Defines vertex behavior for a node in a seismic acquisition array. This allows, for example, the semantics of a particular seismic station to be used as the origin for a coordinate system. This entity is not intended to substitute for the arrays in Seismic Geometry Set. If the detailed acquisition arrays are not defined (i.e., a uid does not exist) then the name which would otherwise be assigned to the node can be used as the identifier of the node and the Pty Location 2D may specify the location of the node.

seismic_geometry_set (M, K: seismic_geometry_set(seismic_acquisition_vertex))

Specifies the geometry set which contains the array whose node is being referenced by this instance. For example, the geometry set which contains the source event uid attribute that the specified uid value is a part of. Each seismic_acquisition_vertex must represent a node in one seismic_geometry_set.


node_uid (O, K: ndt_user_unique_identifier)

Defines the uid value of the node that this vertex represents. This value must match a value in the attribute implied by ref aquisition vertex in the specified geometry set.


node_name (O, K: ndt_name)

Defines the name which would be associated with the node if the detailed acqusition arrays were defined in the associated geometry set.


ref_seismic_acquisition_vertex (M, K: ref_seismic_acquisition_vertex)

Defines the type of array that the node uid represents. This values implis a particular attribute in the associated geometry set. For exampld, "seismic station" implies that the node represents a node in the array structure defined by attribute seismic station uid. Each seismic_acquisition_vertex must represent node from array of one ref_seismic_acquisition_vertex.


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_acquisition_vertex 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_acquisition_vertex 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_acquisition_vertex 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_acquisition_vertex 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_acquisition_vertex 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_acquisition_vertex 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_acquisition_vertex 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_acquisition_vertex 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_acquisition_vertex 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_acquisition_vertex 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_acquisition_vertex 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_acquisition_vertex 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_acquisition_vertex may be primarily involved in one or more topological_relationship. Inherited from topological_object.


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

Defines the location of the node when its location is not defined in the acquisition arrays using the appropriate 2D coordinate system. Each seismic_acquisition_vertex 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_acquisition_vertex 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_acquisition_vertex 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_acquisition_vertex 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_acquisition_vertex 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_acquisition_vertex may be used to define one or more vertical_datum_offset. Inherited from earth_point.

Local rules:

Uniqueness Constraint
seismic_geometry_set, node_uid, node_name, ref_seismic_acquisition_vertex
Instance Value Constraint
For each instance, either NODE UID or NODE NAME may be specified but not both.
Supertype path(s):
e_and_p_data > object_of_interest > technical_object > seismic_acquisition_vertex.
topological_object > spatial_object > simple_spatial_object > vertex > earth_point > earth_surface_point > seismic_acquisition_vertex.

Entity projects as table SEISMIC_ACQ_VRTX.

Referenced in Diagrams:

• GPA2: Seismic Grids (0734)