Assessing swimmer safety along the Dutch coast entails more than only assessing the risk of rip c... more Assessing swimmer safety along the Dutch coast entails more than only assessing the risk of rip currents. Seven criteria have been formulated to make a comprehensive assessment of swimmer safety along the Dutch coast. These are based on interviews with lifeguards, rescue report statistics and detailed lagrangian measurements of the current patterns and bathymetry in the shallow nearshore, at three different field sites along the South-Holland coast.
Coastal Engineering 2008 - Proceedings of the 31st International Conference, 2009
In this paper a new wave pool concept is presented using ship hulls as wave generators. To evalua... more In this paper a new wave pool concept is presented using ship hulls as wave generators. To evaluate the potential of such a concept a towing tank experiment is conducted to investigate ship wave generation in a confined space. In the towing tank experiment various hull sizes and velocities are examined to maximize the generated wave height. The laboratory data shows that when blocking of the cross section of the pool by the hull is large, the large return flow significantly influences the wave height. This is in contrast to the open water case where the return flow is much smaller and therefore is not incorporated in wave height predictions. Based on the results of the physical model tests an optimum hull size and velocity are derived to maximize the potential use for surfing and a preliminary design of the wave pool is proposed.
The Proceedings of the Coastal Sediments 2015, 2015
Nourishment projects often experience a period of large initial losses just after completion of t... more Nourishment projects often experience a period of large initial losses just after completion of the project. A better understanding of these losses would improve the design of nourishment strategies. Here we propose that the large initial losses could partly originate from the change in the cross-shore slope. A steepening of the slope results in an increase in background erosion, as is deduced from common bulk sediment transport formulae. Morphological data from a nourishment at Vlugtenburg Beach, the Netherlands provide support for this hypothesis. At Vlugtenburg we observe a large difference in the erosion rates between the first years. Our measurements also show that the slope adjusts on similar timescales as the timescales of initial losses, i.e. 1 to 2 years. We conclude that the steepness of the man-made profile is an important parameter, which may be manipulated to influence the lifetime of the nourishment.
ABSTRACT The present paper examines the generation and inter-annual evolution of alongshore varia... more ABSTRACT The present paper examines the generation and inter-annual evolution of alongshore variability in topography measured after the implementation of a sand nourishment. The magnitude of the topographic variability is quantified using 3.5 years of monthly survey data. The emergence and temporal change in alongshore morphological variability is compared with environmental and topographic controls previously suggested as governing processes in published literature. Results show that the variability at this site is slowly evolving on a monthly timescale. Magnitude of the variability in the first period after implementation of the nourishment was similar to the values found after 3.5 years. Temporal variation in the magnitude of the alongshore topographic variability was found to be related the incoming wave power offshore. Energetic storm events during winter resulted in a rapid increase in variability, followed by a gradual decrease in alongshore variability during spring and summer.
Variability in aeolian sediment transport rates have traditionally been explained by variability ... more Variability in aeolian sediment transport rates have traditionally been explained by variability in wind speed. Although it is recognised in literature that limitations in sediment supply can influence sediment transport significantly, most models that predict aeolian sediment transport attribute a dominant role to the magnitude of the wind speed. In this paper it is proposed that spatio-temporal variability of aeolian sediment transport on beaches can be dominated by variations in sediment supply rather than variations in wind speed.
NCK-days 2012 : Crossing borders in coastal research : jubilee conference proceedings, 2012
Typically a beach is out of equilibrium after a nourishment is installed. To observe how a nouris... more Typically a beach is out of equilibrium after a nourishment is installed. To observe how a nourished beach behaves on the timescale of storms a monitoring campaign was set up at Vlugtenburg beach after a nourishment in the spring of 2009. Here we show a sediment budget analysis of the first 2.5 years for a coastal domain spanning 1750 m alongshore from -9 to +5 m NAP. To investigate the redistribution of nourished sand different sections of the profile are examined. Observations show that the initial response (first 6 to 12 months after construction) is large where the sediment eroded from the beach is transported offshore to form a subtidal bar. In the following period (until present) the losses in the domain are on the order of 40 m 3 per m alongshore per year. These losses are concentrated in the profile around the waterline.
In this paper it is aimed to quantify bulk (surf-zone integrated) alongshore sediment transport u... more In this paper it is aimed to quantify bulk (surf-zone integrated) alongshore sediment transport using morphological data collected along the Dutch coast. The collected morphological data covers a domain of 18 km alongshore including the beach, the foreshore and the intertidal zone in the cross shore. The measurement domain contains the 20 million m 3 Sand Engine mega-nourishment. Detailed volume changes in cross shore profiles are calculated using the collected data. Based on the calculated volume changes in the cross shore profiles, gradients in alongshore transport can be derived. In the scope of this paper we have derived alongshore transport gradients considering three periods; 1) a period of one year; 2) a period of two months with mild wave conditions; 3) a period of four months with stormy weather. Changes in the derived gradients in sediment transport for the selected periods are significant depending on alongshore location and temporally varying forcing conditions. The potential of the data-set is only explored to a limited extent so far. Additional parameters to be analyzed in the future are coastline orientation and cross shore profile gradients.
In this paper, the aeolian transport model DUNE (Sauermann et al., 2001 that describes important ... more In this paper, the aeolian transport model DUNE (Sauermann et al., 2001 that describes important features and dynamics of typical desert dunes, is extended such that it can be applied in sandy coastal areas. Initial tests explore the limitations of the model in coastal areas after which adaptations are proposed and implemented. The final model version is applied to a coastal profile near Vlugtenburg (Dutch Holland coast).
Assessing swimmer safety along the Dutch coast entails more than only assessing the risk of rip c... more Assessing swimmer safety along the Dutch coast entails more than only assessing the risk of rip currents. Seven criteria have been formulated to make a comprehensive assessment of swimmer safety along the Dutch coast. These are based on interviews with lifeguards, rescue report statistics and detailed lagrangian measurements of the current patterns and bathymetry in the shallow nearshore, at three different field sites along the South-Holland coast.
The measurement of water wave characteristics, such as wavelength and wave height, in the surf zo... more The measurement of water wave characteristics, such as wavelength and wave height, in the surf zone is important for monitoring, prediction of erosion, and numerical model calibration. Traditional methods of measuring wave heights have either been limited to a small number of points or have required contact with the water. An experimental study of the remote sensing of water wave elevations, through the application of stereo photogrammetry, is presented. This method uses two spatially offset cameras, with overlapping fields of view, to determine water surface elevation. This remote sensing approach provides data with excellent spatial coverage and spatial and temporal resolution. Additionally, the hardware needs are minimal and the system is quickly deployed, calibrated, and operational. In the present study, a phased approach was taken, with medium scale (domain~50 m 2 ) laboratory experiments being followed by a large scale (domain~10 3 -10 4 m 2 ) field test of the method. In the laboratory, reconstructed surface elevations were validated using a pressure sensor and demonstrated excellent agreement. In the field, measured wave heights and periods were found to agree well with available buoy data.
Monitoring and understanding coastal processes is important for the Netherlands since the most de... more Monitoring and understanding coastal processes is important for the Netherlands since the most densely populated areas are situated directly behind the coastal defense. Traditionally, bathymetric changes are monitored at annual intervals, although nowadays it is understood that most dramatic changes are related to high-energy events like storms. To monitor their impact it is important to have access to a flexible surveying platform that is directly operational after the storm. For this reason, Delft University of Technology has developed a PWC (Personal Watercraft) based surveying system. The objective of the present study is to monitor bathymetric changes on the shoreface of the straight sandy Holland coast on the temporal and spatial scale of storm impact. In this paper the PWC as a surveying platform is evaluated and it is demonstrated that both the theoretical and practical error assessment indicate a depth accuracy in the order of 1 decimeter, depending on wave conditions. Moreover, the depth maps resulting from the surveys show that observed morphological changes are in agreement with the expected behaviour considering literature of Van Rijn [1997]. The results on measurement accuracy and on observed coastal changes at storm scale demonstrate the potential of a flexible surveying platform such as a PWC.
Sand nourishments are a widely applied technique to increase beach width for recreation or coasta... more Sand nourishments are a widely applied technique to increase beach width for recreation or coastal safety. As the size of these nourishments increases, new questions arise on the adaptation of the coastal system after such large unnatural shapes have been implemented. This paper presents the initial morphological evolution after implementation of a mega-nourishment project at the Dutch coast intended to feed the surrounding beaches. In total 21.5 million m 3 dredged material was used for two shoreface nourishments and a large sandy peninsula. The Sand Engine peninsula, a highly concentrated nourishment of 17 million m 3 of sand in the shape of a sandy hook and protruding 1 km from shore, was measured intensively on a monthly scale in the first 18 months after completion. We examine the rapid bathymetric evolution with concurrent offshore wave forcing to investigate the feeding behaviour of the nourishment to the adjacent coast. Our observations show a large shoreline retreat of O (150 m) along the outer perimeter of the peninsula, with locally up to 300 m retreat. The majority (72%) of the volumetric losses in sediment on the peninsula (1.8 million m 3 ) were compensated by accretion on adjacent coastal sections and dunes, confirming the feeding property of the mega nourishment. Further analyses show that the morphological changes were most pronounced in the first 6 months while the planform curvature reduced and the surf zone slope flattened to pre-nourishment values. In the following 12 months the changes were more moderate. Overall, the feeding property was strongly correlated to incident wave forcing, such that months with high incoming waves resulted in more alongshore spreading. Months with small wave heights resulted in minimal change in sediment distribution alongshore and mostly cross-shore movement of sediment.
ABSTRACT Morphodynamic changes at sandy coasts, as are dominant in the Netherlands, are typically... more ABSTRACT Morphodynamic changes at sandy coasts, as are dominant in the Netherlands, are typically monitored at yearly intervals by means of airborne laser scanning. Meanwhile it is recognised that beach morphodynamics is not a regular process and is strongly correlated to meteorological conditions. A series of 25 terrestrial laser scans of a beach experiment is analysed, obtained during a time period of 88 hours, characterised by changing weather conditions including strong wind and rain. It is shown that after a conversion to a cylindrical grid, different deformation regimes can be identified and rates of elevation changes below 1 mm per hour can be detected. Simultaneously, an analysis of distances between targets through time demonstrates the sensitivity of the used measurement set-up to the harsh weather conditions. Les transformations morphodynamiques de côtes sableuses, qui constituent un phénomène d’importance majeure aux Pays-Bas, font l’objet d’une surveillance typiquement annuelle par balayage laser aéroporté. On sait toutefois que la morphodynamique des plages est un processus irrégulier qui est fortement lié aux conditions météorologiques. Une série de 25 acquisitions par balayage laser terrestre est analysée. Ces données ont été obtenues sur une période de 88 heures caractérisée par des conditions météorologiques changeantes avec un vent fort et de la pluie. Il est démontré qu’après conversion en une grille cylindrique, différents régimes de déformation peuvent être identifiés et que des variations altimétriques inférieures au millimètre par heure peuvent être détectées. Par ailleurs, une analyse des distances entre cibles au cours du temps montre la sensibilité des mesures mises en œuvre aux conditions météorologiques extrêmes. Morphologische Veränderungen an Sandküsten, wie sie in in den Niederlanden vorherrschen, werden üblicherweise in jährlichen Abständen durch flugzeuggestütztes Laserscanning überwacht. Mittlerweile ist festgestellt, dass die morphologische Dynamik eines Strandes kein regelmäßiger Prozess ist, sondern stark mit den meteorologischen Bedingungen korreliert. Eine Folge von 25 Scans mit Terrestrischem Laserscanning wurde in 88 Stunden an einem Strandabschnitt aufgenommen und analysiert. Die Wetterbedingungen waren sehr wechselhaft, inklusive starker Winde und Regen. Durch die Umwandlung auf ein zylindrisches Gitter, können verschiedene Deformationszustände identifiziert und Höhenänderungen unter einem Millimeter pro Stunde detektiert werden. Gleichzeitig konnte durch eine Analyse der Distanzen zwischen den Zielpunkten über die Zeit die Empfindlichkeit der Messanordnung für die rauhen Wetterbedingungen gezeigt werden. Los cambios morfodinámicos en playas, costa dominante en Holanda, se monitorizan usualmente con campañas aéreas anuales de escaneado láser. Por otro lado los cambios morfodinámicos de las playas lejos de ser un proceso estacional están fuertemente correlacionados con las condiciones meteorológicas. Se analiza una serie de 25 capturas de láser terrestre obtenidas durante un periodo de 88 horas, el cual se caracteriza por condiciones meteorológicas variables incluyendo fuertes vientos y lluvia. Se demuestra que pueden identificarse distintos regímenes de deformación y que pueden detectarse ratios de cambio de elevación por debajo de un milímetro a la hora. Simultáneamente un análisis de las distancias a lo largo del tiempo entre objetos identificados demuestra la sensibilidad del equipo usado a las malas condiciones meteorológicas.
Assessing swimmer safety along the Dutch coast entails more than only assessing the risk of rip c... more Assessing swimmer safety along the Dutch coast entails more than only assessing the risk of rip currents. Seven criteria have been formulated to make a comprehensive assessment of swimmer safety along the Dutch coast. These are based on interviews with lifeguards, rescue report statistics and detailed lagrangian measurements of the current patterns and bathymetry in the shallow nearshore, at three different field sites along the South-Holland coast.
Coastal Engineering 2008 - Proceedings of the 31st International Conference, 2009
In this paper a new wave pool concept is presented using ship hulls as wave generators. To evalua... more In this paper a new wave pool concept is presented using ship hulls as wave generators. To evaluate the potential of such a concept a towing tank experiment is conducted to investigate ship wave generation in a confined space. In the towing tank experiment various hull sizes and velocities are examined to maximize the generated wave height. The laboratory data shows that when blocking of the cross section of the pool by the hull is large, the large return flow significantly influences the wave height. This is in contrast to the open water case where the return flow is much smaller and therefore is not incorporated in wave height predictions. Based on the results of the physical model tests an optimum hull size and velocity are derived to maximize the potential use for surfing and a preliminary design of the wave pool is proposed.
The Proceedings of the Coastal Sediments 2015, 2015
Nourishment projects often experience a period of large initial losses just after completion of t... more Nourishment projects often experience a period of large initial losses just after completion of the project. A better understanding of these losses would improve the design of nourishment strategies. Here we propose that the large initial losses could partly originate from the change in the cross-shore slope. A steepening of the slope results in an increase in background erosion, as is deduced from common bulk sediment transport formulae. Morphological data from a nourishment at Vlugtenburg Beach, the Netherlands provide support for this hypothesis. At Vlugtenburg we observe a large difference in the erosion rates between the first years. Our measurements also show that the slope adjusts on similar timescales as the timescales of initial losses, i.e. 1 to 2 years. We conclude that the steepness of the man-made profile is an important parameter, which may be manipulated to influence the lifetime of the nourishment.
ABSTRACT The present paper examines the generation and inter-annual evolution of alongshore varia... more ABSTRACT The present paper examines the generation and inter-annual evolution of alongshore variability in topography measured after the implementation of a sand nourishment. The magnitude of the topographic variability is quantified using 3.5 years of monthly survey data. The emergence and temporal change in alongshore morphological variability is compared with environmental and topographic controls previously suggested as governing processes in published literature. Results show that the variability at this site is slowly evolving on a monthly timescale. Magnitude of the variability in the first period after implementation of the nourishment was similar to the values found after 3.5 years. Temporal variation in the magnitude of the alongshore topographic variability was found to be related the incoming wave power offshore. Energetic storm events during winter resulted in a rapid increase in variability, followed by a gradual decrease in alongshore variability during spring and summer.
Variability in aeolian sediment transport rates have traditionally been explained by variability ... more Variability in aeolian sediment transport rates have traditionally been explained by variability in wind speed. Although it is recognised in literature that limitations in sediment supply can influence sediment transport significantly, most models that predict aeolian sediment transport attribute a dominant role to the magnitude of the wind speed. In this paper it is proposed that spatio-temporal variability of aeolian sediment transport on beaches can be dominated by variations in sediment supply rather than variations in wind speed.
NCK-days 2012 : Crossing borders in coastal research : jubilee conference proceedings, 2012
Typically a beach is out of equilibrium after a nourishment is installed. To observe how a nouris... more Typically a beach is out of equilibrium after a nourishment is installed. To observe how a nourished beach behaves on the timescale of storms a monitoring campaign was set up at Vlugtenburg beach after a nourishment in the spring of 2009. Here we show a sediment budget analysis of the first 2.5 years for a coastal domain spanning 1750 m alongshore from -9 to +5 m NAP. To investigate the redistribution of nourished sand different sections of the profile are examined. Observations show that the initial response (first 6 to 12 months after construction) is large where the sediment eroded from the beach is transported offshore to form a subtidal bar. In the following period (until present) the losses in the domain are on the order of 40 m 3 per m alongshore per year. These losses are concentrated in the profile around the waterline.
In this paper it is aimed to quantify bulk (surf-zone integrated) alongshore sediment transport u... more In this paper it is aimed to quantify bulk (surf-zone integrated) alongshore sediment transport using morphological data collected along the Dutch coast. The collected morphological data covers a domain of 18 km alongshore including the beach, the foreshore and the intertidal zone in the cross shore. The measurement domain contains the 20 million m 3 Sand Engine mega-nourishment. Detailed volume changes in cross shore profiles are calculated using the collected data. Based on the calculated volume changes in the cross shore profiles, gradients in alongshore transport can be derived. In the scope of this paper we have derived alongshore transport gradients considering three periods; 1) a period of one year; 2) a period of two months with mild wave conditions; 3) a period of four months with stormy weather. Changes in the derived gradients in sediment transport for the selected periods are significant depending on alongshore location and temporally varying forcing conditions. The potential of the data-set is only explored to a limited extent so far. Additional parameters to be analyzed in the future are coastline orientation and cross shore profile gradients.
In this paper, the aeolian transport model DUNE (Sauermann et al., 2001 that describes important ... more In this paper, the aeolian transport model DUNE (Sauermann et al., 2001 that describes important features and dynamics of typical desert dunes, is extended such that it can be applied in sandy coastal areas. Initial tests explore the limitations of the model in coastal areas after which adaptations are proposed and implemented. The final model version is applied to a coastal profile near Vlugtenburg (Dutch Holland coast).
Assessing swimmer safety along the Dutch coast entails more than only assessing the risk of rip c... more Assessing swimmer safety along the Dutch coast entails more than only assessing the risk of rip currents. Seven criteria have been formulated to make a comprehensive assessment of swimmer safety along the Dutch coast. These are based on interviews with lifeguards, rescue report statistics and detailed lagrangian measurements of the current patterns and bathymetry in the shallow nearshore, at three different field sites along the South-Holland coast.
The measurement of water wave characteristics, such as wavelength and wave height, in the surf zo... more The measurement of water wave characteristics, such as wavelength and wave height, in the surf zone is important for monitoring, prediction of erosion, and numerical model calibration. Traditional methods of measuring wave heights have either been limited to a small number of points or have required contact with the water. An experimental study of the remote sensing of water wave elevations, through the application of stereo photogrammetry, is presented. This method uses two spatially offset cameras, with overlapping fields of view, to determine water surface elevation. This remote sensing approach provides data with excellent spatial coverage and spatial and temporal resolution. Additionally, the hardware needs are minimal and the system is quickly deployed, calibrated, and operational. In the present study, a phased approach was taken, with medium scale (domain~50 m 2 ) laboratory experiments being followed by a large scale (domain~10 3 -10 4 m 2 ) field test of the method. In the laboratory, reconstructed surface elevations were validated using a pressure sensor and demonstrated excellent agreement. In the field, measured wave heights and periods were found to agree well with available buoy data.
Monitoring and understanding coastal processes is important for the Netherlands since the most de... more Monitoring and understanding coastal processes is important for the Netherlands since the most densely populated areas are situated directly behind the coastal defense. Traditionally, bathymetric changes are monitored at annual intervals, although nowadays it is understood that most dramatic changes are related to high-energy events like storms. To monitor their impact it is important to have access to a flexible surveying platform that is directly operational after the storm. For this reason, Delft University of Technology has developed a PWC (Personal Watercraft) based surveying system. The objective of the present study is to monitor bathymetric changes on the shoreface of the straight sandy Holland coast on the temporal and spatial scale of storm impact. In this paper the PWC as a surveying platform is evaluated and it is demonstrated that both the theoretical and practical error assessment indicate a depth accuracy in the order of 1 decimeter, depending on wave conditions. Moreover, the depth maps resulting from the surveys show that observed morphological changes are in agreement with the expected behaviour considering literature of Van Rijn [1997]. The results on measurement accuracy and on observed coastal changes at storm scale demonstrate the potential of a flexible surveying platform such as a PWC.
Sand nourishments are a widely applied technique to increase beach width for recreation or coasta... more Sand nourishments are a widely applied technique to increase beach width for recreation or coastal safety. As the size of these nourishments increases, new questions arise on the adaptation of the coastal system after such large unnatural shapes have been implemented. This paper presents the initial morphological evolution after implementation of a mega-nourishment project at the Dutch coast intended to feed the surrounding beaches. In total 21.5 million m 3 dredged material was used for two shoreface nourishments and a large sandy peninsula. The Sand Engine peninsula, a highly concentrated nourishment of 17 million m 3 of sand in the shape of a sandy hook and protruding 1 km from shore, was measured intensively on a monthly scale in the first 18 months after completion. We examine the rapid bathymetric evolution with concurrent offshore wave forcing to investigate the feeding behaviour of the nourishment to the adjacent coast. Our observations show a large shoreline retreat of O (150 m) along the outer perimeter of the peninsula, with locally up to 300 m retreat. The majority (72%) of the volumetric losses in sediment on the peninsula (1.8 million m 3 ) were compensated by accretion on adjacent coastal sections and dunes, confirming the feeding property of the mega nourishment. Further analyses show that the morphological changes were most pronounced in the first 6 months while the planform curvature reduced and the surf zone slope flattened to pre-nourishment values. In the following 12 months the changes were more moderate. Overall, the feeding property was strongly correlated to incident wave forcing, such that months with high incoming waves resulted in more alongshore spreading. Months with small wave heights resulted in minimal change in sediment distribution alongshore and mostly cross-shore movement of sediment.
ABSTRACT Morphodynamic changes at sandy coasts, as are dominant in the Netherlands, are typically... more ABSTRACT Morphodynamic changes at sandy coasts, as are dominant in the Netherlands, are typically monitored at yearly intervals by means of airborne laser scanning. Meanwhile it is recognised that beach morphodynamics is not a regular process and is strongly correlated to meteorological conditions. A series of 25 terrestrial laser scans of a beach experiment is analysed, obtained during a time period of 88 hours, characterised by changing weather conditions including strong wind and rain. It is shown that after a conversion to a cylindrical grid, different deformation regimes can be identified and rates of elevation changes below 1 mm per hour can be detected. Simultaneously, an analysis of distances between targets through time demonstrates the sensitivity of the used measurement set-up to the harsh weather conditions. Les transformations morphodynamiques de côtes sableuses, qui constituent un phénomène d’importance majeure aux Pays-Bas, font l’objet d’une surveillance typiquement annuelle par balayage laser aéroporté. On sait toutefois que la morphodynamique des plages est un processus irrégulier qui est fortement lié aux conditions météorologiques. Une série de 25 acquisitions par balayage laser terrestre est analysée. Ces données ont été obtenues sur une période de 88 heures caractérisée par des conditions météorologiques changeantes avec un vent fort et de la pluie. Il est démontré qu’après conversion en une grille cylindrique, différents régimes de déformation peuvent être identifiés et que des variations altimétriques inférieures au millimètre par heure peuvent être détectées. Par ailleurs, une analyse des distances entre cibles au cours du temps montre la sensibilité des mesures mises en œuvre aux conditions météorologiques extrêmes. Morphologische Veränderungen an Sandküsten, wie sie in in den Niederlanden vorherrschen, werden üblicherweise in jährlichen Abständen durch flugzeuggestütztes Laserscanning überwacht. Mittlerweile ist festgestellt, dass die morphologische Dynamik eines Strandes kein regelmäßiger Prozess ist, sondern stark mit den meteorologischen Bedingungen korreliert. Eine Folge von 25 Scans mit Terrestrischem Laserscanning wurde in 88 Stunden an einem Strandabschnitt aufgenommen und analysiert. Die Wetterbedingungen waren sehr wechselhaft, inklusive starker Winde und Regen. Durch die Umwandlung auf ein zylindrisches Gitter, können verschiedene Deformationszustände identifiziert und Höhenänderungen unter einem Millimeter pro Stunde detektiert werden. Gleichzeitig konnte durch eine Analyse der Distanzen zwischen den Zielpunkten über die Zeit die Empfindlichkeit der Messanordnung für die rauhen Wetterbedingungen gezeigt werden. Los cambios morfodinámicos en playas, costa dominante en Holanda, se monitorizan usualmente con campañas aéreas anuales de escaneado láser. Por otro lado los cambios morfodinámicos de las playas lejos de ser un proceso estacional están fuertemente correlacionados con las condiciones meteorológicas. Se analiza una serie de 25 capturas de láser terrestre obtenidas durante un periodo de 88 horas, el cual se caracteriza por condiciones meteorológicas variables incluyendo fuertes vientos y lluvia. Se demuestra que pueden identificarse distintos regímenes de deformación y que pueden detectarse ratios de cambio de elevación por debajo de un milímetro a la hora. Simultáneamente un análisis de las distancias a lo largo del tiempo entre objetos identificados demuestra la sensibilidad del equipo usado a las malas condiciones meteorológicas.
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