POSC Specifications: Epicentre Version 3.0
Logical Data Model
ENTITY
SEISMIC_SOURCE_FACILITY
SUBTYPE OF
(
geophysical_facility
);
array_base_length :
OPTIONAL
ndt_length
;
array_base_width :
OPTIONAL
ndt_length
;
dynamite_charge_size :
OPTIONAL
ndt_mass
;
element_count :
OPTIONAL
ndt_pint4
;
element_spacing :
OPTIONAL
ndt_length
;
gun_pressure :
OPTIONAL
ndt_pressure
;
gun_volume :
OPTIONAL
ndt_volume
;
nominal_source_depth :
OPTIONAL
ndt_length
;
ref_case_element_orientation :
OPTIONAL
ref_case_element_orientation
;
ref_seismic_vibrator_sweep :
OPTIONAL
ref_seismic_vibrator_sweep
;
row_count :
OPTIONAL
ndt_pint2
;
row_spacing :
OPTIONAL
ndt_length
;
source_between_receiver :
OPTIONAL
ndt_logical
;
vibrator_moveup_distance :
OPTIONAL
ndt_length
;
vibrator_sweep_count :
OPTIONAL
ndt_pint1
;
vibrator_sweep_duration :
OPTIONAL
ndt_seismic_time
;
vibrator_sweep_end_frequency :
OPTIONAL
ndt_frequency
;
vibrator_sweep_start_frequency :
OPTIONAL
ndt_frequency
;
vibrator_sweep_taper_length :
OPTIONAL
ndt_seismic_time
;
UNIQUE
si:
facility
.identifier,
facility
.ref_existence_kind,
geophysical_facility
.identifying_context,
general_facility
.identifying_facility;
END_ENTITY
; (* seismic_source_facility *)
Generated on Tue Jul 10 19:39:06 2001
© Copyright 2001 POSC. All rights reserved.