bathymetry Articles

  • Mapping top of rock and sediment thickness case study

    San Felipe, Panama A port expansion was planned off the coast of San Felipe, Panama. GeoView was tasked to provide bathymetric information within the survey area, map the top of rock and evaluate the thickness of the overlying marine sediments. The survey area was approximately 300 hectares in size. GeoView collected sub-bottom profiling and bathymetry data along transect lines spaced ...


    By GeoView, Inc.

  • Generating meshes for tidal wetland modeling using light detection and ranging (LiDAR) data

    A high resolution model mesh was required to numerically simulate sediment transport in tidal marshes. The timing of flooding is dependent on the tidal marsh ground elevation, which requires accurate topographic elevation data. The tidal prism of the marsh is determined by the volume provided by tidal channels in the system. Hence, their location and bathymetry needed to be represented ...


    By IWA Publishing

  • Project - Submerged Recovery & Inspection Services

    Submerged Recovery & Inspection Services used a VideoRay Pro4 ROV to complete more than 223 km (139 miles) of bathymetry and biotope survey transects in the Red Sea during the summer of 2011. Submerged Recovery worked with King Fahd University of Petroleum & Minerals, contracted by Saudi ARAMCO to conduct an extensive survey in the Red Sea. This survey was critical in gaining a baseline ...


    By VideoRay LLC

  • Modelling flows in shallow (fluvial) lakes with prevailing circulations in the horizontal plane: limits of 2D compared to 3D models

    The numerical modelling of circulations in shallow lakes is a relevant tool for all environmental applications in which flow advection processes are of interest, e.g. for studies on nutrients, microorganisms, pollutants and sediment dynamics. While three-dimensional (3D) models are needed to properly describe the flow fields of basins with the main circulations in the vertical plane, ...


    By IWA Publishing

  • Mapping sediment thickness case study

    Polk County, Florida Bathymetric and sub-bottom surveys were conducted within a clay settling pond at a Phosphate mine in Central Florida. Prior to the geophysical survey, a depression or slump had formed along the northern dam of the pond. The purpose of the study was to map various sediment layers within the pond to help determine if the depressions or slumps were related to sinkhole ...


    By GeoView, Inc.

  • Case Study - Lacustrine: Underwater Resistivity Surveys

    Lake Travis – Austin, Texas Objective:  Locate buried pipeline and map the limestone bedrock surface Site:  Lake Travis, near Austin, Texas USA during the AGI Marine Resistivity Seminar Date:  May 1, 2014 and May 7, 2015 Instrument:  SuperStingR8 WiFi, SwitchBox56, underwater marine cable with 28 electrodes spaced at 6m. ...


    By Advanced Geosciences, Inc.

  • Generation of the bathymetry of a eutrophic shallow lake using WorldView-2 imagery

    In this study, water depth distribution (bathymetric map) in a eutrophic shallow lake was determined using a WorldView-2 multispectral satellite image. Lake Eymir in Ankara (Turkey) was the study site. In order to generate the bathymetric map of the lake, image and data processing, and modelling were applied. First, the bands that would be used in depth prediction models were determined through ...


    By IWA Publishing

  • CETO 6 - Albany (WA) Project

    The Albany Wave Energy Project commenced in 2017 and intended to build, deploy and operate a prototype CETO 6 Unit. The Western Australian Government committed $15.75m in funding which was subsequently withdrawn and the project has therefore ceased. Despite this, valuable work was done on developing one of the world’s most attractive sites for wave energy. Vessel ...


    By Carnegie Clean Energy

  • Measuring the Dispersion Coefficient with Acoustic Doppler Current Profilers

    Abstract: A method is evaluated for estimating the longitudinal dispersion coefficient K from velocities and bathymetry measured with an acoustic Doppler current profiler ADCP. If shear dispersion controls the mixing, the dispersion coefficient can be estimated from measurements of velocity and depth in a cross section. The dispersion coefficient has typically been measured by costly and ...


    By Teledyne RD Instruments

  • Calibration of a 2-D morphodynamic model using water–sediment flux maps derived from an ADCP recording

    This study compared numerical simulations of the hydro-morphodynamics of a stretch of the Po River (Italy) to detailed measurements of the river's morphology and water–sediment fluxes. A survey of the 8-km-long, 250-m-wide river section, previously described in former publications, was performed using two vessels. The first was equipped with a multibeam echo sounder for bathymetry ...


    By IWA Publishing

  • Advancing Autonomous Underwater Vehicle Technology

    Autonomous underwater vehicles (AUVs) are a mainstay of the subsea survey industry. With unparalleled speed and accuracy in deep water, they have long been the obvious choice for surveys in inhospitable, deep environments. In light of the current downturn in the oil and gas market and the increasing visibility of autonomous vehicles, such as self-driving cars, AUV technology is poised to break ...

  • Diary of a Wetlands International intern in Central Java

    I spent 4 months doing fieldwork in Timbul Sloko, a small village in Demak District, on the North coast of Central Java (Indonesia). I was there as part of a Wetlands International project to restore the eroding mud coast of the village through ...


    By Wetlands International

  • Water drones hunt down, combat toxic algae

    As air drones already exist, a new development has evolved in drone technology, a water-based drone to ensure fast and efficient algae control and treatment. Combating algae is known as a complicated process which requires accurate measurements. A European consortium would like to present the DRONIC project, which will change algae treatment into a new technology that can simplify and ...


    By LG Sonic

  • Finding the needle in the hay stack - tracing seabed gas seepages using hullborne multibeam echo sounder, and AUV based sonar and optical systems case study

    Scientific objective A better understanding of the shallow geological systems in the Barents Sea with particular attention to fluid flow Specific objectives Identify regional spatial distribution of gas flares within an area of 3000 km2 in the Barents Sea Identify and describe associated structures (i.e. pockmarks, carbonate reefs) using ...


    By Franatech GmbH

  • Impacts of Advanced Tertiary Treatment on the Nitrogen Cycling of a Hypereutrophic Lake: A Case for 303(D) Delisting

    ABSTRACTThe water quality of Onondaga Lake, a 12 km2, dimictic, water body located in central New York State, has been compromised by a 100-year history of municipal and industrial pollution. The Syracuse Metropolitan Wastewater Treatment Plant (Metro), an 85 MGD tertiary treatment facility serving the City of Syracuse and surrounding area, discharges to the lake and historically accounted for ...

  • A sustainable solution for massive coastal erosion in Central Java - Towards Regional Scale Application of Hybrid Engineering

    Deltaic populations in western Indonesia are increasingly threatened by rapid shoreline degradation and erosion. In just a few decades, some coastal areas have retreated by more than two kilometres1. Housing, roads and valuable land is literally swept into the sea. This loss of land continues unabated, sometimes by tens of metres per year. The erosion causes saline intrusion, affecting drinking ...


    By Wetlands International

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