Airborne Lidar Bathymetry Applied to Coastal Hydrodynamic Processes

Long, Bernard; Aucoin, Françis; Montreuil, Stéphane; Robitaille, Valérie; Xhardé, Régis

doi:10.9753/icce.v32.sediment.26

Cited by 8 publications

(4 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 3 d shows relative reflectance values in which seafloor features can be distinguished. Long et al [ 40 ] demonstrates that bathymetric LIDAR intensity waveforms can be used to determine sedimentological and hydrodynamic characteristics. Seafloor reflectance data from bathymetric LIDAR can be even more valuable than its terrestrial/topographic counterparts, due to the challenges typically encountered in obtaining detailed imagery of the seafloor from other airborne or spaceborne remote sensing technologies.…”

Section: Applications Of Lidar Intensitymentioning

confidence: 99%

A Review of LIDAR Radiometric Processing: From Ad Hoc Intensity Correction to Rigorous Radiometric Calibration

Kashani

Olsen

Parrish

et al. 2015

Sensors

290

214

View full text Add to dashboard Cite

In addition to precise 3D coordinates, most light detection and ranging (LIDAR) systems also record “intensity”, loosely defined as the strength of the backscattered echo for each measured point. To date, LIDAR intensity data have proven beneficial in a wide range of applications because they are related to surface parameters, such as reflectance. While numerous procedures have been introduced in the scientific literature, and even commercial software, to enhance the utility of intensity data through a variety of “normalization”, “correction”, or “calibration” techniques, the current situation is complicated by a lack of standardization, as well as confusing, inconsistent use of terminology. In this paper, we first provide an overview of basic principles of LIDAR intensity measurements and applications utilizing intensity information from terrestrial, airborne topographic, and airborne bathymetric LIDAR. Next, we review effective parameters on intensity measurements, basic theory, and current intensity processing methods. We define terminology adopted from the most commonly-used conventions based on a review of current literature. Finally, we identify topics in need of further research. Ultimately, the presented information helps lay the foundation for future standards and specifications for LIDAR radiometric calibration.

show abstract

Section: Applications Of Lidar Intensitymentioning

confidence: 99%

A Review of LIDAR Radiometric Processing: From Ad Hoc Intensity Correction to Rigorous Radiometric Calibration

Kashani

Olsen

Parrish

et al. 2015

Sensors

290

214

View full text Add to dashboard Cite

show abstract

“…Moreover, from ALB, sedimentological (density, concentration) and hydrodynamic (suspended sediment concentration, turbulence) information can be obtained on the basis of the analysis of laser return intensity curves [ 114 ].…”

Section: Use Of Lidar Bathymetrymentioning

confidence: 99%

The Use of Green Laser in LiDAR Bathymetry: State of the Art and Recent Advancements

Szafarczyk

Toś

2022

Sensors

View full text Add to dashboard Cite

Bathymetric LiDAR technology is a technology used for simultaneous data acquisition regarding the morphology of the bottom of water reservoirs and the surrounding coastal zone, realized from the air, e.g., by plane or drone. Contrary to the air topographic LiDAR, which uses an infrared wavelength of 1064 nm, bathymetric LiDAR systems additionally use a green wavelength of 532 nm. The green laser can penetrate the water, which makes it possible to measure the depth of shallow water reservoirs, rivers, and coastal sea waters within three Secchi depths. This article presents the theoretical basis for the construction of a green laser. Against the background of other methods of measuring the bottom of water reservoirs, the technology using waves from the visible light range is presented in detail in the assessment of the bottom morphology of shallow water reservoirs. The possibilities of using green laser in lidar bathymetry implemented in particular in non-navigable regions are shown. The results of the researchers’ work on river processes (erosion, sedimentation), design of stream restoration, determination of morphometric parameters of the riverbed, as well as assessment of the topography of the marine coastal bottom zones are summarized. The development direction of lidar bathymetry is discussed.

show abstract

“…At present, the InSAR is reportedly the most effective means of measuring changes in large-scale land surface altitude, as highdensity measurements over large areas are made by using radar signals from Earth-orbiting satellites (USGS 2017). LiDAR, particularly airborne LiDAR bathymetry (ALB), is an efficient, high-resolution, laser-based tool to monitor geomorphology in coastal environments (Long et al 2010).…”

Section: Tools For Assessmentmentioning

confidence: 99%

Environmental factors affecting coastal and estuarine submerged aquatic vegetation (SAV)

Eisemann¹,

Thomas²,

Balazik³

et al. 2021

View full text Add to dashboard Cite

Submerged aquatic vegetation (SAV) growing in estuarine and coastal marine systems provides crucial ecosystem functions ranging from sediment stabilization to habitat and food for specific species. SAV systems, however, are sensitive to a number of environmental factors, both anthropogenic and natural. The most common limiting factors are light limitation, water quality, and salinity, as reported widely across the literature. These factors are controlled by a number of complex processes, however, varying greatly between systems and SAV populations. This report seeks to conduct an exhaustive examination of factors influencing estuarine and coastal marine SAV habitats and find the common threads that tie these ecosystems together. Studies relating SAV habitats in the United States to a variety of factors are reviewed here, including geomorphological and bathymetric characteristics, sediment dynamics, sedimentological characteristics, and water quality, as well as hydrologic regime and weather. Tools and methods used to assess each of these important factors are also reviewed. A better understanding of fundamental environmental factors that control SAV growth will provide crucial information for coastal restoration and engineering project planning in areas populated by SAVs.

show abstract

Airborne Lidar Bathymetry Applied to Coastal Hydrodynamic Processes

Cited by 8 publications

References 24 publications

A Review of LIDAR Radiometric Processing: From Ad Hoc Intensity Correction to Rigorous Radiometric Calibration

A Review of LIDAR Radiometric Processing: From Ad Hoc Intensity Correction to Rigorous Radiometric Calibration

The Use of Green Laser in LiDAR Bathymetry: State of the Art and Recent Advancements

Environmental factors affecting coastal and estuarine submerged aquatic vegetation (SAV)

Contact Info

Product

Resources

About