The Solenoid has been triggered, releasing high-pressure air into the active air passage, which is now yellow.
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Full pressure has built up in the upper chamber.
High pressure air is filling the firing chamber through the T-shaped passage, and the firing, or actuating air passage is blocked (solid black) by a solenoid valve. 1 Introduction to Marine Seismic Processing - ProMAXĪndrew Goodliffe University of Alabama Socorro, NM, Wednesday May 28Ī software package for processing reflection seismic data Commonly used in the energy industry Not free! There are many other programs that will do the same sort of thing – they differ mainly in their user interface (or lack thereof) Runs on many flavors of UNIXĪ short seismic reflection survey in Papua New Guinea September 1999 R/V Maurice Ewing 1.2 km streamer 48 channels 25 m group interval 1395 inch3 tuned six airgun array 25 m shot interval 24-fold CMPs 12.5 m apart 1 Arc-second (~30 m) grids Downloaded from the USGS Seamless server ( and converted to a GMT format (NetCDF) grid Re-sampled (using grdfilter) to a degree grid Also available from NASA ()Ĥ Woodlark Basin A rift basin in Papua New GuineaĪ classic place to study the orogenic rifting to seafloor spreading transition The line that we will look at crosses a large rift basin close to the transition to seafloor spreading The survey was carried out as part of an Ocean Drilling Program site surveyįrom: Ready Fire! Fired Lower chamber has a top diameter that's smaller the bottom diameter - air pressure forces the piston down and sealing the upper, firing chamber.