Quantification of changes in the beach volume by the application of an inverse of the Bruun Rule and laser scanning technology

Eelsalu, Maris; Soomere, Tarmo; Julge, Kalev

doi:10.3176/proc.2015.3.06

Cited by 11 publications

(6 citation statements)

References 22 publications

(65 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A simple consequence of the intermittency and anisotropy of wave fields and the complicated geometry of the coast is that the evolution of Baltic Sea shores is a step-like process (Soomere and Healy, 2011): A few events cause rapid changes when strong waves arrive from specific directions during events with high water levels (Tõnisson et al, 2013b). But for most of the time changes are very slow and require high-resolution measurements such as laser scanning techniques (Eelsalu et al, 2015;Sergeev et al, 2018) to be detected. The anisotropy of the wave climate combined with the orientation of large sections of the shoreline leads to a large-scale asymmetry of the sediment flux (that is mostly counter-clockwise on the shore of the Baltic Sea proper; Soomere and Viška, 2014; Figure 3).…”

Section: )mentioning

confidence: 99%

“…Although many of the cells are quite large, many are also small (Soomere et al, 2007), requiring modeling and measurements at a much finer scale than is currently available. An approach to comprehensively quantify sediment budget regions with small-scale sedimentary compartments could be to combine (airborne and terrestrial) laser scanning measurements (Eelsalu et al, 2015) and detailed bathymetric data with high-resolution, possibly phase-resolving simulations of the nearshore wave climate. Underwater sediment transport and distribution changes could be roughly estimated from approximations such as inverse Bruun's Rule (Eelsalu et al, 2015), however more sophisticated techniques should be developed that take systematically into account the alongshore transport.…”

Section: Coastline Changes and Erosionmentioning

confidence: 99%

See 1 more Smart Citation

Sea Level Dynamics and Coastal Erosion in the Baltic Sea Region

Weisse¹,

Dailidienė²,

Hünicke³

et al. 2021

Preprint

View full text Add to dashboard Cite

Abstract. There are a large number of geophysical processes affecting sea level dynamics and coastal erosion in the Baltic Sea region. These processes operate on a large range of spatial and temporal scales and are observed in many other coastal regions worldwide. Together with the outstanding number of long data records, this makes the Baltic Sea a unique laboratory for advancing our knowledge on interactions between processes steering sea level and erosion in a climate change context. Processes contributing to sea level dynamics and coastal erosion in the Baltic Sea include the still ongoing visco-elastic response of the Earth to the last deglaciation, contributions from global and North Atlantic mean sea level changes, or from wind waves affecting erosion and sediment transport along the subsiding southern Baltic Sea coast. Other examples are storm surges, seiches, or meteotsunamis contributing primarily to sea level extremes. All such processes have undergone considerable variations and changes in the past. For example, over the past about 50 years, the Baltic absolute (geocentric) mean sea level rose at a rate slightly larger than the global average. In the northern parts, due to vertical land movements, relative sea level decreased. Sea level extremes are strongly linked to variability and changes in the large-scale atmospheric circulation. Patterns and mechanisms contributing to erosion and accretion strongly depend on hydrodynamic conditions and their variability. For large parts of the sedimentary shores of the Baltic Sea, the wave climate and the angle at which the waves approach the nearshore are the dominant factors, and coastline changes are highly sensitive to even small variations in these driving forces. Consequently, processes contributing to Baltic sea level dynamics and coastline change are expected to vary and to change in the future leaving their imprint on future Baltic sea level and coastline change and variability. Because of the large number of contributing processes, their relevance for understanding global figures, and the outstanding data availability, we argue that global sea level research and research on coastline changes may greatly benefit from research undertaken in the Baltic Sea.

show abstract

Section: )mentioning

confidence: 99%

Section: Coastline Changes and Erosionmentioning

confidence: 99%

Sea Level Dynamics and Coastal Erosion in the Baltic Sea Region

Weisse¹,

Dailidienė²,

Hünicke³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…The most extreme erosion events will occur when such a combination comes along with high, normally storm-surge-related, water levels (Tõnisson et al, 2013b). However, most of the time, changes are very slow and require high-resolution measurements, such as laser scanning techniques (Eelsalu et al, 2015;Sergeev et al, 2018), to be detected. The anisotropy of the wave climate combined with the orientation of large sections of the shoreline leads to a large-scale asymmetry of the sediment flux (which is mostly counterclockwise on the shore of the Baltic Sea proper; Figs.…”

Section: Variability and Change In Erosion And Sedimentationmentioning

confidence: 99%

“…The presentday water level is about 2 m below the 1731 mark (photo courtesy of Martin Ekman). (b) Stockholm annual sea level variations (black) and land rise (red) according to Ekman (2003) (redrawn from Omstedt, 2015). ment transport.…”

Section: Introductionmentioning

confidence: 99%

Sea level dynamics and coastal erosion in the Baltic Sea region

et al. 2021

View full text Add to dashboard Cite

Abstract. There are a large number of geophysical processes affecting sea level dynamics and coastal erosion in the Baltic Sea region. These processes operate on a large range of spatial and temporal scales and are observed in many other coastal regions worldwide. This, along with the outstanding number of long data records, makes the Baltic Sea a unique laboratory for advancing our knowledge on interactions between processes steering sea level and erosion in a climate change context. Processes contributing to sea level dynamics and coastal erosion in the Baltic Sea include the still ongoing viscoelastic response of the Earth to the last deglaciation, contributions from global and North Atlantic mean sea level changes, or contributions from wind waves affecting erosion and sediment transport along the subsiding southern Baltic Sea coast. Other examples are storm surges, seiches, or meteotsunamis which primarily contribute to sea level extremes. Such processes have undergone considerable variation and change in the past. For example, over approximately the past 50 years, the Baltic absolute (geocentric) mean sea level has risen at a rate slightly larger than the global average. In the northern parts of the Baltic Sea, due to vertical land movements, relative mean sea level has decreased. Sea level extremes are strongly linked to variability and changes in large-scale atmospheric circulation. The patterns and mechanisms contributing to erosion and accretion strongly depend on hydrodynamic conditions and their variability. For large parts of the sedimentary shores of the Baltic Sea, the wave climate and the angle at which the waves approach the nearshore region are the dominant factors, and coastline changes are highly sensitive to even small variations in these driving forces. Consequently, processes contributing to Baltic sea level dynamics and coastline change are expected to vary and to change in the future, leaving their imprint on future Baltic sea level and coastline change and variability. Because of the large number of contributing processes, their relevance for understanding global figures, and the outstanding data availability, global sea level research and research on coastline changes may greatly benefit from research undertaken in the Baltic Sea.

show abstract

“…For example, such MLS can also be used for quantifying the erosion and sedimentation over long portions of sand beaches. Our previous studies (Julge et al, 2014b, Eelsalu et al, 2015 have exploited both TLS and ALS data for this purpose. However, TLS survey is very time-and labour-consuming, whereas ALS data (acquired during national mapping campaigns) are not always available nor up-to-date.…”

Section: Conclusion and Future Researchmentioning

confidence: 99%

Initial Tests and Accuracy Assesment of a Compact Mobile Laser Scanning System

Julge¹,

Ellmann²,

Vajakas³

et al. 2016

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

View full text Add to dashboard Cite

ABSTRACT:Mobile laser scanning (MLS) is a faster and cost-effective alternative to static laser scanning, even though there is a slight trade-off in accuracy. This contribution describes a compact mobile laser scanning system mounted on a vehicle. The technical parameters of the used system components, i.e. a small LIDAR sensor Velodyne VLP-16 and a dual antenna GNSS/INS system Advanced Navigation Spatial Dual, are reviewed, along with the integration of these components for spatial data acquisition. Calculation principles of 3D coordinates from the real-time data of all the involved sensors are discussed. The field tests were carried out in a controlled environment of a parking lot and at different velocities. Experiments were carried out to test the ability of the GNSS/INS system to cope with difficult conditions, e.g. sudden movements due to cornering or swerving. The accuracy of the resulting MLS point cloud is evaluated with respect to high-accuracy static terrestrial laser scanning data. Problems regarding combining LIDAR, GNSS and INS sensors are outlined, as well as the initial accuracy assessments. Initial tests revealed errors related to insufficient quality of inertial data and a need for the trajectory post-processing calculations. Although this study was carried out while the system was mounted on a car, there is potential for operating the system on an unmanned aerial vehicle, all-terrain vehicle or in a backpack mode due to its relatively compact size.

show abstract

Quantification of changes in the beach volume by the application of an inverse of the Bruun Rule and laser scanning technology

Cited by 11 publications

References 22 publications

Sea Level Dynamics and Coastal Erosion in the Baltic Sea Region

Sea Level Dynamics and Coastal Erosion in the Baltic Sea Region

Sea level dynamics and coastal erosion in the Baltic Sea region

Initial Tests and Accuracy Assesment of a Compact Mobile Laser Scanning System

Contact Info

Product

Resources

About