Pub Date : 2014-05-27DOI: 10.1109/BALTIC.2014.6887840
G. Gogoberidze, L. Karlin, V. Abramov, J. Lednova
Usage the method of Human Impact Assessment (HIA) for estimation of coastal local municipalities allows evaluating the nature-ecological state / environmental situation of coastal local municipality, given an opportunity to show the hierarchy of municipalities and determining the HIA, vulnerability and opportunity for their future development. In the paper, the indicator method of HIA for estimation of coastal local municipalities and their main assumptions are formulated. Due to the HIA analysis, the list of factors of estimation of the nature-ecological state / environmental situation of coastal local municipality was obtained. For each selected factor the method of indicator value calculation, as well as computation of value of the integrative indicator of the nature-ecological state for coastal local municipality (or HIA estimation value for coastal local municipalities) as average of indicators, is proposed. Application of the method is considered for coastal local municipalities of the Leningrad Oblast and St. Petersburg. Based on the indicators and integrative indicator values the recommendations to reduction of human impact for coastal local municipalities are made.
{"title":"Indicator method of estimation of human impact assessment for coastal local municipalities","authors":"G. Gogoberidze, L. Karlin, V. Abramov, J. Lednova","doi":"10.1109/BALTIC.2014.6887840","DOIUrl":"https://doi.org/10.1109/BALTIC.2014.6887840","url":null,"abstract":"Usage the method of Human Impact Assessment (HIA) for estimation of coastal local municipalities allows evaluating the nature-ecological state / environmental situation of coastal local municipality, given an opportunity to show the hierarchy of municipalities and determining the HIA, vulnerability and opportunity for their future development. In the paper, the indicator method of HIA for estimation of coastal local municipalities and their main assumptions are formulated. Due to the HIA analysis, the list of factors of estimation of the nature-ecological state / environmental situation of coastal local municipality was obtained. For each selected factor the method of indicator value calculation, as well as computation of value of the integrative indicator of the nature-ecological state for coastal local municipality (or HIA estimation value for coastal local municipalities) as average of indicators, is proposed. Application of the method is considered for coastal local municipalities of the Leningrad Oblast and St. Petersburg. Based on the indicators and integrative indicator values the recommendations to reduction of human impact for coastal local municipalities are made.","PeriodicalId":435850,"journal":{"name":"2014 IEEE/OES Baltic International Symposium (BALTIC)","volume":"214 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124197886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-27DOI: 10.1109/BALTIC.2014.6887860
G. Gic-Grusza, A. Dudkowska
Wind wave-induced sediment transport is an important process affecting coastal seabed changes and coastline evolution. During this research a numerical system was developed to predict general morphodynamical conditions in the coastal zone of polish marine areas. Wind-wave fields were determined on the basis of a spectral models (WAM and SWAN models). Simulations were performed for 80 distinct wind cases. Subsequently for each individual case the regional longshore load of sediments was calculated using Engelund-Hansen and Meyer-Peter and Müller formule. As the result the values of sediment transport for main wind directions and velocities are presented. The objective of this paper is to present complex approach to the modeling of sediment transport in a coastal zone.
{"title":"Modeling of wind wave induced sediment transport in the coastal zone of polish marine areas (Southern Baltic)","authors":"G. Gic-Grusza, A. Dudkowska","doi":"10.1109/BALTIC.2014.6887860","DOIUrl":"https://doi.org/10.1109/BALTIC.2014.6887860","url":null,"abstract":"Wind wave-induced sediment transport is an important process affecting coastal seabed changes and coastline evolution. During this research a numerical system was developed to predict general morphodynamical conditions in the coastal zone of polish marine areas. Wind-wave fields were determined on the basis of a spectral models (WAM and SWAN models). Simulations were performed for 80 distinct wind cases. Subsequently for each individual case the regional longshore load of sediments was calculated using Engelund-Hansen and Meyer-Peter and Müller formule. As the result the values of sediment transport for main wind directions and velocities are presented. The objective of this paper is to present complex approach to the modeling of sediment transport in a coastal zone.","PeriodicalId":435850,"journal":{"name":"2014 IEEE/OES Baltic International Symposium (BALTIC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130397620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-27DOI: 10.1109/BALTIC.2014.6887844
M. Lilover, L. Talpsepp
The aim of this study was to determine the depths which were most influenced by low-frequency motions and to reveal the processes behind the observed distribution of kinetic energy. The long term records of five bottom-mounted ADCP deployed along the Gulf of Finland (GoF) in different regions were studied. Two ADCP of five were deployed along the thalweg of the gulf at the same time period (winter 2011/2012) while the remaining three were located closer to the southern coastal slope of the GoF. Those ADCP were deployed at different time periods. It was found that in many cases the low-frequency oscillation of currents, not found in the surface layer, was a dominating phenomenon below the pycnocline. The maximum amplitudes of those motions were observed sometimes directly near the bottom and sometimes in the middle of the bottom layer (the layer below the pycnocline). Still there were also observed time periods when the low-frequency variability did not exist. The frequency of oscillations varied by region in the GoF and therefore the role of bottom topography in determination of the frequency of oscillations could be expected. Furthermore, a hypothesis that some of the observed low-frequency oscillations were bottom-trapped topographic waves was proposed. As a source of energy for these periodic processes the varying wind conditions were expected. Under the ice cover the current variability in the low-frequency range was not observed. For the comparison model results of bottom-trapped topographic waves for one region of the GoF were discussed. The vertical distribution of amplitudes of measured currents in some cases was similar to the modelled ones but in many cases a more complicated pattern was observed.
{"title":"On the vertical structure of the low-frequency oscillations of currents in the Gulf of Finland","authors":"M. Lilover, L. Talpsepp","doi":"10.1109/BALTIC.2014.6887844","DOIUrl":"https://doi.org/10.1109/BALTIC.2014.6887844","url":null,"abstract":"The aim of this study was to determine the depths which were most influenced by low-frequency motions and to reveal the processes behind the observed distribution of kinetic energy. The long term records of five bottom-mounted ADCP deployed along the Gulf of Finland (GoF) in different regions were studied. Two ADCP of five were deployed along the thalweg of the gulf at the same time period (winter 2011/2012) while the remaining three were located closer to the southern coastal slope of the GoF. Those ADCP were deployed at different time periods. It was found that in many cases the low-frequency oscillation of currents, not found in the surface layer, was a dominating phenomenon below the pycnocline. The maximum amplitudes of those motions were observed sometimes directly near the bottom and sometimes in the middle of the bottom layer (the layer below the pycnocline). Still there were also observed time periods when the low-frequency variability did not exist. The frequency of oscillations varied by region in the GoF and therefore the role of bottom topography in determination of the frequency of oscillations could be expected. Furthermore, a hypothesis that some of the observed low-frequency oscillations were bottom-trapped topographic waves was proposed. As a source of energy for these periodic processes the varying wind conditions were expected. Under the ice cover the current variability in the low-frequency range was not observed. For the comparison model results of bottom-trapped topographic waves for one region of the GoF were discussed. The vertical distribution of amplitudes of measured currents in some cases was similar to the modelled ones but in many cases a more complicated pattern was observed.","PeriodicalId":435850,"journal":{"name":"2014 IEEE/OES Baltic International Symposium (BALTIC)","volume":"35 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134360949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-27DOI: 10.1109/BALTIC.2014.6887858
H. Tõnisson, R. Aps, K. Orviku, U. Suursaar, S. Sasi, A. Kont
The current study was focusing on the shore processes and the coastal sea fronting Sillamäe town. The shores near the Sillamäe starting west from the Voka settlement and ending at the top of Cape Kannuka were described as one litho dynamic system with a good natural balance in the recent past. The main aim of the paper was to analyse the impact of a port establishment to the changes in the coastal evolution and sediment budget in the vicinity of Sillamäe town based on the regular monitoring results (9 different shore profiles - by using RTK-GPS or Leica level, repeated photographs in several locations, shoreline mapping - by using RTK-GPS or handheld GPS, scarp measurements - by using orthophotos and RTK-GPS). The results suggest that either a stable geomorphic state or a slow accumulation prevailed along major part of the studied coast. After stronger storms, occasional erosion events were registered in several sections of the study site. However, these changes were mostly temporary and a stable state was usually restored soon after the erosion event. Finally, we can conclude that the monitoring of shore processes from 2004-2013 has not registered any changes on the shores directly influenced from the new harbour. Major changes on the shores are caused by natural extreme events. The changes in shore processes resulted from these events are comparable to the ones registered in the other naturally developing sites in Estonia.
{"title":"The impact of a port to the surrounding shores based on the 10 years monitoring results: Port of Sillamäe case study (Gulf of Finland, Baltic Sea)","authors":"H. Tõnisson, R. Aps, K. Orviku, U. Suursaar, S. Sasi, A. Kont","doi":"10.1109/BALTIC.2014.6887858","DOIUrl":"https://doi.org/10.1109/BALTIC.2014.6887858","url":null,"abstract":"The current study was focusing on the shore processes and the coastal sea fronting Sillamäe town. The shores near the Sillamäe starting west from the Voka settlement and ending at the top of Cape Kannuka were described as one litho dynamic system with a good natural balance in the recent past. The main aim of the paper was to analyse the impact of a port establishment to the changes in the coastal evolution and sediment budget in the vicinity of Sillamäe town based on the regular monitoring results (9 different shore profiles - by using RTK-GPS or Leica level, repeated photographs in several locations, shoreline mapping - by using RTK-GPS or handheld GPS, scarp measurements - by using orthophotos and RTK-GPS). The results suggest that either a stable geomorphic state or a slow accumulation prevailed along major part of the studied coast. After stronger storms, occasional erosion events were registered in several sections of the study site. However, these changes were mostly temporary and a stable state was usually restored soon after the erosion event. Finally, we can conclude that the monitoring of shore processes from 2004-2013 has not registered any changes on the shores directly influenced from the new harbour. Major changes on the shores are caused by natural extreme events. The changes in shore processes resulted from these events are comparable to the ones registered in the other naturally developing sites in Estonia.","PeriodicalId":435850,"journal":{"name":"2014 IEEE/OES Baltic International Symposium (BALTIC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115605494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-27DOI: 10.1109/BALTIC.2014.6887866
S. Pogorzelski, A. Szczepańska
The characterization of wetting properties (by contact angles CA) of several undersea artificial (glass plates) and natural(stones, sand layers, soft-bottom structures, aquatic macrophytes, sediments) solid substrata in the Baltic Sea brackish water (Gulf of Gdansk) were performed. The apparent surface free energy γSV and other interfacial interaction parameters: 2D film pressure Π, workof adhesion WA, and of spreading WS; dispersive term γSVd of γSV were derived from CAH approach developed by Chibowski (2003)with only three measurable quantities: surface tension of the probe liquid γLV and its advancing □A and receding □R contact anglehysteresis (CAH = □A - □R). The most useful technique to measure in situ CAs giving reproducible and accurate values turned out acaptive bubble method, for fully hydrated interfacial layers of highly hydrophilic and porous nature met at seabed. Since the outermostsurface of the submerged substrate is sensed with the presented CA captive bubble technique (captive bubble syringe set-up + USBmicroscope system was assigned to field work), surface evolution of the formed biofilm structure can be monitored on-line and in-situ atdifferent stages of its formation from seconds (conditioning film) to weeks (macrofouling). In addition to surface free energy, otherfactors, including surface charge, surface roughness, temperature, contact time and fluid shear flow velocity turned out to havesignificant influence on the adhesion of biofouling. Views of the glass biofouled slides taken with confocal scanning laser microscopyallowed 3D biofilm architecture on glass to be visualized and quantified. The evolution of the wettability parameters allowed toindentify the particular biofilm states: best release properties, maximum organic matter accumulation, mature film dispersion. Thepresence of adsorbed organic matter layer lead to the surface hydrophobization (CA ↑, γSV ↓, WA ↓, WS more negative).
{"title":"On-line and in-situ kinetics studies of biofilm formation on solid marine submerged substrata by contact angle wettability and microscopic techniques","authors":"S. Pogorzelski, A. Szczepańska","doi":"10.1109/BALTIC.2014.6887866","DOIUrl":"https://doi.org/10.1109/BALTIC.2014.6887866","url":null,"abstract":"The characterization of wetting properties (by contact angles CA) of several undersea artificial (glass plates) and natural(stones, sand layers, soft-bottom structures, aquatic macrophytes, sediments) solid substrata in the Baltic Sea brackish water (Gulf of Gdansk) were performed. The apparent surface free energy γ<sub>SV</sub> and other interfacial interaction parameters: 2D film pressure Π, workof adhesion W<sub>A</sub>, and of spreading W<sub>S</sub>; dispersive term γ<sub>SV</sub><sup>d</sup> of γ<sub>SV</sub> were derived from CAH approach developed by Chibowski (2003)with only three measurable quantities: surface tension of the probe liquid γ<sub>LV</sub> and its advancing □<sub>A</sub> and receding □<sub>R</sub> contact anglehysteresis (CAH = □<sub>A</sub> - □<sub>R</sub>). The most useful technique to measure in situ CAs giving reproducible and accurate values turned out acaptive bubble method, for fully hydrated interfacial layers of highly hydrophilic and porous nature met at seabed. Since the outermostsurface of the submerged substrate is sensed with the presented CA captive bubble technique (captive bubble syringe set-up + USBmicroscope system was assigned to field work), surface evolution of the formed biofilm structure can be monitored on-line and in-situ atdifferent stages of its formation from seconds (conditioning film) to weeks (macrofouling). In addition to surface free energy, otherfactors, including surface charge, surface roughness, temperature, contact time and fluid shear flow velocity turned out to havesignificant influence on the adhesion of biofouling. Views of the glass biofouled slides taken with confocal scanning laser microscopyallowed 3D biofilm architecture on glass to be visualized and quantified. The evolution of the wettability parameters allowed toindentify the particular biofilm states: best release properties, maximum organic matter accumulation, mature film dispersion. Thepresence of adsorbed organic matter layer lead to the surface hydrophobization (CA ↑, γ<sub>SV</sub> ↓, W<sub>A</sub> ↓, W<sub>S</sub> more negative).","PeriodicalId":435850,"journal":{"name":"2014 IEEE/OES Baltic International Symposium (BALTIC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114943020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-27DOI: 10.1109/BALTIC.2014.6887890
E. Valalitis, L. Kelpšaitė, I. Bagdanavičiūtė, S. Gulbinskas
This paper analyses the shoreline and beach width changes over the time span 2012 04 05 to 2013 06 01 in Palanga recreational area. Analysis of the shoreline positions represented a tendency of the beach development in one year after beach nourishment. The initial measurements were made before beach nourishment in spring 2012, consecutive measurements were carried out once per month. Statistical approach for classification of the coast into dynamic sectors was integrated. According to calculations the shoreline moved inland by 15.2m in erosive sectors of Palanga beach, (total loss of the sediment at these sectors were 130m3). While 44m3 of sand were stored in the accumulative sectors where the shoreline moved by 16.1 m seaward.
{"title":"Short term shoreline changes after beach replenishment at the SE Baltic Sea","authors":"E. Valalitis, L. Kelpšaitė, I. Bagdanavičiūtė, S. Gulbinskas","doi":"10.1109/BALTIC.2014.6887890","DOIUrl":"https://doi.org/10.1109/BALTIC.2014.6887890","url":null,"abstract":"This paper analyses the shoreline and beach width changes over the time span 2012 04 05 to 2013 06 01 in Palanga recreational area. Analysis of the shoreline positions represented a tendency of the beach development in one year after beach nourishment. The initial measurements were made before beach nourishment in spring 2012, consecutive measurements were carried out once per month. Statistical approach for classification of the coast into dynamic sectors was integrated. According to calculations the shoreline moved inland by 15.2m in erosive sectors of Palanga beach, (total loss of the sediment at these sectors were 130m3). While 44m3 of sand were stored in the accumulative sectors where the shoreline moved by 16.1 m seaward.","PeriodicalId":435850,"journal":{"name":"2014 IEEE/OES Baltic International Symposium (BALTIC)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125589321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-27DOI: 10.1109/BALTIC.2014.6887863
M. Shilin, A. Chusov, J. Lednova, S. Kouzov
In frames of the monitoring of the "Nordstream" Project, in 2010-2013 the observations on the bird migrations and reproduction / nesting were carried out on the gas-pipeline corridor in the Russian sector of the Gulf of Finland (Baltic Sea). Migrations activity was studied in the coastal zone of Fiskar, Sommers, Nerva, Moschny, Seskar, Bolshoy and Maliy Tutters, and Gogland Islands and in Portovaja Bay on the northern coast of Gulf of Finland. Information about the nesting populations was collected during regular marshrout observations on these islands. It was found that the gas-pipeline construction did not effect the basic characteristics of functioning, dynamics and reproduction of the ornitocenosis in the Russian part of the Gulf of Finland. The disturbance factor was observed in the Portovaja Bay in form of decreasing of the number of nesting ducks. The rare and protected species of the ornitofauna are not affected by the pipeline construction. In the research area, the expansion of the cormorants and eiders was observed. It was shown that for the assessment of the pipeline influence on the ornitofauna only the species can be used which are ecologically connected with the water environment and the coastal zone biotopes. In this group there are the typical species of the marine Baltic fauna, and the species which are connected with freshwater lakes, but using the marine coastal zone as a place of relaxation and feeding during the migration period.
{"title":"Variety and vulnerability of waterbird community in the eastern part of the Gulf of Finland in the zone of «Nordstream» marine gas pipeline","authors":"M. Shilin, A. Chusov, J. Lednova, S. Kouzov","doi":"10.1109/BALTIC.2014.6887863","DOIUrl":"https://doi.org/10.1109/BALTIC.2014.6887863","url":null,"abstract":"In frames of the monitoring of the \"Nordstream\" Project, in 2010-2013 the observations on the bird migrations and reproduction / nesting were carried out on the gas-pipeline corridor in the Russian sector of the Gulf of Finland (Baltic Sea). Migrations activity was studied in the coastal zone of Fiskar, Sommers, Nerva, Moschny, Seskar, Bolshoy and Maliy Tutters, and Gogland Islands and in Portovaja Bay on the northern coast of Gulf of Finland. Information about the nesting populations was collected during regular marshrout observations on these islands. It was found that the gas-pipeline construction did not effect the basic characteristics of functioning, dynamics and reproduction of the ornitocenosis in the Russian part of the Gulf of Finland. The disturbance factor was observed in the Portovaja Bay in form of decreasing of the number of nesting ducks. The rare and protected species of the ornitofauna are not affected by the pipeline construction. In the research area, the expansion of the cormorants and eiders was observed. It was shown that for the assessment of the pipeline influence on the ornitofauna only the species can be used which are ecologically connected with the water environment and the coastal zone biotopes. In this group there are the typical species of the marine Baltic fauna, and the species which are connected with freshwater lakes, but using the marine coastal zone as a place of relaxation and feeding during the migration period.","PeriodicalId":435850,"journal":{"name":"2014 IEEE/OES Baltic International Symposium (BALTIC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130958658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-27DOI: 10.1109/BALTIC.2014.6887842
D. Baziuke, N. Juščenko, Andrius Šiaulys, I. Bagdanavičiūtė
Natural values of marine ecosystems often overlap with human activities. In order to reduce or even eliminate conflicts arising a considerable amount of information is needed: identification of marine activities, their location and scale, as well as the environment's response to separate pressures or different sets of impacts. Furthermore, the value itself can be estimated differently, since valuation assessments range from the anthropocentric to bio-centric point of view. In this study, the concept of a system for mapping the most sensitive marine areas in the Lithuanian marine area is introduced. It is based on the sensitivity assessment numerical scales of species and biotopes. It is being integrated into the geospatial database. Integration of such information into a GIS - based multi-criteria evaluation system can generate sensitivity maps of benthic habitats. These maps can provide important information on the most threatened to anthropogenic pressures marine areas. The system could also serve as a tool for marine spatial planning and providing a good background for decision making, i.e. the placement of activities in the least sensitive areas.
{"title":"Developing a system for mapping sensitive marine areas","authors":"D. Baziuke, N. Juščenko, Andrius Šiaulys, I. Bagdanavičiūtė","doi":"10.1109/BALTIC.2014.6887842","DOIUrl":"https://doi.org/10.1109/BALTIC.2014.6887842","url":null,"abstract":"Natural values of marine ecosystems often overlap with human activities. In order to reduce or even eliminate conflicts arising a considerable amount of information is needed: identification of marine activities, their location and scale, as well as the environment's response to separate pressures or different sets of impacts. Furthermore, the value itself can be estimated differently, since valuation assessments range from the anthropocentric to bio-centric point of view. In this study, the concept of a system for mapping the most sensitive marine areas in the Lithuanian marine area is introduced. It is based on the sensitivity assessment numerical scales of species and biotopes. It is being integrated into the geospatial database. Integration of such information into a GIS - based multi-criteria evaluation system can generate sensitivity maps of benthic habitats. These maps can provide important information on the most threatened to anthropogenic pressures marine areas. The system could also serve as a tool for marine spatial planning and providing a good background for decision making, i.e. the placement of activities in the least sensitive areas.","PeriodicalId":435850,"journal":{"name":"2014 IEEE/OES Baltic International Symposium (BALTIC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127291062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-27DOI: 10.1109/BALTIC.2014.6887852
I. Heiler
Knowledge of the spatial variability or patchiness of the sea-ice roughness is currently rather limited. Most of the earlier studies has been based on 1D laser altimeter measurements, airborne or satellite. Majority of the studies that use 2D laser altimeter data are however using 1D statistical methods for the data analysis, the focus being still on the elevations not on the 3D structure of the ice surface. In this case study a new approach was used: the topographic properties of the sea ice surface were studied in sub-footprint scale by using terrain analysis techniques. The presented study and preliminary results are one part of ANTLOAD project: `quantify Antarctic ice thickness by in situ observations, radar altimeter and modeling and use the results to assess the performance of ice going ships'.
{"title":"Topographic properties of sea ice surface roughness in both cryosat-2 and SAR sub-footprint scale","authors":"I. Heiler","doi":"10.1109/BALTIC.2014.6887852","DOIUrl":"https://doi.org/10.1109/BALTIC.2014.6887852","url":null,"abstract":"Knowledge of the spatial variability or patchiness of the sea-ice roughness is currently rather limited. Most of the earlier studies has been based on 1D laser altimeter measurements, airborne or satellite. Majority of the studies that use 2D laser altimeter data are however using 1D statistical methods for the data analysis, the focus being still on the elevations not on the 3D structure of the ice surface. In this case study a new approach was used: the topographic properties of the sea ice surface were studied in sub-footprint scale by using terrain analysis techniques. The presented study and preliminary results are one part of ANTLOAD project: `quantify Antarctic ice thickness by in situ observations, radar altimeter and modeling and use the results to assess the performance of ice going ships'.","PeriodicalId":435850,"journal":{"name":"2014 IEEE/OES Baltic International Symposium (BALTIC)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127841149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-27DOI: 10.1109/BALTIC.2014.6887849
S. Rikka, R. Uiboupin, V. Alari
Current study is focused on detection of wave field parameters from SAR imagery in the Baltic Sea. Study is carried out over the Baltic Sea region where common SW and W winds induce steep waves with shorter wavelengths compared to ocean waves. As TerraSAR-X data has high spatial resolution (0.75-1.5m per pixel) compared to previous SAR sensors (e.g. ENVISAT/ASAR), it enables to detect the two-dimensional wave spectrum even in the Baltic Sea. Main objective of this work was to demonstrate the capability of detecting wave field parameter from TerraSAR-X imagery in the Baltic Sea. The wave field parameters obtained from SAR imagery was compared with in situ measurements and SWAN (Simulating Waves Nearshore) wave model. The comparison showed significant correlation between SAR derived and buoy measured wave propagation direction (r = 0.89, rmsd = 45°, bias = 8.5°) and wavelengths (r = 0.71, rmsd = 14.8m, bias 0.4m). Comparison of SAR based wave field information with SWAN wave model outputs showed also good agreement in case of wave propagation direction (r = 0.72, rmsd = 35°, bias = 14.8°) and wavelengths (r = 0.85, rmsd = 12.1m, bias = 2.4m). Peak period was also calculated from SAR based 2D wavenumber spectrum and compared with SWAN results. Case studies showed that SAR data enables to detect land shadow effects and small scale wave field variations in the coastal zones.
{"title":"Estimation of wave field parameters from TerraSAR-X imagery in the Baltic Sea","authors":"S. Rikka, R. Uiboupin, V. Alari","doi":"10.1109/BALTIC.2014.6887849","DOIUrl":"https://doi.org/10.1109/BALTIC.2014.6887849","url":null,"abstract":"Current study is focused on detection of wave field parameters from SAR imagery in the Baltic Sea. Study is carried out over the Baltic Sea region where common SW and W winds induce steep waves with shorter wavelengths compared to ocean waves. As TerraSAR-X data has high spatial resolution (0.75-1.5m per pixel) compared to previous SAR sensors (e.g. ENVISAT/ASAR), it enables to detect the two-dimensional wave spectrum even in the Baltic Sea. Main objective of this work was to demonstrate the capability of detecting wave field parameter from TerraSAR-X imagery in the Baltic Sea. The wave field parameters obtained from SAR imagery was compared with in situ measurements and SWAN (Simulating Waves Nearshore) wave model. The comparison showed significant correlation between SAR derived and buoy measured wave propagation direction (r = 0.89, rmsd = 45°, bias = 8.5°) and wavelengths (r = 0.71, rmsd = 14.8m, bias 0.4m). Comparison of SAR based wave field information with SWAN wave model outputs showed also good agreement in case of wave propagation direction (r = 0.72, rmsd = 35°, bias = 14.8°) and wavelengths (r = 0.85, rmsd = 12.1m, bias = 2.4m). Peak period was also calculated from SAR based 2D wavenumber spectrum and compared with SWAN results. Case studies showed that SAR data enables to detect land shadow effects and small scale wave field variations in the coastal zones.","PeriodicalId":435850,"journal":{"name":"2014 IEEE/OES Baltic International Symposium (BALTIC)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128926967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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