US Army Corps of Engineers
Engineer Research and Development Center

Littoral Zone Remote Sensing Group

Using New Technology to Solve Challenging Coastal Oceanographic Observation Problems

Published Sept. 1, 2016
Research and development at the Coastal and Hydraulics Laboratory’s Field Research Facility (FRF) over the last 5 years has led to the development of new observational techniques that use remotely sensed data to quantify littoral zone processes. This figure presents the following: automated continuous lidar system with data example; topographic lidar data collected with CLARIS; and sUAS platform and data product examples.

Research and development at the Coastal and Hydraulics Laboratory’s Field Research Facility (FRF) over the last 5 years has led to the development of new observational techniques that use remotely sensed data to quantify littoral zone processes. This figure presents the following: automated continuous lidar system with data example; topographic lidar data collected with CLARIS; and sUAS platform and data product examples.

The Littoral Zone Remote Sensing Group focuses on the technology development, sensor assessment, and data collection and analysis of coastal remote sensing products in support of basic and applied civil and military coastal problems.  We are working to synthesize across a broad range of remote-sensing methodologies and approaches to better understand nearshore physical processes and their impact on the morphologic evolution of the coast.

Problem

As computing power grows and numerical models of coastal evolution become more advanced, the need for spatially and temporally dense coastal morphodynamic data sets to validate, develop, and initiate those models has also grown.  Remote sensing technologies (e.g., lidar, imagery, radar) offer a solution. They can provide continuous beach and nearshore observations over wide areas at high spatial resolution, including during conditions when in-situ observations are unsafe or ineffective.  These new technologies also present new challenges as they often (1) only observe a proxy for the desired physical process, (2) require precise geoposition information and corrections to ensure their accuracy, and (3) can be affected by variations in environmental conditions.  We aim to determine how this technology can be most effectively exploited in the coastal zone to provide critical geospatial intelligence that better protects our Nation’s coastal communities during natural disasters, and improves the battlespace awareness of our troops in advance of military landing operations.

Technology

Research and development at the Coastal and Hydraulics Laboratory’s Field Research Facility (FRF) over the last 5 years has led to the development of new observational techniques that use remotely sensed data to quantify littoral zone processes.  These technologies include:

  • CLARIS: Coastal Lidar And Radar Imaging System – a mobile surveying platform from which terrestrial lidar data and X-Band radar data can be collected during calm and storm conditions, providing data on beach topography and sandbar morphology.  

  • Automated Continuous Dune Lidar System – an automated terrestrial lidar system mounted above the dune on the FRF property and provides simultaneous, hourly observations of 3D beach elevations, wave run-up, and inner-surf zone waves. 

  • sUAS Littoral Zone Mapping System – an inexpensive approach to utilize small Unmanned Aerial Systems (sUAS) to map subsurface water depths, beach topography, and surf-zone wave breaking.   This effort marks the transition of R&D technology long-used by the nearshore research community to understand the littoral zone to an inexpensive solution that will allow district field engineers or the warfighter to rapidly map large stretches of coastline in advance of coastal storms or military operations. 

Benefit

  • CLARIS – This platform provides spatially dense, morphodynamic data along large stretches of coastline used in support research topics important to the Corps, including improving storm-driven erosion prediction metrics through the inclusion of up-to-date antecedent conditions, researching large-scale coastal evolution, and evaluating coastal morphodynamic model performance.

  • Automated Continuous Dune Lidar System – This system is the first of its kind in the world to be continuously deployed in a coastal setting, and will provide critical data for CHL’s coastal processes modelers and the rest of the scientific nearshore community.  It is also an integral part of the coastal modeling testbed initiative at the FRF, providing real-time model validation for wave run-up and shoreline wave height predictions.

  • sUAS Littoral Zone Mapping System – This system will ultimately provide up-to-date information on the current state and morphology of the coastal zone—information critical for planning military landings or predicting coastal inundation and damage from extreme storms.

Status

  • CLARIS – New vehicle platform, higher resolution lidar and radar system upgrades are ongoing.

  • Automated Continuous Dune Lidar System – Data are available now at http://navigation.usace.army.mil/CHL_Viewer/FRF/.

  • sUAS Littoral Zone Mapping System – System is in development and is scheduled for demonstration to military personnel in FY18.

ERDC Point of Contact

Questions about products in development by the Littoral Zone Remote Sensing Group?

Contact: Dr. Katherine Brodie
Email: Katherine.L.Brodie@usace.army.mil
Phone: 252-261-6840x233