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SAND SEARCH

Marine science meets survey expertise.

Sand is at the root of all successful beach restoration projects. However, delineating depositional environments, identifying modern and paleo-geomorphologies, assessing cultural resources, and understanding all the marine spatial planning issues at play can be perhaps the most challenging task facing coastal engineers and practitioners today.

 

SAND SEARCH

Marine science meets survey expertise.

Sand is at the root of all successful beach restoration projects. However, delineating depositional environments, identifying modern and paleo-geomorphologies, assessing cultural resources, and understanding all the marine spatial planning issues at play can be perhaps the most challenging task facing coastal engineers and practitioners today.

 

Customized Approach

Our High Resolution Geophysical (HRG) approach includes the use of multibeam echosounder sonar, side-scan sonar, magnetometer, parametric sub-bottom profilers for shallow depth penetration, and single channel ultra-high resolution seismic solutions for deeper investigations.  Explore our sensors>>

Custom Vessels

Geodynamics owns and operates survey vessels to support multi-sensor HRG surveys within coastal, nearshore, and deep offshore waters. Capable of 24-hour survey schedules, we maximize data acquisition while minimizing vessel and crew expense.  Visit our fleet>>

Planning

Geodynamics offers unique end-to-end services for sediment resource assessment projects – we understand State and federal coverage requirements and can assist with developing and articulating sensor types and parameters, overall survey boundaries, line spacing, and other planning and logistical components of a successful HRG survey.

Permitting & Reporting

We have institutional knowledge and expertise in preparing and securing BOEM permits for investigations in federal waters and a deep understanding of the requisite reporting requirements as well. With numerous cultural resources projects in our portfolio, we can also manage Marine Archeological Resource Assessments and incorporate these findings into final deliverables.

Advanced Sand Search Tool (ASST)

Developed by Geodynamics, the ASST uses a series of highly-customized decision support tools applied to a GIS database that incorporates rigorously designed schema inputs enabling practitioners to identify and differentiate potential sand reserves.  From reconnaissance, to project, to legacy design efforts – the ASST can be built upon and utilized by continually integrating marine spatial planning data and large catalogs of previously collected geotechnical data with newly acquired geophysical data.  

Project Experience

Bogue Banks Sand Survey

Overview: Expansive offshore sediment evaluation survey located within both State and federal waters (270 NMI2 footprint).  Read In Depth>>

Oak Island Geophysical Surveys

Overview: Two discretely located survey areas in State and federal waters within the Frying Pan Shoal complex, presenting challenging operational conditions with detailed, multifaceted State and federal requirements for surveying activities and associated environmental commitments.  Read In Depth>>

Ft. Fisher Seawater Intake Hydrographic & Sub-bottom Survey

Overview: Survey of discrete areas of sand to support the sighting of a proposed saltwater intake for the N.C. Aquarium in an area with known hardbottoms and significant cultural resources.  Read In Depth>>

Wrightsville Beach

Overview: Seafloor surface and sub-bottom survey to assess bathymetry and the presence or absence of both hard bottom and cultural resources within a potential offshore sand borrow area.  Read In Depth>>

Emerald Isle Point Monitoring

Overview: Semiannual survey with  customized metrics including “virtual transects” used to consistently measure the inlet’s position relative to existing property and infrastructure.    Read In Depth>>

Topographic + Bathymetric Monitoring & Feature Mapping

Overview: Seamless beach and hydrographic surveys are conducted for ,emergency monitoring of all beach profiles in the wake of hurricanes or nor’easter storm events.  Read In Depth>>

Nags Head Geophysical Survey

Overview: Analyzed a +7 sq nmi borrow site area in accordance with the State’s regulations for beachfill projects. Vibracores previously collected within the borrow area were integrated into the SBP analysis, which enabled a clear “base sand” horizon to be identified and subtracted from the depicted seafloor.    Read In Depth>>

Holden Beach Geophysical Survey

Overview: Seafloor and subseafloor investigations achieved across 13 square mile footprint using multibeam echosounder, sub-bottom profiling, and side scan sonar sensors.  Read In Depth>>

Technical Expertise

Multi-Beam Echosounder

Determines the geometry of the seafloor, shoals, hardbottoms, and other features and object detections.

Multibeam echosounder

Measures and converts the time high frequency acoustic waves, which are emitted and reflected off the seafloor.

Sub bottom Profiler

Reveals the architecture of the sub bottom, and zones where beach sand may be present.

Sub bottom profiler

Acoustic signal penetrates the seafloor and “reflects” back when/where density changes are present in the sub bottom.

side scan sonar

Describes the sediment texture of the seafloor & identifies sand waves, shoals, shipwrecks, rock outcrops, hardbottoms, UXOs/munitions, marine debris.

side scan sonar

Measures the intensity of the acoustic return signal.

Transverse Gradiometer

Identifies and surveys cultural resource sites such as ship & aircraft wrecks. Characterizes minerology. TVG is an industry standard and widely used in UXO/munition surveys.

Transverse Gradiometer

Magnetometers measure changes in Earth’s magnetic field. TVG measures magnetic gradient in one dimension by subtracting the difference between two sensors and since the Earth’s magnetic field is 3-dimensional, three independent gradient directions can be measured.

READ Sand Search Flyer

Sand Search Flyer

Contact Us

"I have had the pleasure of working with Geodynamics/NV5 for over 15 years on projects in Virginia and North Carolina, and they are my go-to firm for completing coastal surveys and geophysical investigations. Their passion and commitment to delivering high quality work products is unmatched, and I have never been disappointed in a work product completed by Geodynamics/NV5. Their professionalism, staying on the cutting edge of market trends, and willingness to adapt on the fly to changing projects needs has also been exemplary. I wholeheartedly recommend Geodynamics/NV5.”
A&E Client
"Quality of work was exceptional. Specifically, preliminary data indicating unforeseen anomalies in the survey area were promptly shared with the Government, which allowed project direction to evolve and stakeholders to be promptly informed of developments. [Geodynamics] was available and open to above-and-beyond communication, providing the Government with critical, clarifying information to inform its actions."
US Army Corp Engineers2022 Project Review
“[NV5-Geodynamics] delivered high quality multibeam data that included extensive hardbottom patterns and the discovery of a possible civil war era shipwreck…managed multiple crews and schedule around weather and boat traffic to deliver a high quality product.”
USACE Wilmington District
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