Entity earth_surface_point

• An earth point which is constrained to be located in close proximity to the surface of the Earth.

Subtypes:

general_earth_surface_point, seismic_facility_node, facility_reference_point, well_surface_point, legal_survey_point

Attribute                                 Flags   Data Type

From earth_point:
   secondary_topological_relationship     IV      set[0 .. N] of (topological_relationship)

                                          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. 

   primary_topological_relationship       IV      set[0 .. N] of (topological_relationship)

                                          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.

   intersection_role                      IV      set[0 .. N] of (space_time_operation)

                                          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. 

   primary_role                           IV      set[0 .. N] of (space_time_operation)

                                          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. 

   source_space_time_operation            IV      bag[0 .. 1] of (space_time_operation)

                                          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. 

   other_composite_spatial_object         IV      set[0 .. N] of (other_composite_spatial_object)

                                          Defines the set of composite spatial objects of
                                          which this spatial object is a component. 

   earth_model                            IV      set[0 .. N] of (earth_model)

                                          Indicates various earth models which include this
                                          spatial representation. 

   edge                                   IV      set[0 .. N] of (edge)

                                          Defines the edges for which this vertex forms
                                          part of the boundary. 

   vertical_datum_offset                  IV      set[0 .. N] of (vertical_datum_offset)

                                          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.

   pty_magnetic_inclination               IV      set[0 .. N] of (pty_magnetic_inclination)

                                          may have a property of 

   local_vertical_datum                   IV      set[0 .. N] of (local_vertical_datum)

                                          Indicates the usage of this earth point to establish
                                          one or more vertical datum planes 


observed_baseline                         V       set[0 .. N] of (observation_definition)

                                          This defines the set of observations where this
                                          point was the baseline node for a positioning
                                          facility. 

observed_reference                        V       set[0 .. N] of (observation_definition)

                                          This defines the set of observations where this
                                          point was the reference node for a positioning
                                          facility. 

pty_magnetic_declination                  V       set[0 .. N] of (pty_magnetic_declination)

                                          may have a property of 

End of entity earth_surface_point

M - mandatory, U - unique, I - inherited, V - inverse, N - named type