obspy.core.event.source.MomentTensor

class MomentTensor(force_resource_id=True, *args, **kwargs)[source]

Bases: obspy.core.event.base.__MomentTensor

This class represents a moment tensor solution for an event. It is an optional part of a FocalMechanism description.

Parameters
  • resource_id (ResourceIdentifier) – Resource identifier of MomentTensor.

  • force_resource_id (bool, optional) – If set to False, the automatic initialization of resource_id attribute in case it is not specified will be skipped.

  • derived_origin_id (ResourceIdentifier) – Refers to the resource_id of the Origin derived in the moment tensor inversion.

  • moment_magnitude_id (ResourceIdentifier, optional) – Refers to the publicID of the Magnitude object which represents the derived moment magnitude.

  • scalar_moment (float, optional) – Scalar moment as derived in moment tensor inversion. Unit: Nm

  • scalar_moment_errors (QuantityError) – AttribDict containing error quantities.

  • tensor (Tensor, optional) – Tensor object holding the moment tensor elements.

  • variance (float, optional) – Variance of moment tensor inversion.

  • variance_reduction (float, optional) – Variance reduction of moment tensor inversion, given in percent (Dreger 2003). This is a goodness-of-fit measure.

  • double_couple (float, optional) – Double couple parameter obtained from moment tensor inversion (decimal fraction between 0 and 1).

  • clvd (float, optional) – CLVD (compensated linear vector dipole) parameter obtained from moment tensor inversion (decimal fraction between 0 and 1).

  • iso (float, optional) – Isotropic part obtained from moment tensor inversion (decimal fraction between 0 and 1).

  • greens_function_id (ResourceIdentifier, optional) – Resource identifier of the Green’s function used in moment tensor inversion.

  • filter_id (ResourceIdentifier, optional) – Resource identifier of the filter setup used in moment tensor inversion.

  • source_time_function (SourceTimeFunction, optional) – Source time function used in moment-tensor inversion.

  • data_used (list of DataUsed, optional) – Describes waveform data used for moment-tensor inversion.

  • method_id (ResourceIdentifier, optional) – Resource identifier of the method used for moment-tensor inversion.

  • category (str, optional) – Moment tensor category. See MomentTensorCategory for allowed values.

  • inversion_type (str, optional) – Moment tensor inversion type. Users should avoid to give contradictory information in inversion_type and method_id. See MTInversionType for allowed values.

  • comments (list of Comment, optional) – Additional comments.

  • creation_info (CreationInfo, optional) – Creation information used to describe author, version, and creation time.

Note

For handling additional information not covered by the QuakeML standard and how to output it to QuakeML see the ObsPy Tutorial.

Attributes

__abstractmethods__

__dict__

__doc__

__hash__

__module__

__reversed__

__slots__

__weakref__

list of weak references to the object (if defined)

defaults

do_not_warn_on

item

key

readonly

warn_on_non_default_key

Public Methods

clear

copy

get

items

keys

pop

If key is not found, d is returned if given, otherwise KeyError is raised.

popitem

as a 2-tuple; but raise KeyError if D is empty.

setdefault

update

If E present and has a .keys() method, does: for k in E: D[k] = E[k] If E present and lacks .keys() method, does: for (k, v) in E: D[k] = v In either case, this is followed by: for k, v in F.items(): D[k] = v

values

Private Methods

Warning

Private methods are mainly for internal/developer use and their API might change without notice.

_pretty_str

Return better readable string representation of AttribDict object.

_repr_pretty_

Special Methods

__bool__

__contains__

__deepcopy__

reset resource_id’s object_id after deep copy to allow the object specific behavior of get_referred_object

__delattr__

__delitem__

__dir__

Default dir() implementation.

__eq__

Two instances are considered equal if all attributes and all lists are identical.

__format__

Default object formatter.

__getattr__

Py3k hasattr() expects an AttributeError no KeyError to be raised if the attribute is not found.

__getitem__

__getstate__

__init__

__init_subclass__

This method is called when a class is subclassed.

__iter__

__len__

__ne__

__new__

Create and return a new object.

__nonzero__

__reduce__

Helper for pickle.

__reduce_ex__

Helper for pickle.

__repr__

__setattr__

Custom property implementation that works if the class is inheriting from AttribDict.

__setitem__

__setstate__

__sizeof__

Size of object in memory, in bytes.

__str__

Fairly extensive in an attempt to cover several use cases.

__subclasshook__

Abstract classes can override this to customize issubclass().