Identification of decoding signs of effusive volcanic activity manifestations for identifying its impact on the territory

V. A. Melkiy; A. A. Verhoturov

doi:10.30533/GiA-2025-016

VAK Russia 1.6.15 UDC 528.88 CSCSTI 36.23 VAK Russia 1.6.19 VAK Russia 1.6.21 UDC 528.44 UDC 551.21 CSCSTI 38.37

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IDENTIFICATION OF DECODING SIGNS OF EFFUSIVE VOLCANIC ACTIVITY MANIFESTATIONS FOR IDENTIFYING ITS IMPACT ON THE TERRITORY Identification of decoding signs of effusive volcanic activity manifestations for identifying its impact on the territory

АА Аа

Published in Izvestia Vuzov. Geodesy and Aerophotosurveying · Volume 69, Issue 2 · Pages 93–107 · Rubric: Land management, cadastre and land monitoring

DOI: https://doi.org/10.30533/GiA-2025-016

Received: 10.11.2024 Accepted: 23.04.2025 Published: 30.04.2025 Language of publication: RUS

Authors

V. A. Melkiy

A. A. Verhoturov

V. A. Melkiy

A. A. Verhoturov

ABSTRACT

The purpose of the work is to identify the decipherable signs of volcanic effusive activity that are typical for lava flows of basaltic and andesite-basaltic composition. The article presents the data of a study of the distribution of volcanogenic deposits in the territory adjacent to the eruptive center. Effusive activity is typical for volcanoes whose magmatic melt has a basaltic or andesite-basaltic composition. The type of effusive eruptions depends on the gas saturation of the magma: a more viscous melt saturated with silica oxide explodes more strongly. A relatively calm outflow of liquid basaltic magma over the edge of the crater is typical of the Hawaiian and fissure types of eruptions. With an increase in the silicic acidity of the magma, the explosive spread occurs with greater force, cones are formed on the surface of the flows. Eruptions of andesite-basaltic magma can most often be attributed to the Strombolian type, in which the volcano periodically ejects bombs, lapilli and ashes of sand and smaller dimensions. The work used field research materials, low- and medium-resolution space images obtained from Landsat, Canopus, Sentinel satellites, and digital aerial photography data using unmanned aerial vehicles. Aerospace images made it possible to fairly accurately analyze changes in the state of the surfaces of lava flows of various compositions. As a result of deciphering the manifestations of volcanic activity of the effusive type, a classifier of deciphering features of these manifestations was created and criteria for their formalization for automated deciphering were developed. Determining the manifestations of activity characteristic of a particular volcano allows us to classify its foci as type M (mantle) or K (crustal), to establish the tectonic position of the structure and the geodynamic regime, which determine the danger of effusive and explosive eruptions. More detailed studies require the use of unmanned aerial vehicles. The results of decoding aerospace images reflecting the manifestations of effusive activity of volcanoes made it possible to determine the main decoding features of these manifestations and identify the criteria for their formalization for further automation of the process of their recognition, determination of the level of volcanic hazard and land use planning.

KEYWORDS

cadastral assessment, effusive volcanism, remote sensing, decoding of satellite images, risk, geoinformation mapping

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Melkiy V. A., Verhoturov A. A. Identification of decoding signs of effusive volcanic activity manifestations for identifying its impact on the territory // Izvestia Vuzov. Geodesy and Aerophotosurveying. 2025. no. 2. pp. 93-107. DOI: https://doi.org/10.30533/GiA-2025-016. (Date of access 09.10.2026).

MLA

V. A. Melkiy, Verhoturov A. A.. "Identification of decoding signs of effusive volcanic activity manifestations for identifying its impact on the territory." Izvestia Vuzov. Geodesy and Aerophotosurveying 69.2 (2025): 93-107. DOI: https://doi.org/10.30533/GiA-2025-016.

APA

Melkiy V. A., Verhoturov A. A. (2025). Identification of decoding signs of effusive volcanic activity manifestations for identifying its impact on the territory. Izvestia Vuzov. Geodesy and Aerophotosurveying, 69(2), 93-107. https://doi.org/10.30533/GiA-2025-016

Chicago

V. A. Melkiy, Verhoturov A. A.. "Identification of decoding signs of effusive volcanic activity manifestations for identifying its impact on the territory." Izvestia Vuzov. Geodesy and Aerophotosurveying 69, no. 2 (2025): 93-107. https://doi.org/10.30533/GiA-2025-016.

WIKI

{{cite journal | author = Melkiy V. A., Verhoturov A. A. | title = Identification of decoding signs of effusive volcanic activity manifestations for identifying its impact on the territory | journal = Izvestia Vuzov. Geodesy and Aerophotosurveying | year = 2025 | volume = 69 | issue = 2 | pages = 93-107 | doi = 10.30533/GiA-2025-016 }}

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IDENTIFICATION OF DECODING SIGNS OF EFFUSIVE VOLCANIC ACTIVITY MANIFESTATIONS FOR IDENTIFYING ITS IMPACT ON THE TERRITORY Identification of decoding signs of effusive volcanic activity manifestations for identifying its impact on the territory

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