<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">geophysics</topic></authority><related type="narrower"><topic>seismology</topic></related><related type="other"><topic>geophysicists</topic></related><related type="other"><topic>geophysical instruments</topic></related><related type="broader"><topic>physics</topic></related><related type="broader"><topic>earth sciences</topic></related><variant type="other"><topic>geophysical</topic></variant> <note xml:lang="en"><![CDATA[ Branch of physics dealing with the physical forces acting on, and particularly within, the earth. It includes the study of earthquake waves, geomagnetism, gravitational fields, and electrical conductivity using precise quantitative principles.  ]]></note></mads>