..., and characterize ferromagnetic submerged cultural resources (SCR). It is difficult, however, to quantify the efficacy of a given magnetic survey in terms of actual detection thresholds and, therefore, accurately assess the presence or absence of archaeological remains throughout a given area. Similarly, survey...

..., the frequency regime essentially free of discrete machinery noise. diagonal sensitivity main pile stiffness upstream oil & gas natural frequency detection threshold platform frequency change vibration mode effective number strength ambient vibration effective bay frequency offshore...