International workshop. Cetacean echolocation and outer space neutrinos: ethology and physics for an interdisciplinary approach to underwater bioacoustics and astrophysical particles detection

Session

Short talks - Session II

19 Oct 2013, 17:45

Ettore Majorana Foundation and Centre for Scientific Culture (Erice, Sicily) School of Ethology - 30th workshop

70. Detecting the structural variability of cetacean tonal sounds by automatic detection and classification algorithms

Dr Tzu-Hao Lin (Institute of Ecology and Evolutionary Biology, National Taiwan University)

19/10/2013, 17:45

Short talk

In recent years, long-term acoustic recorders have been extensively employed to examine the temporal variation of cetacean occurrences. However, the interpretation of cetacean behavior based on their vocal usage remains difficult. The temporal variation of behaviors can only be detected through the variability of vocal usage. Tonal sounds are believed to play an important role in cetacean...

71. A preliminary investigation on the seismic air gun reverberant field in a shallow water Arctic environment

Prof. Joseph Vignola (The Catholic University of America)

19/10/2013, 18:00

Short talk

Offshore oil and gas exploration as well as geophysical research activities using seismic airgun arrays are known to generate intense underwater impulses that could impact marine mammals by causing hearing impairment and/or behavioral modification. However, few studies have investigated the resulting multipath propagation and reverberation from the airgun impulses, which could affect long...

73. Spatial prediction and interpolation effect assessment of marine mammal counter calls, ambient and anthropogenic noise

Dr Jonathan Vallarta (Jasco Applied Sciences)

19/10/2013, 18:15

Short talk

Spatial prediction methods were used to produce contour surface maps in order to document baseline ambient and anthropogenic noise conditions, and to examine the spatial and temporal distribution of marine mammals based on acoustic detections of their vocalizations. Two main groups of interpolation techniques to create contour surface maps are deterministic and geostatistical. These are based...

74. An algorithm to measure the size of sperm whales recorded by INFN deep-sea observatories in the Ionian Sea (Eastern Sicily)

Dr Francesco Caruso (LNS)

19/10/2013, 18:30

Short talk

The Sperm whale continuously produces short acoustic signals, defined as “clicks”, to recognize the environment, to find food and to facilitate intraspecies communication. Each click has a multi-pulse structure, with a first variable pulse and a series of equally spaced pulses originating from multiple reflections inside the head of the whale. The measurement of the stable Inter Pulse Interval...

75. Acoustic detection of fin whales vocalizations offshore Eastern Sicily, Ionian sea

Virginia Sciacca

19/10/2013, 18:45

Short talk

The fin whale (Balaenoptera physalus) is considered to be the only mysticete common and constantly present into the Mediterranean Sea, representing a genetically isolated population and being distributed all over the basin. Although the increased number of surveys in recent years confirmed its presence in highly productive areas of the Mediterranean Sea, still very little is known about the...