CTBT: Science and Technology Conference 2023 - SnT2023

Session

O1.3 The Oceans and their Properties

O1.3

23 Jun 2023, 11:35

Forum

Conveners

O1.3 The Oceans and their Properties

• Silvia Blanc (Argentinian Navy Research Office (ARA) & UNIDEF (CONICET))
• Georgios Haralabus (CTBTO Preparatory Commission)

579. Detection of T Waves Associated with Mid-Ocean Ridge Seismicity Recorded by Hydroacoustic Networks: Manual Versus Automatic Approaches (O1.3-579)

Mr Vaibhav Vijay Ingale (Laboratoire Geo-Ocean, Technopôle Brest-Iroise)

23/06/2023, 11:40

T1.3 The Oceans and their Properties

Oral

Land based networks deficit the low-magnitude seismic events associated with magmatic and tectonic processes at mid-ocean ridges due to expeditious attenuation of seismic waves in the solid Earth. However, low frequency T waves generated by such events travel over very long distances in the sound fixing and ranging (SOFAR) channel with little attenuation and can be monitored by regional...

536. Analysis of Bathymetric Effects on Long Range Acoustic Propagation Using Two and Three Dimensional Transmission Loss Models in Signals Generated by Airgun Arrays (O1.3-536)

Mr Juan Domingo Gonzalez (Argentinian Navy Research Office (ARA) & UNIDEF (CONICET))

23/06/2023, 11:55

T1.3 The Oceans and their Properties

Oral

Currently, ocean acoustic models codes provide accurate predictions of sound propagation for various realistic scenarios. However, for long range propagation of signals generated by airgun arrays, some issues remain unsolved. Most implementations apply to isotropic sources but airgun arrays are strongly directional. When modelling their source level, this directionality must be correctly...

307. T-waves from Kermadec Earthquakes Acquired by CTBT Hydrophones (O1.3-307)

Mr Tiago Oliveira (CTBTO Preparatory Commission)

23/06/2023, 12:10

T1.3 The Oceans and their Properties

Oral

In addition to monitoring the oceans for signs of nuclear explosions, International Monitoring System (IMS) hydroacoustic data have been used for a broad range of civil and scientific applications, including the study of submarine earthquakes. This work analyses T wave signals recorded at CTBT-IMS hydrophone station HA3 (Juan Fernández Islands, South Pacific Ocean) triggered by Kermadec...