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.

  • 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

  • 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.

  • 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

  • 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.

  • The FluidEarth 2 implementation of OpenMI 2.0

    Following the release of the OpenMI 2.0 standard for model coupling with reference object classes (interfaces) in C# and Java, a set of tools including a Software Development Kit (SDK) and Graphical User Interface (GUI) is expected to accompany it. These are necessary to enable numerical model developers to easily adapt their models to become OpenMI compliant and to allow modellers to ...


    By IWA Publishing

  • 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

  • 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

  • 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 ...

  • 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 ...

  • 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

  • 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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