Data Description for Utsu's JIS Significant earthquake
catalog:

This catalog covers the historical earthquakes through-
out the world from 3000 B.C. to 1994 A.D. The events are
gathered from scholarly sources, regional, historical and
worldwide catalogs. In general only one listing per event
is included. The original catalog is available on the
University of Tokyo ftp anonymous account:

	ftp.eri.u-tokyo.ac.jp
	
The catalog covers the world well, with a special
emphasis on Japanese historical earthquakes.

	
Some of the flags listed in this catalog are:

Date: A "?" preceding the source and date indicates the
event is questionable.

Time: The time is either Local, unknown, or given in
Greenwich (Universal Coordinated time) Flags are:
   L: local time
   U: Universal Coordinated time
   n: no time type is given

Epicenter: Negative values are South of the equator or
West of Greenwich, Positive values are north of the
equator or east of Greenwich.

Depth: Depth is given either as a value (km beneath
the surface or as a Letter code:
    S(s) = shallow
    n = normal (33 km)
    * = poor or unknown observation
    
Magnitude: Most magnitudes are given as Mw values.

Deaths: Where know, the number of deaths are listed. The
death toll is the most likely value from a number of
sources.
  The value -9 (or other negative number) represents
  an unknown number of dead.
  
Injuries: Additional injuries or casualties in the
earthquake.
  The value -9 (or other negative number) represents
  an unknown number of injuries.
  
Damage: Damage is given by a series of descriptive terms:
  These terms approximate the amount of damage observed.
  
          insi = insignificant - little observed damage
          limi = limited, slight or minor damage (< $1 million)
          some = Some damage observed (can be misspelled somm)
          mode = Moderate damage roughly $1 - $5 million
          cons (also cond) = considerable damage about $5 - $15 
            million
          seve = Severe, major, extensive or heavy damage
            roughly between $15 and $50 million
          extr = Extreme, or catastrophic damage (generally
            more than $50 million )
            
  The value -9 (or other negative number) represents
  an unknown amount of damage.s.
      
      The Japanese also employ a local Damage scale for 
      Japanese historic Earthquakes - This is labeled as
      follows:
           D1 = insignificant
           D2 = limited
           D3 = some
           D4 = moderate
           D5 = considerable
           D6 = severe
           D7 = extreme
           
Comments on Location: Description of the location of the
earthquake and damage in geographical terms.