A fiber‐optic interferometric geophone

A Fiber-Optic Interferometric Tri-Component Geophone for Ocean Floor Seismic Monitoring

For the implementation of an all fiber observation network for submarine seismic monitoring, a tri-component geophone based on Michelson interferometry is proposed and tested. A compliant cylinder-based sensor head is analyzed with finite element method and tested. The operation frequency ranges from 2 Hz to 150 Hz for acceleration detection, employing a phase generated carrier demodulation sch...

Reverse time shot-geophone migration

Shot-geophone migration, commonly accomplished using wavefield depth extrapolation (“survey sinking”), has a two way reverse time realization as well. The reverse time version permits imaging of overturned reflections. Shot-geophone migration differs from other prestack migrations in the definition of the prestack image volume which it creates. This difference is most clearly seen by identifyin...

Kinematics of shot-geophone migration

In contrast to prestack migration methods based on data binning, common image gathers produced by shot-geophone migration exhibit the appropriate semblance property in either offset domain (focussing at zero offset) or angle domain (focussing at zero slope), when the migration velocity is kinematically correct and when events to be migrated arrive in the data along non-turning rays. The latter ...

An Airway which Facilitates intubation with a Fiberoptic Laryngoscope

Lee fiberoptic intubating airway for facilitating orotracheal fiberoptic intubation

Corresponding author: Sang-Kyi Lee, M.D., Ph.D., Department of Anesthesiology and Pain Medicine, Chonbuk National University Medical School & Chonbuk National University Hospital, 20, Gunji-ro, Deokjin-gu, Jeonju 561-710, Korea. Tel: 82-63-250-1250, Fax: 82-63-250-1240, E-mail: [email protected] This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Co...