Cheap DECAF: Density Estimation for Cetaceans from Acoustic Fixed Sensors Using Separate, Non-Linked Devices

Abstract

Recordings of fin whales (Balaenoptera physalus) from a sparse array of Ocean Bottom Seismometers (OBSs) have been used to (1) demonstrate the use of standard density estimation techniques with sparse array data and (2) develop and test new density estimation methods. We have (1) used distance sampling and spatial modelling techniques to investigate spatiotemporal patterns of fin whale calling, (2) conducted further testing of the single sensor method used to estimate ranges to calls and (3) developed new methods to account for animals at depth in distance sampling surveys.

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Document Details

Document Type
Technical Report
Publication Date
Jun 29, 2014
Accession Number
ADA610894

Entities

People

  • D. V. Harris
  • Len Thomas
  • Luís Matias

Organizations

  • University of St Andrews

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Algorithms
  • Animals
  • Cetaceans
  • Data Analysis
  • Detection
  • Detectors
  • Fixed Sensors
  • Geographic Regions
  • Mammals
  • Marine Mammals
  • Range Finding
  • Sampling
  • Seabed
  • Seismometers
  • Simulations
  • Standards
  • Two Dimensional

Readers

  • Acoustical Oceanography.
  • Marine Mammal Biology