Andone C. Lavery

Woods Hole Oceanographic Institution

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Timothy K. Stanton

Woods Hole Oceanographic Institution

Christopher Bassett

University of Washington Applied Physics Laboratory

Peter H. Wiebe

Woods Hole Oceanographic Institution

Gareth L. Lawson

Woods Hole Oceanographic Institution

B. H. Cooper

University of New Hampshire at Manchester

J. Michael Jech

NOAA National Marine Fisheries Service Northeast Fisheries Science Center

C. E. Sosolik

Clemson University

Weifeng G. Zhang

Woods Hole Oceanographic Institution

W. Rockwell Geyer

Woods Hole Oceanographic Institution

Tetjana Ross

Fisheries and Oceans Canada

Cooperative Institutions

Acoustical Society of America

145

Woods Hole Oceanographic Institution

110

Interacoustics (Denmark)

104

University of Rhode Island

California Maritime Academy

Kansas City Kansas Community College

Acoustics (Norway)

Scripps Institution of Oceanography

University of Washington

University of California, San Diego

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Exploring the ocean with sound: Telltale acoustic signatures of a changing ocean

The Journal of the Acoustical Society of America (2023)

Andone C. Lavery

Our ocean plays a major role in climate regulation, hosts vast biodiversity, sustains economies, ensures food security, and supports international shipping, tourism, recreation, and human health and security. Yet, the ocean is experiencing unprecedented changes: sea level rise, coral bleaching, ocean acidification, anoxia, accelerated melting of the major ice sheets, shifts in ocean circulation, pollution, overfishing, and increased industrialization. Sound plays a vital role in exploring, understanding, and monitoring these changes over a range of spatial and temporal scales. In this talk, I will focus on the multitude of approaches taken to using sound to understand our changing ocean, the advances in platforms used to enable these studies, the expansion of global ocean observing systems that include measurements of sound as an essential ocean variable, and the enormous complexities in interpreting acoustic signals in a dynamic and evolving ocean landscape. I will end by discussing the opportunities and obstacles associated with globalizing approaches for using sound to improve ocean stewardship.

Overfishing

Stewardship

Ocean observations

Marine life

10.1121/10.0022676

Cite

Citations (0)

Sensing stratified turbulence and shear instability using an acoustic high frequency broadband backscatter array

The Journal of the Acoustical Society of America (2014)

Jonathan R. Fincke Andone C. Lavery

High-frequency broadband acoustical backscattering measurements with an array of transducers have allowed the temporal and spatial evolution of shear instabilities in a strongly stratified estuarine environment to be investigated. Development of accurate remote sensing techniques for estimating mixing are of significant interest to the geophysical fluid dynamics community. An array of six high-frequency (120–600 kHz) broadband and narrow beam width (1 to 6 degrees half-beamwidth, depending on the frequency) transducers spaced 1.2 m apart were deployed in the Connecticut River estuary both in the along stream and across stream direction to observe high Reynolds number stratified shear instabilities. In this presentation, results of these high-resolution temporal and spatial sampling measurements of shear instabilities are shown. These measurements demonstrate the utility of these techniques for improving our understanding of the evolution of shear instabilities.

Beamwidth

Backscatter (email)

10.1121/1.4877602

Cite

Citations (0)

Frequency- and depth-dependent target strength measurements of individual mesopelagic scatterers

The Journal of the Acoustical Society of America (2020)

Christopher Bassett Andone C. Lavery Timothy K. Stanton Emma Cotter

Recent estimates based on shipboard echosounders suggest that 50% or more of global fish biomass may reside in the mesopelagic zone (depths of ∼200–1000 m). Nonetheless, little is known about the acoustic target strengths (TS) of mesopelagic animals because ship-based measurements cannot resolve individual targets. As a result, biomass estimates of mesopelagic organisms are poorly constrained. Using an instrumented tow-body, broadband (18–90 kHz) TS measurements were obtained at depths from 70 to 850 m. A comparison between TS measurements at-depth and values used in a recent global estimate of mesopelagic biomass suggests lower target densities at most depths.

Mesopelagic zone

Target strength

10.1121/10.0001745

Cite

Citations (17)

Progress on the use of autonomous underwater vehicles to study estuaries

The Journal of the Acoustical Society of America (2018)

Craig McNeil Andrey Shcherbina Marcia J. Isakson Autumn Kidwell D. Benjamin Reeder

Estuaries are a challenging environment to use acoustically navigated Autonomous Underwater Vehicles (AUVs) due to highly variable currents, relatively shallow and variable bathymetry, large buoyancy changes, suspended sediments, marine biota, and bubble plumes. The benefit to using AUVs is their ability to perform repeat automated surveys and targeted sampling of features using either remote control or on-board redirects. Our REMUS 100 AUVs are equipped with up/down looking ADCPs, CTDs, and optical backscatter sensors. Our AUVs use Long Base Line (LBL) underwater navigation, with up to four transponders, and were recently equipped to carry broadband hydrophones. We will share our experience operating these AUVs in several estuaries to characterize variability in optical and acoustical backscatter associated with estuarine features of interest (fronts, river plume, and the salt-wedge). We will discuss how these features negatively impact AUV sampling via, for example, degraded underwater communications and bottom tracking. We will also present some examples of concurrent sampling by AUVs and an advanced sonar (static and mobile) demonstrating the potential use of AUVs in estuarine research for 4D visualization of estuarine features of interest. [This work was supported by Office of Naval Research.]

10.1121/1.5035636

Cite

Citations (0)

Improved agreement of net and acoustical methods for surveying euphausiids by mitigating avoidance using a net-based LED strobe light system

ICES Journal of Marine Science (2013)

Peter H. Wiebe Gareth L. Lawson Andone C. Lavery Nancy Copley Erich Horgan

Abstract Wiebe, P. H., Lawson, G. L., Lavery, A. C., Copley, N. J., Horgan, E., and Bradley, A. 2013. Improved agreement of net and acoustical methods for surveying euphausiids by mitigating avoidance using a net-based LED strobe light system. – ICES Journal of Marine Science, 70: 650–664. Euphausiids are known for their ability to avoid capture by standard plankton nets. Repeat sampling was conducted in the Gulf of Maine with a 1 m2 MOCNESS equipped with a light-emitting diode (LED)-based strobe light concurrent to multifrequency acoustic data collection. On cruise one, the strobe light's efficacy in reducing euphausiid net avoidance was evaluated on two horizontal tows where four of the eight nets were sampled with the strobe flashing and four with the strobe off. With the strobe light on, there was a significant increase in euphausiid abundance by a factor of 4.5 at night and by a factor of 11.0 during the day. There was also a significant increase in biovolume catch of zooplankton when the strobe light was on by factors of 2.2 at night and 5.5 during the day due to a higher abundance of 10 and 35 mm euphausiids. Euphausiids caught with the strobe light on accounted for most of the observed backscattering, and acoustic and net estimates of their abundance agreed. Similar results were obtained on cruise two. Agreement of acoustic and net estimates when using the strobe light suggests that reduced avoidance enhanced the efficiency of catching euphausiids.

10.1093/icesjms/fst005

Cite

Citations (41)

Advances in remote inference of physical and biological parameters using acoustic scattering techniques: Mapping the ocean in broadband “color”

The Journal of the Acoustical Society of America (2014)

Andone C. Lavery

Active narrowband acoustic scattering techniques have been used for decades to infer the distribution of marine organisms, such as fish and zooplankton, and to image physical processes, such as bubbles, suspended sediments, internal waves, and microstructure. Accurately inferring relevant biological and physical parameters from the acoustic returns, such as size or abundance of organisms or intensity of mixing, has represented a far more formidable obstacle, requiring a multi-faceted approach in order to make significant headway. Over the years, advances have been made in understanding the fundamental scattering physics, resulting in more robust and accurate scattering models. These models have been guided and tested by controlled laboratory scattering experiments as well as in a plethora of field experiments. Rapid advances in instrumentation and deployment platforms have also enabled new insights to be gained. In this presentation, a brief overview of this research area is given, results from the development and implementation of broadband scattering techniques for studying physical and biological processes over relevant spatial and temporal scales are presented, and limitations of these techniques considered. Possible future directions and advances in the area of remote physical and biological parameter estimation from active acoustic scattering data will be discussed.

Narrowband

10.1121/1.4877608

Cite

Citations (0)

Recent development and application of active acoustic techniques for studies of zooplankton ecology and implications for ocean observatories

The Journal of the Acoustical Society of America (2012)

Gareth L. Lawson Andone C. Lavery Peter H. Wiebe Jonathan R. Fincke Nancy Copley

High-frequency active acoustic techniques enjoy a long history in the study of zooplankton ecology and increasingly are being incorporated into ocean observing systems, addressing a pressing need for zooplankton-sampling capabilities. Discriminating among sources of scattering remains a key problem in ecological applications of active acoustics, however, especially when deploying on autonomous platforms, where independent sampling with nets or optics to verify acoustic observations is often not feasible. Here we consider the ecological insights that can be afforded by active acoustic methods and implications to the design of ocean observing systems by reporting on (1) a series of recent field studies of krill ecology employing both a traditional multi-frequency system (43, 120, 200, 420 kHz) and a recently-developed broadband system (30-600 kHz) designed to provide enhanced capabilities for discrimination of scattering sources, and (2) test deployments on autonomous platforms of a low-power active acoustic system capable of broadband or narrowband transmission. Comparisons to concurrent sampling with a depth-stratified net system, when available, allow an assessment of the abilities of these acoustic systems for remotely discriminating among sources of scattering and for estimating the abundance and size of animals.

Narrowband

10.1121/1.4755026

Cite

Citations (1)

Three-dimensional acoustic scattering models for elongated fluid-like zooplankton

The Journal of the Acoustical Society of America (2000)

Andone C. Lavery Dezhang Chu Duncan E. McGehee Timothy K. Stanton

Accurate acoustic scattering models that correctly incorporate organism size, shape, material properties, and orientation are a critical component for the remote classification and detection of marine organisms, such as fish and zooplankton. Zooplankton that fall into the elongated fluid-like category are of particular importance, primarily due to their high natural abundances. In order to obtain a better understanding of the scattering properties of this class of organism, extensive laboratory measurements of the frequency (50 kHz to 1 MHz) and angular (all angles in two planes with 1-deg resolution) characteristics of the acoustic backscattering from live individual decapod shrimp (Palaemonetes vulgaris) have been performed. An acoustic scattering model based on the distorted wave Born approximation (DWBA) has been developed for these elongated fluid-like organisms. This model makes use of progressively more realistic and complex representations of the animal shape. The most sophisticated of these representations involves fully three-dimensional digitizations of the animal exterior, obtained using high-resolution computed tomography (CT). A primary focus of this study is to determine the practical conditions under which it is necessary to make use of such high-resolution, computer-intensive digitizations of animal shape.

10.1121/1.4743100

Cite

Citations (0)

Spatial and Temporal Variability of Zooplankton Thin Layers: The Effects of Composition and Orientation on Acoustic Detection of Layers

Carin J. Ashjian Malinda Sutor Andone C. Lavery Peter H. Wiebe David M. Fratantoni

Abstract : Our primary long-term objective is to better understand the physical and biological mechanisms of formation and maintenance of thin layers of zooplankton. Because zooplankton can be strong sound scatterers, acoustic instruments are effective at detecting and describing zooplankton thin layers. Using a combination of instruments (acoustics, image-forming optics, ADCPs, CTDs, and bio-optical sensors) and sampling platforms (a fleet of gliders and a profiling package), we plan to determine the temporal and spatial scales of acoustic backscatter from zooplankton aggregations, the taxonomic and size composition of the zooplankton in such layers, and the associations of zooplankton thin layers with physical parameters. To do this, it is imperative that we understand the factors influencing the frequency dependent backscatter from the organisms. In particular, the orientations of the plankton relative to the acoustic source can have significant effects on the resultant backscatter. Hence, a secondary objective is to improve our understanding of in-situ acoustic backscatter from zooplankton so that moving platforms that change orientation, such as gliders, can provide accurate acoustic survey data on the distribution and composition of scattering features. 1. What is the temporal and horizontal spatial variability of zooplankton scattering layers and the spatially coincident physical and biological parameters associated with these layers? 2. What is the time scale of zooplankton layer generation (aggregation) and destruction (dispersal) and how do these correlate with physical characteristics and phytoplankton thin layer formation? 3. What are the composition of zooplankton scattering layers and the in-situ orientation of the organisms and how does this affect the spectrum and magnitude of measured backscatter? 4. How do physical and biological mechanisms together form and maintain scattering layers?

10.21236/ada521808

Cite

Citations (0)

Using Electronic Health Record Data to Monitor Trends in Human Illness from Algae Exposure

ISEE Conference Abstracts (2020)

Andone C. Lavery Lorraine C. Backer J. Daniel

Introduction: Short-term health effects have been associated with Harmful Algal Bloom (HAB) exposure through skin contact, ingestion, or inhalation of the algal toxins. Recorded symptoms include skin, eyes, nose, or throat irritation, headache, neurological symptoms, abdominal pain, vomiting, and diarrhea. Little is known about the prevalence of these and other health symptoms related to HAB exposure in the United States. Electronic health records (EHR) present an opportunity to study the prevalence and geographic distribution of health events related to algae exposure. We evaluated the use of EHR for modeling of HAB health events across the United States. Methods: Three EHR databases were searched for use of medical diagnostic codes and key-terms within the medical record related to algae exposure. Records were summarized by demographics, location, and time. A descriptive analysis summarized the health symptoms and procedures listed as part of the clinical encounter. Results from all EHR databases will be presented. Results for the largest EHR database assessed are discussed below. Results: The IQVIA database had a total of 13,046 medical records with algae-related exposure from January 2006 to June 2019. Of these, only 290 patients had a direct diagnosis of algae exposure. Patients with algae exposure were mostly female (64%) and non-Hispanic white (87%). The mean age of patients was 38 years (range 1-85). Comparisons of this data to environmental data over space and time are currently underway and will be presented.

Medical record

10.1289/isee.2020.virtual.p-1279

Cite

Citations (0)