Charles Francis Richter
Charles Francis Richter
Charles Francis Richterwas an American seismologist and physicist...
NationalityAmerican
ProfessionScientist
Date of Birth26 April 1900
CountryUnited States of America
although conditions depends distance fall generally intensity local pathway signal source strength
Intensity like signal strength will generally fall off with distance from the source, although it also depends on the local conditions and the pathway from the source to the point.
assigned range similar
This is very similar to astronomy where different magnitudes are assigned to the brightness of an astronomical object, depending on the range of wavelengths being measured.
emphasis factor horizontal ordinary structures vertical
Emphasis was usually put on the horizontal acceleration factor, for the simple reason that ordinary structures have a built-in safety factor for the vertical component; that is, gravity.
according ask building california earthquake less prediction progress reason toward
At least there is progress of California toward building new construction according to earthquake-resistant design. We would have less reason to ask for earthquake prediction if this was universal.
actual closely instrument involved tied tried
So we tried to keep the interpretation of the 'size of the earthquake' as closely tied to the actual instrument observations involved as possible.
above curves parallel quite rank roughly saw
I saw that I could now rank the earthquakes one above the other. Also, quite unexpectedly the attenuation curves were roughly parallel on the plot.
analysis consists consulting deal good problem proposed risk site starts winds work
A good deal of my consulting work consists of site analysis for proposed developments. The problem of assessing seismic risk starts at the geological-geophysical end and winds up at the engineering end.