earthquake Flashcards
also known as quake
earthquake
ALSO KNOWN AS A QUAKE TREMOR, OR TEMBLOR, IS THE PERCEPTIBLE SHAKING OF THE SURFACE OF THE EARTH,
earthquake
STRESS INSIDE EARTH IMPLIES PRESSURE DEVELOPED
STRAIN IMPLIES THE DEFORMATION OCCURRED IN THE WORK
ROCKS CAN TAKE 1-2% OF
ELASTIC REBOUND THEORY
AMERICAN GEOPHYSICIST
HARRY FIELDING REID
➤ HYPO MEANS UNDER OR BENEATH
SPOTS WHERE THE BREAKS OCCUR
➤ ORIGIN OR THE CENTER OF THE EARTHQUAKE
LOCATED UNDERGROUND
FOCUS OR HYPOCENTER
➤ EPI MEANS SURFACE
EPICENTER
DIRECTLY ABOVE THE FOCUS OF AN EATHQUAKE
➤ WHERE THE EARTHQUAKE VIBRATIONS REACH FIRST
➤ MOST VIOLENT SHAKING OCCURS HERE
epicenter
-ENERGY THAT IS RELEASED IN AN EARTHQUAKE
SEISMIC WAVES
EARLY WARNING SIGNS
-USED TO MEASURED MOVEMENTS IN EARTH’S SURFACE
SEISMOGRAPH
WAS A BRITISH GEOLOGIST AND ENGINEER INVENTED A SIMPLE HORIZONTAL PENDELUM SEISMOGRAPH A MACHINE THAT RECORDS VIBRATIONS
working with EWING AND GRAY IN 1880. JOHN MILNE
EARLIEST SEISMOSCOPE WAS INVENTED BY THE CHINESE PHILOSOPHER
CHANG HENG IN A.D. 132
GROUND- MOTION DETECTION SENSOR
SEISMOMETER
-RECORD PRODUCED BY A SEISMOGRAPH ON A DISPLAY SCREEN OR PAPER PRINTOUT
SEISMOGRAM
TWO TYPES OF SEISMIC WAVES
body Wave and love wave
TRAVEL THROUGH THE INTERIOR OF THE EARTH
BODY WAVES-