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Channel <br />1 <br />14 <br />15 <br />16 <br />17 <br />18 <br />19 <br />20 <br />21 <br />22 <br />23 <br />Break time <br /> ~l `r V 'v'im <br /> <br /> . <br />~ <br /> r <br />N <br />U <br />~~ <br /> <br />0 <br />, <br />, <br /> ~ <br /> tt ~~ <br />>~~ <br /> ~ <br /> a <br /> a <br />-, <br /> `, <br />,v ~ <br />a ~' <br />- <br /> T- <br /> ~' J ~~_ <br /> v v~' V. <br />3 <br /> <br /> ~~ <br />TIME, ms <br />Figure D2 - Waves traveling along steel pipe from a hammer strike on surface to hydrophones at <br />depths between 1,37 and 1,717 feet. Note the break time impulse on channel 1. <br />Trigger <br />channel <br />Grore~ ~~~~ ,,, ~„~. - Project: Contouring Solution Cap qty <br />c.o~~e i ayd.q TrrA.olaP. For: American Sala. LLP. <br />Project Engineer: J. M_ Descour <br />Figure D 2 <br />Surveyed: <br />