Introduction to GeophysicsAli O.
[email protected] of Earth SciencesKFU!Lecture
2OverviewGeophysics Identify Geologic Problem Survey Plan Data
Acuisition Data !eduction Data Analysis "odeling #rite !eportPhotos
from http://www.eegs.org/whatis/#hat is Geophysics$ "Application of
physics to studies of the Earth#!oon# and other planets"Includes
Earth# Atmosphere# Oceans# lanetary systems#hat is
Geophysics$"Solid$earth %eophysics&hich is the study of the
earth 'y (uantitati)e physical methods# thus e*cludin% portions of
other su'+ects "E*ploration %eophysics is the use of seismic#
%ra)ity# ma%netic# electrical# electroma%netic# etc.#methods in the
search for oil# %as# minerals#&ater#etc.# &ith the
o'+ecti)e of economic e*ploitation.E*amples of Geophysics"ure and
Applied Geophysics "Solid Earth"Surface GeophysicsApplied
Geophysics ,economic o'+ecti)es- "E*ploration
Geophysics"En%ineerin% Geophysics"En)ironmental
Geophysics"Ground&ater Geophysics"Archaeo .
Geophysics"ForensicsApplications$" Approach to earth(uake ha/ards
and %round sur)ey" late tectonics# the study of the interior
structure of the earth"0uman1s a'ility to e*ploit natural
resources"En%ineerin%"En)ironmental"0ydrolo%icalhttp://seg.org/you-geo/definition.shtmlE*amples
of %eophysical
methods2"Gra)ityhttp344&&&.)i'ra$tech$inc.com4content.asp2ID5ma%netics6%ra)ityE*amples
of %eophysical
methods2"!a%neticshttp344&&&.)i'ra$tech$inc.com4content.asp2ID5ma%netics6%ra)ityE*amples
of %eophysical methods2Seismicsa.8eflection'. 8efractionc. Surface
or 'orehole%&les of geophysical methods$Ground enetratin%
8adarE*amples of %eophysical methods2"8esisti)ityGeophysical
!ethods!ay not yield complete ans&er or uni(ue solution9
:on$uni(ueness of for&ard modelin%!any solutions# 'ut &hich
ones are nonsense# &hich are plausi'le Interpret &ithin
physical constraints ; %eolo%ical frame&ork Geophysics and
Geolo%y Geolo%y places constraints on %eophysical modelsGeophysics
places constraints on %eolo%ic interpretationslannin% a Sur)ey $
Spatial Aliasin%
