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Web services: Arrivals

Output a list of arrivals associated to events in the ISC Bulletin, as either QuakeML, a CSV file or in IMS1.0 format. Arrivals may be selected by station (individual names or defined region), phase name, event time, event region, event magnitude, event depth. Returned data comprise of:

Phase data (station, phase, distance, back-azimuth, arrival-time, travel-time residual, etc.);
Prime hypocentre origin (time, lat, lon, depth);

An overview of the available web services guides can be found on the web services page.

Event arrivals: URL construction

USAGE:
http://www.gxjydl.com/cgi-bin/web-db-run?<output-format><request-type><arrival-limits><station-region><event-region><event-time-range>[<event-depth-limits>][<event-magnitude-limits>]

Each <query-option> is comprised of one or more parameters, which are described in detail below. Each parameter needs to be separated by an ampersand (&) as shown in the examples.

Queries or parameters in square brackets ([...]) are optional.

Example query 1:

Output arrivals from station WRA for phases P and Pg, where the arrival-time was time-defining. Search arrivals for all earthquakes in the ISC Bulletin between 2009-02-22 15:00:00 and 2009-04-22 15:00:00 where GCMT have computed a magnitude >= 5.5

QuakeML format:

http://www.gxjydl.com/cgi-bin/web-db-run?out_format=QuakeML&request=STNARRIVALS&stnsearch=STN&sta_list=WRA
                        &tdef=on&phaselist=P,PcP&searchshape=GLOBAL&start_year=2009
                        &start_month=02&start_day=22&start_time=15:00:00&end_year=2009&end_month=04&end_day=22&end_time=15:00:00
                        &min_mag=5.5&req_mag_agcy=GCMT&req_mag_type=Any

CSV file:

http://www.gxjydl.com/cgi-bin/web-db-run?out_format=CSV&request=STNARRIVALS&stnsearch=STN&sta_list=WRA&tdef=on&phaselist=P,PcP&searchshape=GLOBAL
                        &start_year=2009&start_month=02&start_day=22&start_time=15:00:00&end_year=2009&end_month=04&end_day=22
                        &end_time=15:00:00&min_mag=5.5&req_mag_agcy=GCMT&req_mag_type=Any

Example query 2:

Output arrivals from stations within a 10 degrees radius of Lat: 62 N; Lon: 114 W; for all S phases that are time-defining, from events in the reviewed ISC Bulletin between 2009-02-22 15:00:00 and 2009-04-22 15:00:00 where the body-wave magnitude (mb) associated to the prime hypocentre >= 5.5 and are within 80 degrees radius of Lat: 62 N; Lon: 114 W.

QuakeML format:

http://www.gxjydl.com/cgi-bin/web-db-run?out_format=CSV&request=STNARRIVALS&stnsearch=CIRC&stn_ctr_lat=62&stn_ctr_lon=-114
                        &max_stndist_units=deg&stnradius=10&tdef=on&phaselist=S&searchshape=CIRC&ctr_lat=62&ctr_lon=-114&max_dist_units=deg&radius=80&start_year=2009
                        &start_month=2&start_day=22&start_time=15:00:00&end_year=2009
                        &end_month=4&end_day=22&end_time=15:00:00&min_mag=5.5&req_mag_agcy=prime&req_mag_type=MB

CSV file:

http://www.gxjydl.com/cgi-bin/web-db-run?out_format=CSV&request=STNARRIVALS&stnsearch=CIRC&stn_ctr_lat=62&stn_ctr_lon=-114
                        &max_stndist_units=deg&stnradius=10&tdef=on&phaselist=S&searchshape=CIRC&ctr_lat=62&ctr_lon=-114&max_dist_units=deg&radius=80&start_year=2009
                        &start_month=2&start_day=22&start_time=15:00:00&end_year=2009
                        &end_month=4&end_day=22&end_time=15:00:00&min_mag=5.5&req_mag_agcy=prime&req_mag_type=MB

Description of query options:

`<output-format>`
Parameter name	Possible values	Description
`out_format=`	<QuakeML>\|<CSV>\|<IMS1.0>	QuakeML - XML stream. See QuakeML website for details; CSV: A CSV formatted file - one line per arrival; IMS1.0: An IMS1.0 associated arrivals output. See IMS1.0 documentation for details;

`<request-type>`
Parameter name	Possible values	Description
`request=`	<STNARRIVALS>	Specifies that the ISC Bulletin should be searched for arrivals. To limit arrivals from events within the Reviewed ISC Bulletin, see `<arrivals-limits>` below (`iscreview=on`).

`<arrivals-limits>`
Parameter name	Possible values	Description
`ttime=`	[<on>]	If set to 'on', arrivals will be only be output if they have an arrival-time. N.b. Some amplitude data, do not have arrival times with them.
`ttres=`	[<on>]	If set to 'on', arrivals will be only be output if they have a travel-time residual computed. N.b. travel-time residuals are only computed for ISC reviewed events, where the ISC is able to associate a travel-time to a valid phase (currently ak135), for an event. These residuals are corrected for elevation and ellipticity. Bounce-point and water depth corrections are also made for depth phases and hydroacoustic phases respectively.
`tdef=`	[<on>]	If set to 'on', arrivals will be only be output if they are time-defining phases. I.e. they were used in the computation of the ISC hypocentre. N.b. these arrivals only exist for events with an ISC authored hypocentre.
`iscreview=`	[<on>]	If set to 'on', arrivals will be only be output for events that are in the Reviewed ISC Bulletin. By default, the entire ISC Bulletin will be searched.

`<station-region>`
Parameter name	Possible values	Description
`stnsearch=`	<STN>\|<GLOBAL>\|<RECT>\|<CIRC>\|<FE>\|<POLY>	STN: Stations are restricted to specific station code(s); GLOBAL: Stations are not restricted by region (i.e. all available stations); RECT: Rectangular search of stations; CIRC: Circular search of stations; FE: Flinn-Engdahl region search of stations; POLY: Customised polygon search.
Dependent parameters if: `stnsearch=STN`
`sta_list=`	<CODE>	A valid station code. To search for available station codes, please check the station book in the International Registry of Seismograph Stations.
Dependent parameters if: `stnsearch=RECT`
`stn_bot_lat=`	-90 to 90	Bottom latitude of rectangular region
`stn_top_lat=`	-90 to 90	Top latitude of rectangular region
`stn_left_lon=`	-180 to 180	Left longitude of rectangular region
`stn_right_lon=`	-180 to 180	Right longitude of rectangular region
Dependent parameters if: `stnsearch=CIRC`
`stn_ctr_lat=`	-90 to 90	Central latitude of circular region
`stn_ctr_lon=`	-180 to 180	Central longitude of rectangular region
`max_stn_dist_units=`	<deg>\|<km>	Units of distance for a circular search: degrees or kilometres
`stn_radius=`	any float or integer	Radius for circular search region 0 to 180 if `max_stn_dist_units=deg` 0 to 20015 if `max_stn_dist_units=km`
Dependent parameters if: `stnsearch=FE`
`stn_srn=`	1 to 50	Seismic region number for a Flinn-Engdahl region search
`stn_grn=`	1 to 757	Geographic region number for a Flinn-Engdahl region search
Dependent parameters if: `stnsearch=POLY`
`stn_coordvals=`	lat1,lon1,lat2,lon2,lat3,lon3,lat4,lon4,lat1,lon1	Comma seperated list of coordinates for a desired polygon. Latitude needs to be before longitude. Coordinates in the western and southern hemispheres should be negative.

`<event-region>`
Parameter name	Possible values	Description
`searchshape=`	<GLOBAL>\|<RECT>\|<CIRC>\|<FE>\|<POLY>	GLOBAL: Events are not restricted by region; RECT: Rectangular search of events; CIRC: Circular search of events; FE: Flinn-Engdahl region search of events; POLY: Customised polygon search.
Dependent parameters if: `searchshape=RECT`
`bot_lat=`	-90 to 90	Bottom latitude of rectangular region
`top_lat=`	-90 to 90	Top latitude of rectangular region
`left_lon=`	-180 to 180	Left longitude of rectangular region
`right_lon=`	-180 to 180	Right longitude of rectangular region
Dependent parameters if: `searchshape=CIRC`
`ctr_lat=`	-90 to 90	Central latitude of circular region
`ctr_lon=`	-180 to 180	Central longitude of rectangular region
`max_dist_units=`	<deg>\|<km>	Units of distance for a circular search: degrees or kilometres
`radius=`	any float or integer	Radius for circular search region 0 to 180 if `max_dist_units=deg` 0 to 20015 if `max_dist_units=km`
Dependent parameters if: `searchshape=FE`
`srn=`	1 to 50	Seismic region number for a Flinn-Engdahl region search
`grn=`	1 to 757	Geographic region number for a Flinn-Engdahl region search
Dependent parameters if: `searchshape=POLY`
`coordvals=`	lat1,lon1,lat2,lon2,lat3,lon3,lat4,lon4,lat1,lon1	Comma seperated list of coordinates for a desired polygon. Latitude needs to be before longitude. Coordinates in the western and southern hemispheres should be negative.

`<event-time-range>`
Parameter name	Possible values	Description
`start_year=`	1900 to 2025	Starting year for events
`start_month=`	1 to 12	Starting month for events
`start_day=`	1 to 31	Starting day for events
`start_time=`	00:00:00 to 23:59:59	Starting time for events (HH:MM:SS)
`end_year=`	1900 to 2025	Ending year for events
`end_month=`	1 to 12	Ending month for events
`end_day=`	1 to 31	Ending day for events
`end_time=`	00:00:00 to 23:59:59	Ending time for events (HH:MM:SS)

`<event-depth-limits>` (Optional)
Parameter name	Possible values	Description
`min_dep=`	any float or integer	Minimum depth of events (km)
`max_dep=`	any float or integer	Maximum depth of events (km)
`null_dep=`	[<on>]	If set to 'on', events with no known depth will still be output if a `min_dep` or `max_dep` is specified.

`<event-magnitude-limits>` (Optional)
Parameter name	Possible values	Description
`min_mag=`	any float or integer	Minimum magnitude of events
`max_mag=`	any float or integer	Maximum magnitude of events.
`null_mag=`	[<on>]	If set to 'on', events with no known magnitude values will still be output if a `min_mag` or `max_mag` is specified.
`req_mag_type=`	<Any>\|<MB>\|<MS>\|<MW>\|<ML>\|<MD>	Limit events to specific magnitude types. Please note: the selected magnitude type will search for all possible magnitudes in that category: E.g. MB will search for mb, mB, Mb, mb1mx, etc
`req_mag_agcy=`	<Any>\|<prime>\|<CODE>	Limit events to magnitudes computed by the selected agency: Any: magnitudes will not be restricted by author; prime: this will limit magnitudes to those associated directly with the prime (preferred) hypocentre - this is usually but not always the same author as the prime hypocentre; CODE: restricts events with magnitudes computed by a specific agency (e.g. ISC, NEIC, GCMT, JMA, etc.). See here for a full list of agencies. If a specific CODE is selected, the magnitudes associated to the prime hypocentre will be output in addition to the selected magnitude author.