origin

The origin table contains information describing a derived or reported origin for a partic­ular event.

FIELD

COLUMN

STORAGE

EXTERNAL

CHARACTER

DESCRIPTION

NUMBER

TYPE

FORMAT

POSITION

1

lat

f1oat(24)

f11.4

1-11

estimated latitude

2

Ion

f1oat(24)

f11.4

13-23

estimated longitude

3

depth

f1oat(24)

f9.4

25-33

estimated depth

4

time

f1oat(53)

f17.5

35-51

epoch time

5

orid

number(9)

i9

53-61

origin identifier

6

evid

number(9)

i9

63-71

event identifier

7

jdate

number(8)

i8

73-80

julian date

8

nass

number(4)

i4

82-85

number of associated phases

9

ndef

number(4)

i4

87-90

number of locating phases

10

ndp

number(4)

i4

92-95

number of depth phases

11

gm

number(8)

i8

97-104

geographic region number

12

sm

number(8)

i8

106-113

seismic region number

13

etype

varchar2(7)

a7

115-121

event type

14

depdp

f1oat(24)

f9.4

123-131

estimated depth from depth phases

15

dtype

varchar2( 1)

a1

133-133

depth method used

16

mb

f1oat(24)

f7.2

135-141

body wave magnitude

17

mbid

number(9)

i9

143-151

Mb magnitude identifier

18

ms

f1oat(24)

f7.2

153-159

surface wave magnitude

19

msid

number(9)

i9

161-169

Ms magnitude identifier

20

ml

f1oat(24)

f7.2

171-177

local magnitude

21

mUd

number(9)

i9

179-187

ML magnitude identifier

22

algorithm

varchar2( 15)

a15

189-203

location algorithm used

23

auth

varchar2(15)

a15

205-219

source/originator

24

commid

number(9)

i9

221-229

comment identifier

25

lddate

date

a19

231-249

load date



Keys:

Primary

lat, lon, depth, time, auth


Unique

orid


Foreign

evid, mbid, msid, mlid, commid

Data:

Descriptive

nass, ndef, ndp, gm, sm, etype


Mesurement

lat, lon, depth, time, jdate, depdp, dtype, mb, mbid, ms, msid, ml, mlid


Administrative

algorithm, auth, lddate