1. 1 Purpose and Scope of unimarc 7 2 Format Maintenance 7

122   CODED DATA FIELD: TIME PERIOD OF ITEM CONTENT

Field Definition

This field contains a formatted indication of the period covered by the item.

Occurrence

Optional. Repeatable only to distinguish between multiple single dates and a range of dates (EX 1).

Indicators

 Indicator 1:  Number of Dates Indicator

0   Single dated item

1   Multiple single dates

2  Range of dates

 Indicator 2:  blank (not defined)

Subfields

$a Time period, 9999 B.C. to present (EX 2,3,4). Repeatable (EX 1)

Notes on Field Contents

Subfield $a consists of a minimum of 5 characters and a maximum of 11. The components are:

$a/0 Era identifier

One alphabetic character (Mandatory):

c = date falls before the year 1 in the Gregorian calendar, i.e. B.C.

d = date falls after the year 1 in the Gregorian calendar, i.e. A.D.

$a/1-4 Year

Four numeric characters, right justified; unused positions contain zeros. Mandatory.

$a/5-6 Month

Two numeric characters, right justified; unused positions contain zeros. Optional.

$a/7-8 Day

Two numeric characters, right justified; unused positions contain zeros. Optional.

$a/9-10 Time

Two numeric characters, right justified; unused positions contain zeros. Based on a 24 hour clock, local time, rounded to the nearest whole hour. Optional.

If one optional code is used, all the earlier optional codes must be used.

Related Fields

100 GENERAL PROCESSING DATA, Date of publication (character positions 8-16)

This field is used as well as or instead of field 122 where the date of issue is the same as the time period of item content.

661 TIME PERIOD CODE

This field contains the Time Period Code, indicating only the decades covered by the item. It may be used as well as or instead of field 122.

Examples

EX 1: 122 2#$ad1971$ad1979
122 0#$ad1986
Codes for a map surveyed between 1971 and 1979 and then revised to add 1986 information.

EX 2: 122 0#$ad16051105

The code for Guy Fawkes' Gunpowder Plot, 5 November 1605

EX 3: 122 0#$ad1976080214

The situation date (2 August 1976, 14:08 hours) of a remote sensing image

EX 4: Full record example

001 990521053
100 ##$a19990521b19981998 y0scry0191 ba
101 0#$ascr$aeng
102 ##$aHR
110 ##$aaka 0xx0tx
122 2#$ad1992$ad1997
200 0#$aGodišnje izvješće ...$fRepublika Hrvatska, Državni zavod za intelektualno vlasništvo$dAnnual report ...$fRepublic of Croatia, State Intellectual Property Office$g
207 #0$a1992/97(1998)
210 ##$aZagreb$cDržavni zavod za intelektualno vlasništvo Republike Hrvatske$d1998
215 ##$d30 cm
300 ##$aTekst usporedo na hrv. i engl. jeziku
326 ##$aGodišnje
510 1#$aAnnual report / Republic of Croatia State Intellectual Property Office$zeng
532 13$aGodišnje izvješće (Državni zavod za intelektualno vlasništvo Republike Hrvatske)
712 02$3990426016$aDržavni zavod za intelektualno vlasništvo Republike Hrvatske$cZagreb
801 #0$aHR$bNSK$gHR PPIAK

The Annual Report published in 1998 for the years 1992 to 1997. The Publication Date 1 and Publication Date 2 in 100$a/8-16 are 1998 because only one issue was published. The coverage dates are recorded in 122 field.

123   CODED DATA FIELD:
CARTOGRAPHIC MATERIALS – SCALE AND CO-ORDINATES

Field Definition

This field contains the scale and co-ordinate data as entered in field 206 but in coded form.

Occurrence

Mandatory for cartographic material. Repeatable when an item contains material in different scales and with different co-ordinates.

Indicators

 Indicator 1:  Type of Scale Code Indicator

This indicator shows whether single or multiple scales are recorded:

0   Scale indeterminable

1 Single scale

2 Multiple scales

3 Range of scales

4 Approximate scale

 Indicator 2:  blank (not defined)

Subfields

$a Type of Scale (Mandatory)

A one character code indicating the type of scale with the following values:

a  =   linear scale

b  =   angular scale

z  =   other type of scale (e.g., time scale, quantitative statistical scale)

Not repeatable.

$b Constant Ratio Linear Horizontal Scale

The horizontal scale in the form of the denominator of a representative fraction. Used for planetary as well as terrestrial cartographic items. Repeatable.

$c Constant Ratio Linear Vertical Scale

The vertical scale in the form of the denominator of a representative fraction. Used for planetary as well as terrestrial items. Repeatable.

$d Co-ordinates – Westernmost Longitude

$e Co-ordinates – Easternmost Longitude

$f Co-ordinates – Northernmost Latitude

$g Co-ordinates – Southernmost Latitude

Co-ordinates for planetary or terrestrial items. Each subfield is fixed at 8 characters and is not repeatable. Each contains the following data:

Character position 0

Hemisphere: one character code:

w  =  west

e  =  east

n  =  north

s  =  south

Character positions 1 to 3

Degree: 3 numeric characters, right justified, filled with zeros

Character positions 4 to 5

Minute: 2 numeric characters, right justified, filled with zeros

Character positions 6 to 7

Second: 2 numeric characters, right justified, filled with zeros

$h Angular Scale

The angular scale of celestial maps in the form of a 4 character number right justified and filled with zeros, giving the scale in terms of millimetres to a degree. Repeatable.

$i Declination – Northern Limit

$j Declination – Southern Limit

$k Right ascension – Eastern Limits

$m Right ascension – Western Limits

Co-ordinates for celestial cartographic items. Subfields are not repeatable. Subfields $i and $j are each 8 characters long and contain the same components as subfields $f and $g (see above) except that character position 0 contains a plus sign (for the northern celestial hemisphere) or a minus sign (for the southern celestial hemisphere). Subfields $k and $m are each 6 characters long and contain the following data:

Character positions 0 to 1

Hour: 2 numeric characters, right justified, filled with zeros

Character positions 2 to 3

Minute: 2 numeric characters, right justified, filled with zeros

Character positions 4 to 5

Second: 2 numeric characters right justified, filled with zeros

$n Equinox

The equinox for celestial cartographic items with the year entered according to the Gregorian calendar as a four character date right justified with zeros. Not repeatable.

$o Epoch

The epoch for celestial cartographic items with the year entered according to the Gregorian calendar as a four character date right justified with zeros. Not repeatable.

$p Planet to which the field applies.

This subfield indicates whether the co-ordinates recorded in subfields $d-$g apply to the Earth or to another planet, or to a satellite of these bodies. The planet is expressed in position 0-1, while position 2 indicates whether the body is a satellite of the planet coded on pos. 0-1.

Character positions 0-1: Planet: two-character code:

ea  =  Earth

ju  =  Jupiter
ma  =  Mars
me  =  Mercury
ne  =  Neptune
pl  =  Pluto
sa  =  Saturn
ur  =  Uranus
ve  =  Venus
zz  =  other

Character position 2: Satellite: one-character code:

s The body whose co-ordinates are recorded in subfields $d-$g is a satellite of the planet coded on pos. 0-1.

y Not applicable: the body whose co-ordinates are recorded in subfields $d-$g is the planet itself, as coded on pos. 0-1.

This subfield is mandatory, except for cartographic materials relating to the earth and celestial charts. Not repeatable.

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