Applied geophysics for geologists and engineers. The elements of geophysical prospectin / Прикладная геофизика для геологов и инженеров. Элементы геофизической разведки

AN elementary textbook is much concerned with the fundamentals of a subject and these do not change with time. In this respect the second edition of our book has been little modified. In every other it is much altered for the subject has advanced greatly since we gathered together the material for the original version. The changes have been brought about mainly by developments in electronics and in the science of computing. The former have led to the appearance of much lighter, more sensitive and altogether much improved instruments, making it possible to collect better data far more quickly. The latter have made possible the rapid reduction of the very large amounts of data that can now be collected during a survey but even more important they make possible the use of far more sophisticated interpretation techniques than formerly. It is no exaggeration, therefore, to say that applied geophysics has moved into a new era in the interim since this book was first conceived. <...>