International Registry of Seismograph Stations
maintained jointly by
International Seismological Centre & World Data Center for Seismology, Denver



Station details: ================
Code: ALQ
Latitude: 34.94250
Longitude: -106.45750
Elevation: 1849.0
Depth:
Name: Albuquerque
Region: New Mexico,U.S.A.
Status:

Arrival picks statistics

Travel Time Analysis

On the top graph every dot represents the median residual for one month of data. The green line is the overall median; the orange line shows the standard deviation (smad) based on the median absolute deviation (mad), whilst the red line shows twice the standard deviation (2 * smad). The bottom graph shows the number of residuals for each month. The red columns show the number of residuals whose median (for that month) is outside two standard deviations from the overall median (2 * smad). Red dots indicate a possible clock error.

Travel time residuals

Amplitude analysis

On the top graph every dot represents the median value for that month of data. The green line is the overall median; the orange line shows the standard deviation (smad) based on the median absolute deviation (mad), whilst the red line (if present) shows twice the standard deviation (2 * smad). The bottom graph shows the number of observations for each month. Any red columns show those observations whose monthly median value is greater than twice the standard deviation (2 * smad) from the overall (running) median (shown in the top graph by red dots). Red dots indicate a possible calibration error.


Station comments: ================= XC1R4-WWV WWSS opened 19611117 HGLP 19720901-19780717 DWSS 19810302-19820802 USNN 19920115-19981106 Data at the ISC for 40 years between 1961 and 2022. Known station history: ====================== First and Last use refers to the time period in which the coordinates were used by the ISC. Code Station name/Region Latitude Longitude Elevation Depth First use Last use ================================================================================================================================ ALQ Albuquerque 34.94250 -106.45700 1849.0 25-08-1999 25-08-1999 New Mexico
International Seismological Centre
Pipers Lane, Thatcham, Berkshire
United Kingdom RG19 4NS
voice: +44 (0)1635 861022
fax: +44 (0)1635 872351

web site: http://www.isc.ac.uk/
e-mail: station_reg@isc.ac.uk