Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/69618
Title: Clustering of snapping shrimp snaps on long time scales: A simulation study
Authors: Legg, M.W.
Chitre, M.A. 
Issue Date: 2012
Source: Legg, M.W.,Chitre, M.A. (2012). Clustering of snapping shrimp snaps on long time scales: A simulation study. Australian Acoustical Society Conference 2012, Acoustics 2012: Acoustics, Development, and the Environment : 684-691. ScholarBank@NUS Repository.
Abstract: Fields of snapping shrimp produce a great number of impulsive snapping sounds throughout the world's tropical and sub-tropical shallow water regions. Snaps from snapping shrimp appear as short spikes in timeseries obtained from hydrophone measurements. Clustering of the spikes in the timeseries can occur on at least three different time scales corresponding to three spatio-temporal mechanisms. The mechanism for clustering on short time scales is multipath propagation, because a single snap from a shrimp evolves into a cluster of snap signals at the hydrophone. Mechanisms for clustering on medium and long time scales remain intriguing and inconclusive. This paper investigates diurnal snap-rate variations and their effect on clustering over long time scales. Simulation of spike timeseries made use of the Cox-Ingersoll-Ross driven doubly stochastic Poisson process with diurnal variation introduced by varying one model parameter. Fano-factor analysis of the simulation results showed that diurnal variations have a profound effect on clustering of snapping shrimp snaps on long time scales.
Source Title: Australian Acoustical Society Conference 2012, Acoustics 2012: Acoustics, Development, and the Environment
URI: http://scholarbank.nus.edu.sg/handle/10635/69618
ISBN: 9781622769704
Appears in Collections:Staff Publications

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