Seabed Mapping of the Bulgarian Coastal Zone between Sozopol and Tsarevo (Southern Bulgarian Black Sea)

Dimitrov, Lyubomir; Prodanov, Bogdan; Doncheva, Valentina; Berov, Dimitar; Trifonova, E. P.

doi:10.7546/crabs.2019.05.11

Cited by 5 publications

(2 citation statements)

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“…Тектонската обстановка на северното българско Черноморие е предпоставка за висока сеизмичност (Watsof, 1903;Dimitrov, Genov, 2004). Историческите източници съобщават за големи земетресения, случили се през Античността и Средновековието и предизвикали свлачища, каменопади, наводнения и цунами (Iliev, 1973;Dimitrov, Parlichev, 2014;Dimitrov et al, 2017;Evstatiev et al, 2021). Последните големи бедствия са свързани със земетресението от 1901 г. с I = IX степен по MSK, чийто епицентър е източно от нос Калиакра на дълбочина 8 km.…”

Section: геоложка характеристика на района на изследванеunclassified

“…Активни разломи от кватернера има и при град Шабла и нос Калиакра. Те са свързани със сеизмичната активност в тази част на брега (Parlichev, 2014;Dimitrov et al, 2017;Parlichev, Vasilev, 2021). Според "Карта за сеизмично райониране на Република България за 1000-годишен период" стойността на сеизмичния коефициент е 0,27.…”

Section: геоложка характеристика на района на изследванеunclassified

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Erosion of Coastal Slope in the Zelenka locality, Northern Black Sea Coast of Bulgaria

Nankin¹,

Krastanov²,

Ivanov³

2022

Eng. Geol. and Hydrogeol.

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The study covers a coastal slope along the northern Bulgarian Black Sea coast near Cape Kaliakra, Zelenka locality. The slope is composed of Miocene (Sarmatian), unconsolidated aragonite sediments with limestone interbeds (Topola Formation) and a steep limestone rock ridge (Karvuna Formation). Water flows along the surface of the slope, attached to the karstified and cracked limestones of the two formations. An assessment was made of the material eroded from the slope, composed of aragonite sediments of the Topola Formation, for the period from September 2018 to October 2022. The quantities of this material were measured and laboratory tests of the aragonite sediments were carried out. Their classification characteristics have been determined - grain size composition and plasticity index. Geotechnical studies and mapping of the coastal slope showed that erosion processes in the studied area represent a real geological hazard and can affect the stability of the slope, as well as the integrity of the road.

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Section: геоложка характеристика на района на изследванеunclassified

Erosion of Coastal Slope in the Zelenka locality, Northern Black Sea Coast of Bulgaria

Nankin¹,

Krastanov²,

Ivanov³

2022

Eng. Geol. and Hydrogeol.

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Seabed Forms and Substrate Mapping of the Chernomorets Coastal Sector, Bulgarian Black Sea

Trendafilova

Dechev

2022

SGEM International Multidisciplinary Scientific GeoConference� EXPO Proceedings

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The intensive development of remote sensing in the marine environment provides excellent bathymetric and substrate mapping opportunities on the southern Bulgarian Black Sea coast. The Bay of Chernomorets is a perfect opportunity to combine data from single-beam sonar, multi-beam sounding and drone imaging for the purpose of seabedforms and substrate mapping. This paper presents the second stages activity of the Project �Multidisciplinary study of Burgas Bay � MidBay. (Composition of a detailed digital model of the bottom relief with analysis of modern geomorphological conditions and archaeological forecasting modelling)� with a scientific goal of creating a substrate map and identification of seabed forms. The studied bay is strongly anthropogenically modified by the port in its southern part. In recent years, systematic studies of the landform changes have shown that the seabedforms, the beach and the shallowest part up to 2 meters in depth have changed. This is the main reason for choosing a solution that allows the 3D reconstruction of a coastal sector of Chernomorets. One of the purposes of the publication is to review the research through echo sounders and unmanned aerial systems along the Bulgarian Black Sea coast and analyse the methodology, equipment, and results obtained. The main task is to use good practices and successful methodology to combine echo-sounding and UAV surveys to derive a modern digital model of the terrain and raster data for the Bay of Chernomorets. Additionally, the process follows the good practices of using UAV and Sonar raster mosaic to detect borders between lithological varieties. The article aims to map seabed substrates in Folk 5 Classes and evaluate the accuracy of UAV-based DSMs, high-resolution orthomosaics and singlebeam echo sounding, which are fundamental for studying the most dynamic coastal landforms along the Bulgarian Black Sea coast.

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Updated Digital Bathymetric Model of Pomorie and Burgas Bay, Bulgarian Black Sea

Trendafilova

Dechev

2022

22nd SGEM International Multidisciplinary Scientific GeoConference Proceedings 2022, Informatics, Geoinformatics and Remote Sen

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Recently, the echosounder systems in the Bulgarian Black Sea shelf have become a standard method of seabed exploration. The paper presents the present-day field activity of bathymetric research, which revised available hydrographic data for the seabed. The study aims to combine and update archival bathymetric data from contemporary multibeam echo-sounding scanning and archive single-beam data. This work presents activity in the second stage of Project �Multidisciplinary study of Burgas Bay � MidBay. (Composition of a detailed digital model of the bottom relief with analysis of modern geomorphological conditions and archaeological forecasting modelling)� with a primary scientific goal to create an overall bathymetric model of the Burgas and Pomorie bays. The studied bay is strongly anthropogenically modified by the port in its southern part. The reconstruction of seafloor topography will allow the detection of substrate varieties and the identification of contemporary geomorphological bedforms and processes. A historical review of hydrographic research and geo base database was created for the seabed of the Bulgarian coastal zone in support of this study with different-year bathymetric surveys. The used data consolidate sonar mosaics, single beam, multibeam bathymetric data and raster satellite images, processed in PDS 2000, SonarWiz, and GIS environment. The coverage and density of the bathymetric data allowed the generation of a seabed digital bathymetric model with a horizontal resolution of 11 m. In addition, a bathymetric map with an interval of 0.5 m was created with high accuracy. Such a high-resolution model is an important advance in the highresolution mapping of the Bulgarian Black Sea coastal zone.

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Seabed Mapping of the Bulgarian Coastal Zone between Sozopol and Tsarevo (Southern Bulgarian Black Sea)

Cited by 5 publications

References 0 publications

Erosion of Coastal Slope in the Zelenka locality, Northern Black Sea Coast of Bulgaria

Erosion of Coastal Slope in the Zelenka locality, Northern Black Sea Coast of Bulgaria

Seabed Forms and Substrate Mapping of the Chernomorets Coastal Sector, Bulgarian Black Sea

Updated Digital Bathymetric Model of Pomorie and Burgas Bay, Bulgarian Black Sea

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