OR/18/015 Appendix 1 - Key to catalogue encoding: Difference between revisions
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[[Category: OR/18/015 Bulletin of British Earthquakes 2017 | | [[Category: OR/18/015 Bulletin of British Earthquakes 2017 | 13]] |
Revision as of 15:06, 3 December 2019
Galloway, D D. 2018. Bulletin of British Earthquakes 2017. British Geological Survey. (OR/18/015). |
YearMoDy | Year, month and day of event. |
HrMn Secs | Time of occurrence of event in hours, mins and secs, (UTC). |
Lat | Latitude of the event, positive latitude indicates North. |
Lon | Longitude of the event, positive longitude indicates East. |
kmE | UK National Grid Reference in kilometres east of grid origin. |
kmN | UK National Grid Reference in kilometres north of grid origin. |
Dep | Depth of the hypocentre in kilometres. |
Mag | Richter local magnitude of the event. |
Locality | A geographical indication of the epicentral area, usually the nearest town followed by the region. A key to the abbreviations used in the locality column are given below. |
Int | Maximum EMS intensity. 2, 3, 4, 5 etc. describes the maximum EMS intensity produced by the event. |
Comments | Additional comments about the event e.g.: C/F, see below under comments abbreviations. |
The following abbreviations are extracted from the output of the location program HYPOCENTER (Leinart and Havskov, 1995[1]) | |
No | Total number of P and S readings used in the event location. |
Gap | Largest azimuthal separation in degrees between stations. |
RMS | Root Mean Square of the travel time residuals in seconds. |
ERH | Standard error of the epicentre in kilometres. When this column is blank, the error is large and indeterminate. |
ERZ | Standard error of the focal depth in kilometres. When this column is blank, the error is large and indeterminate. |
Locality and Comments abbreviations | |
Sonic | Sonic event |
Worcs | Worcestershire |
Oxon | Oxfordshire |
D & G | Dumfries & Galloway |
Carmarths | Carmarthenshire |
Glos | Gloucestershire |
Lincs | Lincolnshire |
Salop | Shropshire |
E Dunbarton | East Dunbartonshire |
… | and felt elsewhere |
References
- ↑ Lienert, B R E, and Havskov, J. 1995. A computer program for locating earthquakes both locally and globally, Seis. Res. Lett., 66, 26–36.