper shows the results of high-resolution survey on continental shelf Bonifacio Strait (north Sardinia). Multisensor and multiscale data obtained by means sub-bottom profiler CHIRP multibeam side-scan sonar made it possible to identify morphological features bedforms. The analysis both sonograms mosaic seismic allowed us perform a detailed mapping various substrates highlighting presence complex bedform associations. These associations are typical environments affected...

10.1144/sp523-2022-10 article EN Geological Society London Special Publications 2022-08-25

On the surface of Moon a large number linear features are recognizable. Long and narrow depressions defined as lunar rilles. Their morphology has different characteristics, related to their origin. Among these, sinuous rilles represent lineaments considered remnants shallow lava channels. In this article, quadrant been analyzed recognize map type morphology. An accurate morphometric analysis accomplished, using reconnaissance orbiter camera which resolution 100 m/pixel, digital elevation...

10.1109/jstars.2020.3003080 article EN cc-by IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 2020-01-01

<title>Abstract</title> The rapidly growing population in many mountain regions is pressuring expansion onto steeper slopes, increasingly exposing people and their assets to slow-moving landslides [1, 2, 3, 4]. These moving hillslopes can inflict damage buildings infrastructure [5, 6], accelerate with urban alterations [7, 8], catastrophically fail climatic weather extremes [9,10,11]. Cities mountains especially face pressure from rising migrating populations [12] seeking out economic...

10.21203/rs.3.rs-3978734/v1 preprint EN cc-by Research Square (Research Square) 2024-04-11

We present a geomorphological map of the southwestern coast Sardinia encompassing inland and offshore areas S’Omu e S’Orku Mesolithic site. The submerged area was documented by high-resolution multibeam bathymetry combined with Side-Scan Sonar data. emerged coastal surveyed using Uncrewed Aerial Vehicle Remote Sensing field surveys. landforms were shaped coastal, fluvial, gravity-induced processes. Most appear be modeled in subaerial conditions during sea-level lowstands, then sealed rising...

10.1080/17445647.2023.2182722 article EN cc-by Journal of Maps 2023-03-21

Lunar rilles are any of the long, narrow depressions on surface Moon. These structures have different characteristics, which related to their origin. Here, a classification lunar in groups with similar morphometric features and likely same formation mechanisms is proposed. The detection, mapping has been achieved two quadrants northern hemisphere, located between -90°E 90°E longitude 0°N 60°N latitude. For detection rilles, we used images from Reconnaissance Orbiter Camera (LROC) [1]...

10.1109/igarss.2019.8900143 article EN IGARSS 2022 - 2022 IEEE International Geoscience and Remote Sensing Symposium 2019-07-01

&amp;lt;p&amp;gt;Some cases of deep-seated gravitational slope deformations (DSGSDs) and paleo-landslides in central-eastern Sardinia are presented. This study focuses on the Quaternary landslide deposits preserved flanks Rio Pardu Ulassai valleys. The area is characterized by a wide&amp;lt;br&amp;gt;plateau with prominent Jurassic limestone scarp overlying Palaeozoic metamorphites. Plio-Pleistocenic uplift, linked to Tirrenian basin opening consequent basalt volcanism, generated high...

10.5194/egusphere-egu2020-22360 article EN 2020-03-10

&amp;lt;p&amp;gt;Cagliari is the main city of Sardinia and located in south cost island. It Is built on ten small rocky hills separated by valleys bordered a wide sandy beach divide cliff promontory. Both natural man-made lagoons ponds are widespread. Large areas affected hydraulic, sinkhole, landslide risks.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;Geological geomorphological field survey integrated Uncrewed aerial vehicle, LiDAR photos remote sensing analysis were performed, order to map analyze...

10.5194/icg2022-527 preprint EN 2022-06-20

&amp;lt;p&amp;gt;The tectonic structure of Sardinia is linked to the geodynamic evolution western Mediterranean during Alpine phase. In particular, eastern continental margin result opening Tyrrhenian basin which still evolving. The Pliocenic and Quaternary distensive phase lead an uplift in whose effects are manifested geomorphological setting. Morphotectonic analysis were used characterize paleo active processes Ogliastra area. Palaeo-erosive surfaces, volcanic mesas, Steep slopes,...

10.5194/icg2022-526 preprint EN 2022-06-20
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