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Dissertations / Theses on the topic 'Side scan sonars'

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Published: 4 June 2021

Last updated: 1 February 2022

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1

Le, Bas Timothy P. "Processing techniques for TOBI side-scan sonar data." Thesis, University of Reading, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360112.

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2

Beattie, Robert Scott. "Side scan sonar image formation, restoration and modelling." Thesis, Robert Gordon University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318551.

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3

Ulloa, Marco Julio. "Side-scan sonar observations of upper ocean processes." Thesis, University of Southampton, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.400484.

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4

Mignotte, Pierre-Yves. "Content-based registration of side-scan sonar images." Thesis, Heriot-Watt University, 2008. http://hdl.handle.net/10399/2189.

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This thesis is devoted to the image registration problem of multi-modal images with applications to underwater imagery. With the advent of Autonomous Underwater Vehicles, high resolution images of the seabed can be routinely acquired. However, the relative short range of the sensors implies that a mosaicing process is necessary to produce large scale maps.

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Fox, Peter. "An electronically focused multiple beam side scan sonar." Doctoral thesis, University of Cape Town, 1985. http://hdl.handle.net/11427/26521.

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Phased arrays have been in use since World War II but their commercial application has been constrained by the bulk and cost of the beam forming system. High resolution side scan sonar systems have many operational parameters that may only be extended with the aid of phased arrays, the resolution and the imaging rate being the most important. This thesis describes a microprocessor controlled dynamically focused side scan sonar where high resolution and high image acquisition rates are achieved. Dynamic focusing prevents the depth of field limitations of fixed focus arrays by updating the array

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Högberg, Lennarth. "Det dolda kulturlandskapet : Okända fartygslämningar i vår närmiljö." Thesis, Uppsala universitet, Institutionen för arkeologi och antik historia, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-452755.

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Along Sweden’s east coast there are thousands of well-preserved shipwrecks after an extensive shipping that stretches far back in history. The Baltic Sea is a unique sea in the sense that the ship worm Teredo Navalis cannot live here, which means that the ship’s timber is well preserved under water. But we have little knowledge how many these wrecks are and where they are located. No comprehensive underwater inventory like those made on land has even been made. Therefore, these shipwrecks are threatened with destruction by our ignorance of them. By scanning water areas in our immediate environ

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Ling, Li. "Local Feature Correspondence on Side-Scan Sonar Seafloor Images." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-291803.

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In underwater environments, the perception and navigation systems are heavily dependent on the acoustic wave based sonar technology. Side-scan sonar (SSS) provides high-resolution, photo-realistic images of the seafloor at a relatively cheap price. These images could be considered potential candidates for place recognition and navigation of autonomous underwater vehicles (AUVs). Local feature correspondence matching, or the detection, description and matching of keypoints in overlapping images is a necessary building block for AUV navigation. Recent deep learning based research has resulted in

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8

Hamill, Daniel. "Quantifying Riverbed Sediment Using Recreational-Grade Side Scan Sonar." DigitalCommons@USU, 2017. https://digitalcommons.usu.edu/etd/6635.

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The size and organization of bed material, bed texture, is a fundamental attribute of channels and is one component of the physical habitat of aquatic ecosystems. Multiple discipline-specific definitions of texture exist and there is not a universally accepted metric(s) to quantify the spectrum of possible bed textures found in aquatic environments. Moreover, metrics to describe texture are strictly statistical. Recreational-grade side scan sonar systems now offer the possibility of imaging submerged riverbed sediment at resolutions potentially sufficient to identify subtle changes in bed text

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9

Xie, Yiping. "Machine Learning for Inferring Depth from Side-scan Sonar Images." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264835.

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Underwater navigation using Autonomous Underwater Vehicles (AUVs), which is significant for marine science research, highly depends on the acoustic method, sonar. Typically, AUVsare equipped with side-scan sonars and multibeam sonars at the same time since they both have their advantages and limitations. Side-scan sonars have a much wider range than multibeamsonars and at the same time are much cheaper, yet they could not provide accurate depth measurements. This thesis is aiming at investigating if a machine-interpreted method could beused to translate side-scan sonar data to multibeam data w

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10

Humber, Stuart Richard. "High resolution side-scan sonar imaging of coral reefs in the Seychelles." Thesis, Imperial College London, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.408036.

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11

Cure, Marcel Serge. "Langmuir circulation : a side-scan sonar study of mixing in Loch Ness." Thesis, University of Southampton, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240617.

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12

Maddox, Donald Shea. "Sonar imaging of bay bottom sediments and anthropogenic impacts in Galveston Bay, Texas." Texas A&M University, 2005. http://hdl.handle.net/1969.1/4896.

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Knowledge of surface sediment distribution in Galveston Bay is important because it allows us to better understand how the bay works and how human activities impact the bay and its ecosystems. In this project, six areas of bay bottom were surveyed using acoustic techniques to make maps of bay bottom types and to investigate the types and extent of anthropogenic impacts. A total of 31 km2 was surveyed in six areas, one in Bolivar Roads (6.1 km2), one near Redfish Bar (3.1 km2), two in East Bay (12 km2), one southeast of the Clear Lake entrance (5.3 km2), and one in Trinity Bay (4.3 km2). Sidesc

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13

Lawlor, Michael Andrew. "A real-time parallel processing system for synthetic aperture sonar." Thesis, University of Newcastle Upon Tyne, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360273.

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14

Lafferty, Bernie. "An underlying geophysical investigation of the evolution of the Lower Lough Erne Basin, Northern Ireland." Thesis, University of Ulster, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.274098.

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15

Healy, Carrie. "Detecting Submerged Remains: Controlled Research Using Side-Scan Sonar to Detect Proxy Cadavers." Master's thesis, University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5296.

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While side-scan sonar has become a valuable geophysical tool for forensic water searches, controlled research is paramount to determine the best practices for searches in aquatic environments as it provides a structured environment in which to investigate variables that influence the effectiveness of the technology and provides valuable experience for sonar operators. The purpose of this research is to conduct controlled research in order to evaluate the applicability of side-scan sonar to searches involving submerged firearms and proxy cadavers. In addition, the best practices for employing t

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Dura, Martinez Esther. "Reconstruction and classification of man-made objects and textured seafloors from side-scan sonar images." Thesis, Heriot-Watt University, 2002. http://hdl.handle.net/10399/409.

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Hugget, Quentin J. "Small-scale sedimentary features in the deep ocean and their effect on side-scan sonar images." Thesis, University of Reading, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278238.

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18

Noll, Christian John IV. "A high resolution geophysical investigation of spatial sedimentary processes in a paraglacial turbid outwash fjord: Simpson Bay, Prince William Sound, Alaska." Texas A&M University, 2005. http://hdl.handle.net/1969.1/3267.

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Simpson Bay is a turbid, outwash fjord located in northeastern Prince William Sound, Alaska. A high ratio of watershead:basin surface area combined with high precipitation and an easily erodable catchment create high sediment inputs. Fresh water from heavy precipitation and meltwater from high alpine glaciers enter Simpson Bay through bay head rivers and small shoreline creeks that drain the catchment. Side scan sonar, seismic profiling, and high resolution bathymetry were used to investigate the record of modern sedimentary processes. Four bottom types and two seismic faces were described to

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19

Silva, Cristiane Ferreira da. "Comparação de dois métodos geofísicos acústicos no mapeamento de fundos submersos: estudo de caso no Mar de Cananéia, Sistema estuarino de Cananéia-Iguape (SP)." Universidade do Estado do Rio de Janeiro, 2011. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=2661.

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Fundação Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro<br>Os estuários são ambientes altamente dinâmicos e concentram a maior parte da população mundial em seu entorno. São ambientes complexos que necessitam de uma gama de estudos. Nesse contexto, este trabalho visa contribuir para o entendimento dos estuários lagunares, tendo como objetivo comparar duas ferramentas geofísicas acústicas no mapeamento de uma porção submersa do Mar de Cananéia que está inserido no Sistema Estuarino Lagunar de Cananéia-Iguape (SP). Os equipamentos utilizados nesta pesquisa são o Sonar de Va

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20

Terhorst, Andrew. "The seafloor environment off Simon's Town in False Bay revealed by side-scan sonar, bottom sampling, diver observations and underwater photography." Thesis, University of Cape Town, 1987. http://hdl.handle.net/11427/23808.

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21

De, Beukelaer Sophie Magdalena. "Remote sensing analysis of natural oil and gas seeps on the continental slope of the northern Gulf of Mexico." Thesis, Texas A&M University, 2003. http://hdl.handle.net/1969.1/1164.

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Natural hydrocarbon seeps harbor distinctive geological, chemical, and biological features in the marine environment. This thesis verified remote sensing signatures of seeps using in-situ observation and repeated collections of satellite imagery. Bubble streams in the Gulf of Mexico water column from four natural seep sites on the upper continental slope were imaged by a side-scan sonar, which was operated from a submarine near the seafloor, and by acoustic profilers, which were operated from surface ships. These data were correlated with sea surface slicks imaged by Synthetic Aperture Rada

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Brice, Caitlin E. "The Detection of Amazonian Manatees (Trichechus inunguis) Using Side-Scan Sonar and the Effect of Oil Activities on Their Habitats in Eastern Ecuador." NSUWorks, 2014. http://nsuworks.nova.edu/occ_stuetd/8.

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Substantial hunting pressure and habitat destruction caused by oil extraction has critically endangered the Amazonian manatee in Ecuador. The current population status is unknown because an effective method to observe them in the wild has yet to be developed. This study explored whether the Amazonian manatee persists or has been extirpated in the eastern Ecuadorian Amazon utilizing side-scan sonar to increase odds of detection. Spatial differences in probability of detection were quantified if manatees were observed. The level of chemical contamination was determined and compared spatially and

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Soares, Camila Hyslava Campos. "An?lise hidrodin?mica e morfodin?mica do complexo estuarino do Rio Piranhas-A?u/RN, Nordeste do Brasil." Universidade Federal do Rio Grande do Norte, 2012. http://repositorio.ufrn.br:8080/jspui/handle/123456789/18827.

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Made available in DSpace on 2015-03-13T17:08:34Z (GMT). No. of bitstreams: 1 CamilaHCS_DISSERT.pdf: 5199158 bytes, checksum: 3fe566edfdb484ed92ea990061bd1ccd (MD5) Previous issue date: 2012-02-28<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior<br>The aim of this study was the seasonal characterization of the morphology, sedimentology and hydrodynamic of the A?u, Cavalos and Conchas estuaries. These estuaries are inserted in a semi-arid climate area and form the mouth of the hydrographic basin of the Piranhas-A?u river, that represent the discharge of the largest watershed in t

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24

Baraldo, Kleber Barrionuevo. "Caracterização e comparação dos estuários dos rios Itaguaré e Guaratuba (Bertioga, SP) com base nos parâmetros geo-físico-químicos, batimetria e imageamento do fundo /." São Vicente, 2018. http://hdl.handle.net/11449/154810.

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Orientador: Francisco Sekiguchi de Carvalho e Buchmann<br>Resumo: Estuários são ambientes heterogêneos, altamente complexos, e condicionados por diversos fatores ambientais. Nenhum estuário é igual a outro, e é esta diversidade que os torna tão importantes do ponto de vista da conservação. A grande quantidade de recursos naturais disponíveis nesses ambientes favorece o desenvolvimento de assentamentos urbanos nas suas margens, podendo comprometer o equilíbrio natural. A partir do conhecimento detalhado dos sistemas estuarinos é possível traçar metas assertivas para a conservação e gestão deste

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Miller, Jacob William. "Utility of Macrophyte Habitat for Juvenile Fishes: Contrasting Use in Turbid and Clearwater Conditions of Maumee Bay, Lake Erie." Bowling Green State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1434633926.

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Lucas, Joseph S. "CONSERVATION LIMNOGEOLOGY AND BENTHIC HABITAT MAPPING IN CENTRAL LAKE TANGANYIKA (TANZANIA)." UKnowledge, 2018. https://uknowledge.uky.edu/ees_etds/60.

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Small scale protected zones are valuable for helping the health and productivity of fisheries at Lake Tanganyika (East Africa). Spatial placement of protected areas relies on accurate maps of benthic habitats, consisting of detailed bathymetry data and information on lake-floor substrates. This information is unknown for most of Lake Tanganyika. Fish diversity is known to correlate with rocky substrates in ≤ 30 m water depth, which provide spawning grounds for littoral and pelagic species. These benthic habitats form important targets for protected areas, if they can be precisely located. At t

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Tabosa, Werner Farkatt. "Monitoramento costeiro das praias de S?o Bento do Norte e Cai?ara do Norte RN: implica??es para o p?lo petrol?fero de Guamar?" Universidade Federal do Rio Grande do Norte, 2002. http://repositorio.ufrn.br:8080/jspui/handle/123456789/18820.

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Made available in DSpace on 2015-03-13T17:08:32Z (GMT). No. of bitstreams: 1 WernerFT.pdf: 4981794 bytes, checksum: 659d4c7e2270b32fa3929a5b6a5ab459 (MD5) Previous issue date: 2002-02-26<br>This dissertation the results of a research developed in the area of S?o Bento do Norte and Cai?ara do Norte, northern coast of the State of Rio Grande do Norte, during the period of June of 2000 to August of 2001, in the ambit of the projects MAMBMAR? (CNPq/CTPETRO) and PROBRAL (CAPES/DAAD).The objective principal of this research was the characterization of the sedimentary dynamics of this coast, with b

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Hassoun, Virginie. "Analyse multi-échelles des déstabilisations sous-marines de la Marge Ligure : implications sur la répartition spatio-temporelle des facteurs déclenchant [sic]." Thesis, Nice, 2014. http://www.theses.fr/2014NICE4069.

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La marge Ligure est une marge passive soumise à une déformation tectonique compressive associée à la tectonique salifère messinienne. La reprise en compression de la marge s’accompagne d’une sismicité modérée récurrente ponctuée d’évènements plus forts. La marge Ligure est le siège d’une sédimentation importante au Plio-Quaternaire. Elle constitue un environnement propice à l’étude des déstabilisations gravitaires. L’objectif principal de ce travail était de décrire et caractériser les principaux mouvements en masse ayant affecté la marge continentale Ligure au cours du Plio-Quaternaire, de lo

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Coste, Marianne. "Les processus sédimentaires, depuis la pente continentale jusqu'au bassin, en contexte de tectonique active : analyse comparée entre la Marge Calabro-Ionienne et la Marge Ligure durant les derniers 5 Ma." Phd thesis, Université Nice Sophia Antipolis, 2014. http://tel.archives-ouvertes.fr/tel-01062293.

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Les marges continentales, passives ou actives, sont la principale voie de transfert sédimentaire entre le plateau continental et le bassin océanique profond et les plaines abyssales. Les pentes continentales sont le siège de processus d'érosion/dépôt sous le contrôle de transfert de flux particulaires continentaux chenalisés par des structures érosives, telles que les canyons sous‐marins, puis redistribues à l'ensemble de la marge. Les canyons érodent fortement les pentes continentales et contribuent à l'évolution de leur morphologie au cours du temps. On retrouve cependant des canyons sous‐ma

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Tsai, Szu-Liang, and 蔡思亮. "Design of a Side-Scan Sonar Simulation Platform." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/51831024596898630972.

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碩士<br>國立臺灣大學<br>工程科學及海洋工程學研究所<br>96<br>This work presents the development of a side-scan sonar images simulator by considering the image formation processes of a side-scan sonar acoustic model and properties of terrain. The simulator involved acoustic propagation through the water medium, seabed scattering and towfish motion characteristics. Synthetic images are obtained by applying the bistatic scattering model. The seabed is generated using the fractal theory and the terrain is represented as a random fractal terrain. The outcome of the simulator has two aspects: the synthetic side-scan sona

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31

Nicholson, John William. "Registration and variability of side scan sonar imagery." Thesis, 1988. http://hdl.handle.net/10945/23377.

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Tsai, Szu-Liang. "Design of a Side-Scan Sonar Simulation Platform." 2008. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-2901200816535600.

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Li, Ying-Zhang, and 李英璋. "Automatic Recognition of Artificial Objects in Side-scan Sonar Imerage." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/07571852119718341924.

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碩士<br>國立中山大學<br>海洋環境及工程學系研究所<br>99<br>Abstract The interpretation and identification of information from the side-scan sonar imagery are mainly depended on visual observation and personal experiences. Recent studies tended to increase the identification efficiency by using numerical analysis methods. This can reduce the error that cause by the differences of observer’s experience as well as by extended time observation. The position around the center line of the slant range corrected side-scan sonar imagery might result in the degradation of the ability of numerical methods to successfully de

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"Estimation and correction of geometric distortions in side-scan sonar images." Research Laboratory of Electronics, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/4196.

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Daniel T. Cobra.<br>Also issued as Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1990.<br>Includes bibliographical references (p. 137-141).<br>Supported in part by the Defense Advanced Research Projects Agency monitored by the Office of Naval Research. N00014-89-J-1489 Supported in part by the National Science Foundation. MIP-87-14969 Supported in part by Lockheed Sanders, Inc.

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SU, CHIA-FU, and 蘇加富. "An Adaptive Blind Zone Detection Algorithm for Side Scan Sonar Images." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/7mk2mu.

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碩士<br>國立高雄應用科技大學<br>電子工程系<br>106<br>Side scan sonar system is a acoustic explorer, widely applied below underwater. Because of receiving unvaild data before the first bottom return, it generates blind zone in the side scan sonar image. It’s the disadvantage for auto underwater target detection and image analysis. Correct blind zone detection can remove unnecessary noise, increase the efficiency of image analysis. Accuracy in the current method of blind zone detection is easily affected by seabed topography and interference of echo. Moreover, it relies on assisted detection by people. It not on

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Chen, Jhao-Ru, and 陳昭儒. "The Study of Side-Scan Sonar Image for Sea Bed Propreties." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/90347121871875566047.

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碩士<br>國立臺灣大學<br>海洋研究所<br>97<br>In this study, side-scan signals were displayed as sonograph, and different morphological images were classified using digital image processing methods. The data of side-scan sonar image was collected in the project of “Disposal plan of the Keelung Harbor dredging material” in June and October 2007, respectively. Two kinds of method to analysis image are: Wavelet Packet Feature (WPF) and Gray Level Co-occurrence Matrix (GLCM). WPF constructs the signals into seven bands to calculate their respective statistics, and each morphological feature poses their represent

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Yan, Shyh-Bin, and 顏世濱. "Application of side-scan sonar in mapping seabed morphology and coral reefs off LIU-CHIEU YÜ." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/41350462418560114995.

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碩士<br>國立中山大學<br>海洋環境及工程學系研究所<br>92<br>About the investigation method of the present situation of coral reef at present, the main choice is scuba diving investigation no matter domestic and foreign countries. Take the coral reef of physical examination in Taiwan as example, divers use transects as basic methods to calculate the coverage rate of coral reef and characteristic of the seabed environment and to survey specific fish and quantity of the invertebrate in order to judge the influence that the human activity causes to the coral reef. In above-mentioned methods can really make full and acc

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Chen, Yi-Wei, and 陳益緯. "The application of acoustic seafloor habitat mapping using side-scan sonar image: The seafloor habitat and topography between Taiwan and Penghu Island." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/38907824544983142726.

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碩士<br>國立臺灣大學<br>海洋研究所<br>99<br>In order to objectively analyze side-scan sonar image, we use SwathView which produced by QTC in Canada to process acoustic classification. We also use SwathView to analyze the data of area between Taiwan and Penghu Island. The main feature of SwathView is segmentation method; it combines many statistic algorithms and is useful to process large dataset. Every data has its own acoustic property; we classify the data which has the same acoustic property as one class and the others are so on. Firstly, we load each file and compensate it. Secondly, we segment sonar i

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Φακίρης, Ηλίας. "Ανάπτυξη λογισμικών επεξεργασίας και ανάλυσης γεωφυσικών δεδομένων. Εφαρμογές στον Κορινθιακό κόλπο, στο Αιγαίο και στο Ιόνιο πέλαγος". Thesis, 2012. http://hdl.handle.net/10889/5885.

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Η παρούσα διδακτορική διατριβή αποτελεί ένα συνδυαστικό ερευνητικό προϊόν που στοιχειοθετείται από την ανάπτυξη υπολογιστικών εργαλείων επεξεργασίας και ανάλυσης θαλάσσιων γεωφυσικών δεδομένων και την εφαρμογή τους σε πρωτογενή δεδομένα, συλλεγμένα από το Εργαστήριο Θαλάσσιας Γεωλογίας και Φυσικής Ωκεανογραφίας (Ε.ΘΑ.ΓΕ.Φ.Ω) του πανεπιστημίου Πατρών, κατά το διάστημα 2005 – 2011. Τα πεδία στα οποία συγκεντρώνεται το κέντρο βάρους της διατριβής είναι: 1) τα συστήματα ακουστικής ταξινόμησης πυθμένα και 2) η χαρτογράφηση και παραμετροποίηση εμφανίσεων των πολύ σημαντικών θαλάσσιων ενδιαιτημάτων τ

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Gonzalez-Socoloske, Daniel. "Aspects of the Feeding Ecology of the Antillean Manatee (Trichechus manatus manatus) in the Wetlands of Tabasco, Mexico." Diss., 2013. http://hdl.handle.net/10161/7100.

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<p>Manatees (Mammalia: Sirenia), along with the closely related dugongs, are the only herbivorous marine mammals. Manatees consume a wide variety of vascular plants and algae in both marine and freshwater habitats. However, little is known about what characteristics influence diet and food selectivity, especially in freshwater habitats, which represent a large portion of the available habitat for the endangered Antillean manatee, <italic>Trichechus manatus manatus</italic>, in Central and South America. Understanding foraging ecology is an important element of effective conservation strategies

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Σταματοπούλου, Ελένη. "Αποτύπωση λειμώνων P.oceanica και ασβεστιτικών ροδοφυκών (Coralligene Formations) με χρήση ηχοβολιστικών μεθόδων στην περιοχή Ελαφονήσου-Νεάπολης". Thesis, 2015. http://hdl.handle.net/10889/8706.

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Η παρούσα εργασία εκπονήθηκε στα πλαίσια του Διατμηματικού Προγράμματος Μεταπτυχιακών σπουδών στις περιβαλλοντικές Επιστήμες. Οι θαλάσσιες γεωφυσικές έρευνες εκτελέστηκαν από το Εργαστήριο Θαλάσσιας Γεωλογίας και Φυσικής Ωκεανογραφίας (Ε.ΘΑ.ΓΕ.Φ.Ω) του Τμήματος Γεωλογίας του Πανεπιστημίου Πατρών. Οι έρευνες του Οκτωβρίου του 2011 αποτελούν συνέχεια αυτών του Οκτωβρίου του 2010 με σκοπό να καλυφθεί το σύνολο της θαλάσσιας περιοχής για την οποία υπάρχει αδειοδότηση. Αντικείμενο της έρευνας είναι η γεωφυσική διασκόπηση του πυθμένα με τη χρήση ηχοβολιστή πλευρικής σάρωσης (side scan sonar) στις πε

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Παπακωνσταντίνου, Μαρία. "Ηχοβολιστική αποτύπωση του αναγλύφου του πυθμένα και διερεύνηση της οικολογικής κατάστασης της λιμνοθάλασσας Γιάλοβας, Ν. Μεσσηνίας, καθώς και ψηφιακή χαρτογράφηση των καλύψεων/ χρήσεων γης στην ευρύτερη προστατευόμενη περιοχή". Thesis, 2013. http://hdl.handle.net/10889/8202.

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Στα πλαίσια της παρούσας έρευνας, μελετήθηκε η προστατευόμενη περιοχή του Οικολογικού Δικτύου Natura 2000: «Λιμνοθάλασσα Πύλου (Διβάρι), Νήσος Σφακτηρία, Αγ. Δημήτριος» με κωδικό GR2550004. Διεξάχθηκαν δύο εποχικές δειγματοληψίες, στις 31 Αυγούστου του 2012 και στις 21 Απριλίου του 2013. Η λιμνοθάλασσα της Γιάλοβας έχει έκταση περίπου 2,5 Km2, μέγιστο βάθος 1 m και επικοινωνεί με τον κόλπο του Ναυαρίνου μέσω ενός τεχνητού διαύλου. Αρχικά, πραγματοποιήθηκε η ηχοβολιστική αποτύπωση του πυθμένα, με χρήση ηχοβολιστή πλευρικής σάρωσης (Side Scan Sonar, SSS) με σκοπό να αποκαλυφθεί, τόσο η μορφολογί

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Παπαδάκης, Εμμανουήλ. "Ανάλυση περιβαλλοντικών παραμέτρων της λιμνοθάλασσας Καϊάφα σε περιβάλλον G.I.S". Thesis, 2007. http://nemertes.lis.upatras.gr/jspui/handle/10889/548.

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Η περιοχή μελέτης είναι η λιμνοθάλασσα Καϊάφα.Η μελέτη αυτή βασίστηκε στη συλλογή και ανάλυση γεωφυσικών δεδομένων, στην ανάλυση πυρήνων ιζήματος καθώς και σε μικροβιολογική ανάλυση δειγμάτων νερού της λιμνοθάλασσας. Τέλος ελήφθησαν δείγματα υδρόβιων φυτών από τον πυθμένα της λιμνοθάλασσας για τον έλεγχο των γεωφυσικών δεδομένων. Η γεωφυσική έρευνα-δειγματοληψία και η κοκκομετρική ανάλυση έδειξαν δυο περιοχές στον πυθμένα με διαφορετική κοκκομετρική σύσταση (αμμώδης-ιλυώδης πυθμένας) και διαφορετική βλάστηση (Chara hispida f. corfuensis και Potamogeton pectinatus). Επίσης χαρτογραφήθηκαν πε

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Κάτσου, Ευγενία. "Αποτύπωση υποθαλάσσιων πολιτιστικών στοιχείων και βιολογικών πόρων στην παράκτια ζώνη της νήσου Λέρου". Thesis, 2013. http://hdl.handle.net/10889/6184.

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Η παρούσα μεταπτυχιακή διατριβή επικεντρώνεται στην μελέτη της παράκτιας ζώνης της νήσου Λέρου στο Νοτιοανατολικό Αιγαίο, παρουσιάζοντας τα αποτελέσματα της ερμηνείας των γεωφυσικών στοιχείων που συλλέχθηκαν από το Εργαστήριο Θαλάσσιας Γεωλογίας και Φυσικής Ωκεανογραφίας (Ε.ΘΑ.ΓΕ.Φ.Ω.) τον Ιούνιο του 2011. Η έρευνα φιλοδοξεί να συνεισφέρει στην ανάδειξη της υποθαλάσσιας πολιτιστικής και φυσικής κληρονομιάς του νησιού, καθώς η συλλογή, επεξεργασία και ερμηνεία του συνόλου των δεδομένων επέτρεψε την αναγνώριση και την λεπτομερή χαρτογράφηση υποθαλάσσιων στόχων μεγάλης ιστορικής και περιβαλλοντι

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