Response of ocean bottom dwellers exposed to underwater shock waves

S. H.R. Hosseini, Kunio Kaiho, Kazuyoshi Takayama

研究成果: Article査読

抄録

The paper reports results of experiments to estimate the mortality of ocean bottom dwellers, ostracoda, against under water shock wave exposures. This study is motivated to verify the possible survival of ocean bottom dwellers, foraminifera, from the devastating underwater shock waves induced mass extinction of marine creatures which took place at giant asteroid impact events. Ocean bottom dwellers under study were ostracoda, the replacement of foraminifera, we readily sampled from ocean bottoms. An analogue experiment was performed on a laboratory scale to estimate the domain and boundary of over-pressure sat which marine creatures’ mortality occurs. Ostracods were exposed to underwater shock waves generated by the explosion of 100mg PETN pellets in a chamber at shock over-pressures ranging up to 44MPa. Pressure histories were measured simultaneously on 113 samples. We found that bottom dwellers were distinctively killed against overpressures of 12MPa and this value is much higher than the usual shock over-pressure threshold value for marine-creatures having lungs and balloons.

本文言語English
ページ(範囲)69-74
ページ数6
ジャーナルShock Waves
26
1
DOI
出版ステータスPublished - 2016 1月

ASJC Scopus subject areas

  • 機械工学
  • 物理学および天文学(全般)

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