event

class dsmpy.event.Event(event_id, latitude, longitude, depth, mt, centroid_time, source_time_function)

Represent an earthquake point-source.

Parameters

• event_id (str) – GCMT event name

• latitude (float) – centroid geographic latitude [-90, 90] in degree

• longitude (float) – centroid longitude [-180, 180] in degree

• depth (float) –

• mt (MomentTensor) – moment tensor

• source_time_function (SourceTimeFunction) – SourceTimeFunction

• object –

event_id

GCMT event name

Type

str

latitude

Type

float

[-90, 90] in degree

longitude

centroid longitude

Type

float

[-180, 180] in degree

depth

Type

float

mt

moment tensor

Type

MomentTensor

source_time_function

SourceTimeFunction

Type

SourceTimeFunction

object

centroid_time

centroid time.

Type

datetime

classmethod event_from_catalog(cat, event_id)

Build Event from GCMT catalog.

Parameters

• cat (ndarray) – event catalog.

• pydsm.utils.cmtcatalog.read_catalog() (see) –

• event_id (str) – GCMT event identifier

• (e.g. –

• '201906291959A') –

Returns

Event object.

Return type

event (Event)

get_azimuth(station)

Returns the source-station azimuth in degrees.

Parameters

station (Station) – seismic station

Returns

azimuth in degrees

Return type

float

get_backazimuth(station)

Returns the station-source backazimuth in degrees.

Parameters

station (Station) – seismic station

Returns

backazimuth in degrees

Return type

float

get_epicentral_distance(station)

Returns the epicentral distance in degrees.

Parameters

station (Station) – station

Returns

epicentral distance in degrees

Return type

float

get_epicentral_distance_(sta_lat, sta_lon)

Returns the epicentral distance in degrees.

Parameters

• sta_lat (float) – station latitude in degrees

• sta_lon (float) – station longitude in degrees

Returns

epicentral distance in degrees

Return type

float

class dsmpy.event.MomentTensor(Mrr, Mrt, Mrp, Mtt, Mtp, Mpp, Mw=None)

Represent a point-source moment tensor.

classmethod from_dsm_array(mt_arr)

Create a MomentTensor from the mt array from DSM pinput (assume the DSM order for mt component).

Parameters

mt_arr (ndarray) – moment tensor array

Returns

moment tensor

Return type

mt (MomentTensor)