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Volume XXI |
Geomorphology

Characteristics of volcanic mountains morphostructure of Transcarpathia, Ukraine

1, 1, 1, 1, 1,

Abstract: The study presents a detailed geomorphological characterization of the volcanic mountains of Transcarpathia. Materials of previous geological researches, including the Transcarpathian geological exploration expedition, supplemented by the results of our own field researches, are systematized. Based on the analysis of relief forms and taking into account geomorphological and tectonic factors, Vyhorlat-Gutyn morphostructure of the second order is divided into morphostructures of the third order: Poprychny, Antaliv-Synyatska, Velykyi Dil, Tupy and Oash, which in turn are divided into morphostructures of lower orders. The Mukachevo morphostructure of the second order is composed of the following morphostructures of the third order: Beregovo hills, Kosino-Biganski hills, volcanic remains (Shalanka, Chorna Gora). Based on a detailed analysis of the collected materials, it was determined that the main role in shaping the modern relief of volcanic mountains belongs to channel and temporary water flows and weathering processe; consequently, river valleys and weathering surfaces were formed, which are the most important morphosculptures. On the basis of morphological and structural-lithological approach, as well as own field research, a geomorphological map of the volcanic mountains mountains of Transcarpathia on a scale of 1: 100,000 was compiled.

Keywords: , , , , , ,
Full article 10.5775/fg.2022.081.dDates:
Received: 30-04-2022 Accepted: 07-10-2022 Printed: 30-12-2022 Online: 09-03-2023
Affiliations:
  • 1 Faculty of Geography, Department of Physical Geography and Environmental Management, Uzhhorod National University, Universytetsʹka street, 14, Uzhhorod, Ukraine
Corresponding author:
  • vasyl.leta@uzhnu.edu.ua
Author contributions: Conceptualization, methodology, writing – original draft, Mykhailo Mykyta; writing - review & editing, validation, Maryana Salyuk, Roman Slavik and Mykola Karabiniuk; data curation, Vasyl Leta. All authors have read and agreed to the published.Declaration of interests: The authors declare no conflict of interest.
Citation:
APA 6 | Harvard 2008 | Turabian 6 | MLA 7
RIS | BibTeX
Funding: This research received no external funding.
Copyright: © 2023 The Author(s). Published by Forum geografic.
Provided under the Creative Commons Attribution-NonCommercial-NoDerivatives License.
Open Access article.
Volume XXI |
Geomorphology

Features of the morphology and dynamics of the shallow-island part of the Dolgaya Spit (the Sea of Azov)

1, 1,

Abstract: The relief of large coastal accumulative bodies, including cuspate spits, is an important subject in scientific and applied research. A characteristic feature of similar accumulative bodies is a shallow underwater part. The aim of this work is to study the shallow-island part structure of the Dolgaya Spit (the Sea of Azov) and to identify the natural mechanism that determines both the variability of accumulative body over short time intervals and the high stability of the geosystem as a whole. Digital elevation models (DEM) for the studied area were built on the basis of remote sensing data (Sentinel-2). It is established that the length of the shallow-island part is about 20 km. There are shelly shoals and islands with a complex configuration and relief. Sea level, the wind-wave regimes and the sediment load are the main factors that determine the dynamic equilibrium of the shallow-island part of the Dolgaya Spit and its relief. The Dolgaya Spit has distinctive features of a free accumulative body influenced by longshore sediment flow. The configuration of its surface part is characteristic of many cuspate spits formed by two sediment streams. But the shallow-island part develops under the influence of alternating transverse movements of water masses and waves from opposite sectors. The coexistence of signs of the near-shore bar and cuspate spit provides grounds for classifying the Dolgaya Spit not as a cuspate accumulative body (in particular as Azov-type spit) but as a separate type developing under joint action of transverse and longshore sediment flows.

Keywords: , , , ,
Full article 10.5775/fg.2022.175.dDates:
Received: 20-04-2022 Accepted: 10-10-2022 Printed: 30-12-2022 Online: 09-03-2023
Affiliations:
  • 1 Shirshov Institute of Oceanology, Russian Academy of Sciences, 117997, 36 Nakhimovskiy pr., Moscow, Russia
Corresponding author:
  • krylenko@mail.ru
Author contributions: Conceptualization, Viacheslav Krylenko and Marina Krylenko; methodology, Viacheslav Krylenko; formal analysis, Viacheslav Krylenko; investigation, Viacheslav Krylenko and Marina Krylenko; writing—original draft preparation, Viacheslav Krylenko and Marina Krylenko; writing—review and editing, Marina Krylenko. All authors have read and agreed to the published version of the manuscript.Declaration of interests: The authors declare no conflict of interest.
Citation:
APA 6 | Harvard 2008 | Turabian 6 | MLA 7
RIS | BibTeX
Funding: Research (part of relief analysis) was funded by Russian Science Foundation grant number 20-17-00060. Research on the dynamics of individual coastal sections was funded by State program № FMWE-2021-0013.Acknowledgements: Information on the dynamics of individual coastal sections was obtained within the framework of the State program № 0128-2021-0013.
Copyright: © 2023 The Author(s). Published by Forum geografic.
Provided under the Creative Commons Attribution-NonCommercial-NoDerivatives License.
Open Access article.
Volume XXI |
Environment

Estimating organic carbon in soils modified by technical processes in Kula Municipality (Bulgaria)

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Abstract: The current study focuses on the investigation of soil organic carbon in Technosols in Kula Municipality. It has several aims. There is a need of a provision of more data, regarding carbon sequestration rates in topsoils in plains that are formed in subhumid climatic conditions. Another aim is to check the comparability of the in-profile cultural layer with other ones that are built in different climatic conditions. Objects of the research are contemporary since buried soil horizons play a major part on the provision of essential ecosystem services. The characteristics of soil organic matter are determined by a chemical analysis of six soil samples in the laboratories of the Institute of Soil Science, Agrotechnologies and Plant Protection (ISSAPP) “N. Pushkarov”. The total carbon content is determined by the test of Turin and soil color is determined by Munsell Soil Color Charts (1975). Soil organic carbon values in topsoil vary from 670,000 tons/ha to 1,240,000 tons/ha. Organic carbon in the studied sites represents less than 1% of the soil sample. The study may be regarded as the first step in the assessment of Bulgarian Technosols and their role in the global carbon cycle.

Keywords: , , , ,
Full article 10.5775/fg.2022.213.dDates:
Received: 26-04-2022 Accepted: 09-10-2022 Printed: 30-12-2022 Online: 09-03-2023
Affiliations:
  • 1 Faculty of Geology and Geography, Sofia University “St. Kliment Ohridski”, Tsar Osvoboditel Blvd., 15, Sofia 1504, Bulgaria
Corresponding author:
  • saraffov@gea.uni-sofia.bg
Author contributions: Conceptualization and original draft preparation, A.S., P.B. and B.G.; methodology, A.S.; formal anal-ysis, P.B. and B.G.; investigation, A.S.; writing—review and editing, P.B. and B.G. All authors have read and agreed to the published version of the manuscript.Declaration of interests: The authors declare no conflict of interest.
Citation:
APA 6 | Harvard 2008 | Turabian 6 | MLA 7
RIS | BibTeX
Funding: The study is supported by the project “Ecosys-tem/landscape services provided by Technosol in Bulgaria” (contract 80-10-103/16.04.2020), fi-nanced by the budget of Sofia University "St. Kliment Ohridski” for scientific research in the year of 2020.
Copyright: © 2023 The Author(s). Published by Forum geografic.
Provided under the Creative Commons Attribution-NonCommercial-NoDerivatives License.
Open Access article.
Volume XXI |
Hydrology

Morphometry and Topographic Wetness Index Analysis for flood inundation mapping in Mata Allo watershed (South Sulawesi, Indonesia)

1, 2, 1, 3,

Abstract: Along with climate change, natural disasters will occur more frequently such as floods. Floods that occur in watersheds which include various human activities, such as Mata Allo (Indonesia) will especially cause a large enough impact. The elongated shape of the watershed has a slow response to peak discharge and time lag. The Mata Allo watershed is dominated by slopes above 25%→45% (65%) and agricultural land use which accounts for 53% of the area, which has an obvious impact on the amount of runoff and erosion that occurs. The eroded soil will be carried away by surface runoff and deposited in the plains between mountains and river floodplains. Based on the results of the study, the Topographic Wetness Index (TWI) map indicates that the part between the mountains and the floodplain around the Mata Allo river had a high TWI value. A high TWI value indicates a high vulnerability to anticipate flooding in the event of overflowing from the Mata Allo River. River morphometry, land use, and hydrological behavior in a watershed are closely related to the TWI value in the Mata Allo watershed.

Keywords: , , , , ,
Full article 10.5775/fg.2022.105.dDates:
Received: 14-06-2022 Accepted: 03-11-2022 Printed: 30-12-2022 Online: 08-03-2023
Affiliations:
  • 1 State University of Makassar, Faculty of Mathematics and Natural Science, Geography Department, Makassar, South Sulawesi, Indonesia
  • 2 State University of Makassar, Faculty of Technic, Department of Informatics and Computer Engineering, Makassar, South Sulawesi, Indonesia
  • 3 Gadjah Mada University, Faculty of Geography, Department of Geographic Information Science, Master Program in Remote Sensing, Bulaksumur, Yogyakarta, Indonesia
Corresponding author:
  • nurul.afdal.haris@mail.ugm.ac.id
Author contributions: Designing research concepts, U.; data processing and article writing, N.A.H.; formulation and interpretation of research results, M.L., and S.N. All authors have read and agreed to the published version of the manuscript.Declaration of interests: The authors declare no conflict of interest.
Citation:
APA 6 | Harvard 2008 | Turabian 6 | MLA 7
RIS | BibTeX
Funding: This research was funded by Ministry of Education, Culture, Research and Technology, Indonesia, 2022 Number: 033/E5/PG.02.00.PT.2022.Acknowledgements: Thanks to Makassar State University for providing the opportunity to carry out this research. Along with Makassar State University Geography students who have assisted in data processing.
Copyright: © 2023 The Author(s). Published by Forum geografic.
Provided under the Creative Commons Attribution-NonCommercial-NoDerivatives License.
Open Access article.
Volume XXI |
Environment

Covid-19 lockdown effect on aerosol optical depth in Delhi National Capital Region, India

1, 2,, 3, 4, 5

Abstract: Coronavirus cases in India have been steadily increasing since March 2020. COronaVIrus Disease 2019 (COVID-19) has been managed by a variety of preventative measures. A prominent measure by the Government of India to prevent the spread of Coronavirus Disease 2019 (COVID-19) began on March 25, 2020, with a complete suspension of all outdoor activities throughout the country. Such complete lockdown has resulted in a decrease in anthropogenic emissions, which is partly due to restrictions on human activities. Delhi National Capital Region (NCR), a landlocked area, suffers from high amounts of aerosols due to both natural and anthropogenic sources. The present research focuses on changes in Aerosol Optical Depth (AOD) prior to and during lockdown (initial and second lockdown phases) around satellite cities (Faridabad, Ghaziabad, Gautam Budh Nagar and Gurugram) of Delhi using high-resolution MODIS AOD product. With the implementation of lockdown measures in phase I and phase III of the current study region, AOD decreased dramatically, while phase II and phase IV lockdown phases had a higher concentration of aerosol. An unexpected increase in AOD occurred during the second lockdown compared with the initial lockdown and before the lockdown. Overall, the average percentage change from 2019 to 2020 during first lockdown is -4.44%, while the average percentage change from 2020 to 2021 is 27.63%.

Keywords: , , , ,
Full article 10.5775/fg.2022.192.dDates:
Received: 15-06-2022 Accepted: 10-12-2022 Printed: 30-12-2022 Online: 08-03-2023
Affiliations:
  • 1 Amity Institute of Geoinformatics and Remote Sensing (AIGIRS), Amity University, Sector 125, Noida-201313, U.P., India
  • 2 Department of Geography, School of Earth Sciences, Central University of Karnataka, Kadaganchi, Karnataka, India
  • 3 Department for Geoinformatics–Z_GIS, University of Salzburg, 5020 Salzburg, Austria
  • 4 Department of Geography, Faculty of Social Sciences, Khwaja Moinuddin Chishti Language University, Lucknow-226013, India
  • 5 Haryana Space Applications Centre Node, Gurgaon New labour court building, Mini Secretariat, Sector 11, Gurugram, Haryana 122001, India
Corresponding author:
  • swagata.gis@gmail.com
Author contributions: Conceptualization, S.G; methodology, X.X.; formal analysis, V.S.; investigation, V.S.; S.G. writing—original draft preparation, V.S.; writing—review and editing, S.G.; S; P.K.R.; Resources provision: S.; P.K.R.; S.S. All authors have read and agreed to the published version of the manuscript.Declaration of interests: The authors declare no conflict of interest.
Citation:
APA 6 | Harvard 2008 | Turabian 6 | MLA 7
RIS | BibTeX
Funding: This research was funded by Science & Engineering Research Board (SERB), Department of Science & Technology (DST), Government of India (Project File No. ECR/2017/000331). It is also partially supported for mobility activity by the ERASMUS+ Programme of the European Union.Acknowledgements: MODIS AOD products were available at Level-1 Atmosphere Archive & Distribution System (LAADS) (https://ladsweb.modaps.eosdis.nasa.gov/). Authors are thankful to NASA AERONET federation, AERONET scientific team and principal investigators for establishing, maintaining the sites, and providing AERONET data at https://aeronet.gsfc. nasa. gov/.
Copyright: © 2023 The Author(s). Published by Forum geografic.
Provided under the Creative Commons Attribution-NonCommercial-NoDerivatives License.
Open Access article.
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