A reference point on a facility whose location may be fixed or moving. If the facility is moving then any location defined here should specify the fixed relative location in a spread or a positioning network.

name (O, K: ndt_name)

The identifying label of a point.


seismic_facility (M, K: seismic_facility(seismic_facility_node))

The facility with which this node is associated. Each seismic_facility_node must be defined for one seismic_facility.


description (O: ndt_comment)

A textual description of the point.


data_collection (I, V: SET[0:?] data_collection(collection_content))

Indicates the data collections that include this instance of E and P data. Each seismic_facility_node may be a member of one or more data_collection. Inherited from e_and_p_data.


datum_for_ranking (I, V: SET[0:?] object_ranking(base_object))

Indicates that an object is being used as a basis for comparison with another object. Each seismic_facility_node may datum for ranking one or more object_ranking. Inherited from object_of_interest.


earth_model (I, V: SET[0:?] earth_model(spatial_object))

Indicates various earth models which include this spatial representation. Each seismic_facility_node may be part of one or more earth_model. Inherited from spatial_object.


edge (I, V: SET[0:?] edge(vertex))

Defines the edges for which this vertex forms part of the boundary. Each seismic_facility_node may bind one or more edge. Inherited from vertex.


graphical_element (I, V: SET[0:?] graphical_element(depicted_object))

Specifies one or more graphical elements which are depicting this data item. Each seismic_facility_node may be depicted by one or more graphical_element. Inherited from e_and_p_data.


intersection_role (I, V: SET[0:?] space_time_operation(intersecting_object))

Indicates a space/time operation for which the object is involved as an intersecting agent. For projection, this is the screen on which an object is being projected. For proximity, this is the magnet object. Each seismic_facility_node may be the intersecting object for one or more space_time_operation. Inherited from topological_object.


local_vertical_datum (I, V: SET[0:?] local_vertical_datum(earth_point))

Indicates the usage of this earth point to establish one or more vertical datum planes Each seismic_facility_node may intersect one or more local_vertical_datum. Inherited from earth_point.


object_of_ranking (I, V: SET[0:?] object_ranking(ranked_object))

Indicates that an object is being classified in a rank order based on its characteristics. Each seismic_facility_node may object of ranking one or more object_ranking. Inherited from object_of_interest.


observed_baseline (I, V: SET[0:?] observation_definition(baseline_node))

This defines the set of observations where this point was the baseline node for a positioning facility. Each seismic_facility_node may be baseline node in one or more observation_definition. Inherited from earth_surface_point.


observed_reference (I, V: SET[0:?] observation_definition(reference_node))

This defines the set of observations where this point was the reference node for a positioning facility. Each seismic_facility_node may be the reference node in one or more observation_definition. Inherited from earth_surface_point.


other_composite_spatial_object (I, V: SET[0:?] other_composite_spatial_object(composite_object))

Defines the set of composite spatial objects of which this spatial object is a component. Each seismic_facility_node may be a component of one or more other_composite_spatial_object. Inherited from spatial_object.


primary_role (I, V: SET[0:?] space_time_operation(primary_object))

Indicates a space/time operation for which the object is involved as a primary agent. For degeneration, this object is being degenerated. For projection, this object is being projected onto another object. For proximity, this is the container object. Each seismic_facility_node may be the primary object for one or more space_time_operation. Inherited from topological_object.


primary_topological_relationship (I, V: SET[0:?] topological_relationship(primary_topological_object))

Indicates a topological relationship in which the topologic object has the role of primary agent. For an object intersection type of "inside" this is the containing role (e.g., if a city is inside a county then the county would be the primary agent). For all other object intersection types the roles are symmetrical and both relationships must be searched for a particular object. For example, if a wellbore and a formation overlap then either could be chosen as the primary agent with the other chosen as the secondary agent. Each seismic_facility_node may be primarily involved in one or more topological_relationship. Inherited from topological_object.


pty_location_1d (V: SET[0:?] pty_location_1d(seismic_facility_node))

Each seismic_facility_node may have a property of one or more pty_location_1d.


pty_location_2d (V: SET[0:?] pty_location_2d(seismic_facility_node))

Each seismic_facility_node may have a property of one or more pty_location_2d.


pty_magnetic_declination (I, V: SET[0:?] pty_magnetic_declination(earth_surface_point))

Each seismic_facility_node may have a property of one or more pty_magnetic_declination. Inherited from earth_surface_point.


pty_magnetic_inclination (I, V: SET[0:?] pty_magnetic_inclination(earth_point))

Each seismic_facility_node may have a property of one or more pty_magnetic_inclination. Inherited from earth_point.


secondary_topological_relationship (I, V: SET[0:?] topological_relationship(secondary_topological_object))

Indicates a topological relationship in which the object is in the role of secondary agent. For an object intersection type of "inside" this is the contained role (e.g., if a well is inside a field then the well would be the secondary agent). For all other object intersection types the roles are symmetrical and both relationships must be searched for a particular object. For example, if a wellbore and a formation overlap then either could be chosen as the secondary agent with the other chosen as the primary agent. Each seismic_facility_node may be involved in one or more topological_relationship. Inherited from topological_object.


source_space_time_operation (I, V: BAG[0:1] space_time_operation(resulting_object))

Indicates the space/time operation from which a topological object was the result. For addition, this is the union of two objects. For degeneration, this is the degenerate object. Each seismic_facility_node may be the result of one space_time_operation. Inherited from topological_object.


vertical_datum_offset (I, V: SET[0:?] vertical_datum_offset(earth_point))

These are the offsets between vertical datums that are defined as passing through this point. This earth point is being used to locate the offset. Each seismic_facility_node may be used to define one or more vertical_datum_offset. Inherited from earth_point.

Local rules:

Uniqueness Constraint
name, seismic_facility
Supertype path(s):
e_and_p_data > object_of_interest > technical_object > seismic_facility_node.
topological_object > spatial_object > simple_spatial_object > vertex > earth_point > earth_surface_point > seismic_facility_node.

Entity projects as table SEIS_FCL_NODE.

Referenced in Diagrams:

• CT2: Earth Surface Topology (0712)
• GPA3: Seismic Facilities
• GPA4: Marine Positioning