Engineering and Expeditionary Warfare Center

Current Projects

Main Needs Proposals Current Projects Completed Projects Publications SOST Partnership LMR News Annual Reports
Investment Area: Data to Support Risk Threshold Criteria
Behavioral Dose-Response Relationship and TTS in Harbor Porpoises (Project #LMR-20)
Principal Investigator: Ron Kastelein

This project is working to establish a behavioral dose–response relationship for sonar signals around 3 kHz in harbor porpoises.

Hearing and Estimated Acoustic Impacts in Three Species of Auk: Implications for the Marbled Murrelet (Project #LMR-22)
Principal Investigator: Aran Mooney

This project is measuring the hearing of up to three Auk species to provide key hearing data needed to define acoustic criteria for the marbled murrelet.

Cuvier’s Beaked Whale and Fin Whale Behavior During Military Sonar Operations: Using Medium-term Tag Technology to Develop Empirical Risk Functions (Project #LMR-23)
Principal Investigators: Greg Schorr, Erin Falcone

The effort will generate significantly larger samples of high-resolution behavioral data, particularly for beaked whales, to support development of risk functions.

Frequency-dependent Growth and Recovery of TTS in Bottlenose Dolphins (Project #LMR-24)
Principal Investigator: James Finneran

The data that results from this effort will help to define weighting functions and Temporary Threshold Shift/Permanent Threshold Shift values for mid-frequency cetaceans.

A Blainville’s Beaked Whale Behavioral Risk Function for Hawaiian Populations (Project #LMR-25)
Principal Investigators: David Moretti, Len Thomas

This effort will result in the publication of the first behavioral risk function for the Blainville’s beaked whale at the Pacific Missile Range Facility.

The Effects of Underwater Explosions on Fish (Project #LMR-26)
Principal Investigator: Peter Dahl

The results from this project will help to predict potential effects to fish that may occur during Navy explosives training activities.

3S3: Behavioral Responses of Cetaceans to Naval Sonar (Project #LMR-29)
Principal Investigators: Frans-Peter Lam, Petter Kvadsheim, Patrick Miller

The 3S (Sea mammals, Sonar, Safety) project, an international cooperative project now in its third phase, is evaluating whether exposure to continuously active sonar leads to different types or severity of behavioral responses than exposure to pulsed active (also called intermittent) sonar signals. In addition, the project is evaluating how the distance to the source affects behavioral responses.

Measuring the Effect of Range on the Behavioral Response of Marine Mammals Through the Use of Navy Sonar (Project #LMR-30)
Principal Investigator: Stephanie Watwood

To assess the effect of sonar source sources and distance (range), researchers are conducting controlled exposure experiments (CEE) with sonar from two different platforms. Each will be deployed at multiple, pre-defined distances from tagged animals to collect data on responses.

Behavioral Assessment of Auditory Sensitivity in Hawaiian Monk Seals (Project #LMR-32)
Principal Investigator: Colleen Reichmuth

Researchers are working with a specially trained adult male Hawaiian monk seal to obtain reliable measures of underwater auditory sensitivity thresholds across the full frequency range of hearing. The resulting data will be used to generate an underwater audiogram that will help to support impact assessments of the Hawaiian monk seal’s sensitivity to sound.

TTS in Harbor Seals Due to Fatiguing Sound of Several Frequencies (Project #LMR-33)
Principal Investigator: Ron Kastelein

This project focuses on measuring TTS and hearing recovery in harbor seals for deriving auditory weighting functions for seals.

Use of 'Chirp' Stimuli for Non-invasive, Low-frequency Measurement of Marine Mammal Auditory Evoked Potentials (Project #LMR-39)
Principal Investigator: James Finneran

This project seeks to contribute to developing tools needed to advance AEP measurements below 1 kHz by examining the potential for frequency-modulated, upward sweeping “chirp” stimuli to enhance marine mammal auditory brainstem response (ABR) amplitudes across a broad range of frequencies, including frequencies below 1 kHz.

Temporary Threshold Shifts in Underwater Hearing Sensitivity in Freshwater and Marine Turtles (Project #LMR-40)
Principal Investigators: Aran Mooney, Wendy Dow Piniak

This project is examining TTS in aquatic turtles and will potentially provide the initial sound exposure levels that induce these temporary threshold shifts. Resulting data could improve estimates of noise impacts to both freshwater and sea turtles and guide the development of a TTS study with sea turtles.

Frequency-dependent, Underwater Temporary Threshold Shift in California Sea Lions (Project #LMR-45)
Principal Investigator: Ron Kastelein

This project focuses on measuring TTS and hearing recovery in California sea lions (Zalophus californianus) for deriving auditory weighting functions.

Investment Area: Data Processing and Analysis Tools
Blue and Fin Whale Density Estimation in the Southern California Offshore Range Using PAM Data (Project #LMR-17)
Principal Investigator: Ana Sirovic

This team will combine point transect methodology with available passive acoustic monitoring data to create population density estimates of calling blue and fin whales.

DECAF-TEA: Density Estimation for Cetaceans from Acoustic Fixed Sensors in Testing and Evaluation Areas (Project #LMR-19)
Principal Investigator: Len Thomas

The goal of this project is to demonstrate and validate a method for passive acoustic density estimation for cetaceans by combining data from instrumented and non-instrumented ranges.

DenMod: Working Group for the Advancement of Marine Species Density Surface Modeling (Project #LMR-31)
Principal Investigator: Len Thomas

This effort is coordinating a group of density surface modeling (DSM) specialists to assess the varied approaches to and coordinate advances on using DSM models. These experts are focused on developing and implementing innovative approaches to improve spatial modeling methods used to characterize seasonal abundance and distribution of marine species, particularly in U.S. Navy training and testing areas.

Analytical Methods to Support the Development of Noise Exposure Criteria for Behavioral Response (Project #LMR-36)
Principal Investigators: Len Thomas and Catriona Harris

This project is focused on developing a computationally efficient model selection method that could expand the utility of data collected from behavioral response studies and improve the approach to grouping species for risk threshold criteria.

ACCURATE: ACoustic CUe RATEs for Passive Acoustics Density Estimation (Project #LMR-42)
Principal Investigator: Tiago Marques

This project is working to provide a comprehensive, quantitative synthesis of the current state of knowledge on acoustic cue rates and cue stability for marine mammal density estimation from passive acoustics.

MSM4PCoD: Marine Species Monitoring for the Population Consequences of Disturbance (Project #LMR-43)
Principal Investigator: Cormac Booth

This project is reviewing the US Navy Marine Species Monitoring (MSM) program and will make recommendations for how future efforts can inform future Population Consequences of Disturbance (PCoD) analyses.

Demonstration and Validation of Passive Acoustic Density Estimation for Right Whales (Project #LMR-44)
Principal Investigator: Susan Parks, Len Thomas

This project is focused on demonstrating passive acoustic density estimation methods and validating these methods using concurrent visual density estimation techniques.

Investment Area: Monitoring Technology Demonstrations
Extended Duration Acoustic Tagging of Right Whales (Project #LMR-21)
Principal Investigator: Susan Parks

This project is testing a new longer-lasting attachment method for digital tags.

High Fidelity Acoustic and Fine-scale Movement Tags (Project #LMR-27)
Principal Investigator: Alex Shorter

This project will build new generation digital tags (DTAG-3s) to be field-tested during upcoming behavioral response studies.

Improved Tag Attachment System for Remotely-deployed Medium-term Cetacean Tags (Project #LMR-41)
Principal Investigators: Russel Andrews, Greg Schorr

This project seeks to demonstrate the feasibility of producing an alternative tag attachment anchor element for remotely-deployed tags.

Investment Area: Standards and Metrics
Database and Metrics for Testing Automated Signal Processing for Passive Acoustic Monitoring (Project #LMR-6)
Principal Investigator: John Hildebrand

This project is developing and maintaining a test data set for assessing new PAM signal processing systems to generate cost and performance metrics for new signal processing tools under consideration.

Acoustic Metadata Management for Navy Fleet Operations (Project #LMR-18)
Principal Investigator: Marie Roch

This project is creating an improved data collection platform technology to meet monitoring requirements.

Proposed ASA Standards on Towed Passive Acoustic Monitoring and Mitigation Systems (Project #LMR-28)
Principal Investigator: Aaron Thode

This project would help to support development of an American National Standard on towed cabled PAM systems and operations for monitoring and mitigation.

Standardizing Methods and Nomenclature for Automated Detection of Navy Sonar (Project #LMR-34)
Principal Investigators: Elizabeth Henderson and Susan Jarvis

This project is seeking to develop a set of standardized detectors and classifiers, along with a set of standardized nomenclature, for Navy sonar signals.

Capability enhancements for Tethys, a passive acoustic metadata workbench (Project #LMR-46)
Principal Investigator: Marie Roch

This project is enhancing and updating the Tethys user interface, features and technology to increase useability and security.

Investment Area: Emergent Topics
The Effects of Noise on Marine Mammals: Progress Since 1995 (Project #LMR-10)
Principal Investigator: Christine Erbe

This project is generating an updated review of the scientific information relevant to hearing in marine mammals and the effects of underwater sound. Project co-funded by ONR, JIP, and NMFS.

Multi-spaced Measurement of Underwater Sound Fields from Explosive Sources (Project #LMR-35)
Principal Investigator: Peter Dahl

This project will conduct calibrated underwater acoustic field measurements associated with explosive detonations, which will be used to update the Navy’s Acoustic Effects Model.

Partnership Projects
Autonomous Real-Time Passive Acoustic Monitoring of Baleen Whales for Mitigating Interactions with Naval Activities
Principal Investigators: Cara Hotchkin, Mark Baumgartner, Sofie Van Parijs

This project will demonstrate, on three autonomous platforms, a combined passive acoustic detection and classification hardware/software system that is capable of detecting the calls of four species of endangered baleen whales in near real time. The project is a partnership between the LMR program and Environmental Security Technology Certification Program.

Developing Tools for Acoustic-only Behavioral Response Studies at Navy Instrumented Ranges
Principal Investigators: Tyler Helble, Elizabeth Henderson

This project will develop tools to aid in extracting whale swim track kinematic data more efficiently from the Navy range hydrophone data. Main goals include developing an acoustic modeling software interface, automated track kinematics software, and automated classification of track information.


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