North Baja Transect

Summary

Introduction

The North Baja Transect (NBT) stations, a collaborative effort by el Centro de Investigación Científica y de Educación Superior de Ensenada in México, San Diego State University, the Southern California Earthquake Center, the University of California, San Diego, and the University of Nevada at Reno, ran from October 1997 through June 1998. Nine of the 11 temporary three-component broadband stations used Guralp CMG40T seismometers, with response flat to velocity in the band 0.03-16 Hz. Stations SAFE and PUPE used Guralp CMG3ESP seismometers, with response flat to velocity in the 0.01-16 Hz (SAFE) and 0.03-16 Hz (PUPE) bands. Each station was equipped with a 24-bit digitizer recording at 40 samples per second. To investigate the relation between Moho depth and topography, the stations were positioned in northern Baja California, México, south of the Transpeninsular Strike-slip Province with 15-km spacing along an approximate east-west transect at 31°N. Six of the stations traversed the Stable Central Peninsula, where elevations range from nearly sea level at the Pacific coast to just under 3 km at the axis of the Peninsular Ranges. The other five stations were located east of the Sierra San Pedro Mártir fault in the Gulf Extensional Province, which included one station on the island of Roca Consag in the Gulf of California and one on the mainland México side of the Gulf at Puerto Peñasco. Most stations ran for about a 6-month period, with the exception of the island instrument, ROKO, which recorded for about a month before being disabled by sea lions. Despite the high noise level at this station, a few teleseismic events were recorded during its brief life span. Over the deployment period, the remaining stations recorded 15 large teleseismic events in the epicentral distance range 30° < Δ < 100°, 11 of which were Mw > 6.5, that were suitable for use in the analysis.

Station Map

Station map

Station List

(plain text version)

sta ondate offdate lat lon elev staname statype refsta dnorth deast
ALAM 1997293 30.986 -115.5665 2.396 El Alamito ss
BAR 1991001 32.68 -116.6717 -0.001
BAX 1991001 28.9397 -113.557 0
CBK 1991001 32.8995 -116.2517 0.414
CBX 1991001 32.3132 -116.6637 1.25
CCX 1991001 31.8682 -116.664 -0
CHX 1991001 31.472 -115.0513 0.04
COA 1991001 32.8633 -115.1233 0.034
COK 1991001 1998060 32.8495 -115.7278 -0.015
COK 1998060 32.8492 -115.7268 -0.015
CPE 1991001 32.88 -117.1 -0.001
CPX 1991001 32.4178 -115.304 0.18
CRR 1991001 32.8868 -115.9692 -0
EAC 1991001 31.8678 -116.6635 -0
ECX 1991001 31.657 -116.5978 1.04
ELAR 1997298 31.0789 -115.0916 0.54 El Arroyo ss
EMS 1991001 32.7413 -114.9878 0.047
EMX 1991001 31.9882 -115.2417 0.01
ENX 1991001 31.8835 -116.6627 0.23
ERP 1991001 32.7432 -115.6635 -0.009
ESR 1991001 32.179 -114.9273 -0
HGM 1991001 32.6438 -115.4713 -0
IKP 1991001 1998060 32.6488 -116.108 0.957
IKP 1998060 32.6502 -116.1095 0.957
IWZ 1991001 33.4653 -118.5513 0.122
JUL 1991001 33.0483 -116.6128 1.292
LACB 1997296 30.9628 -115.7968 0.672 Las Cabras ss
LCX 1991001 31.8688 -116.6638 -0
LIB 1991001 29.91 -112.67 0
LMX 1991001 32.1088 -114.9627 0.025
LOQI 1997290 30.9517 -115.903 0.206 Los Quintos ss
OBTO 1997293 31.0453 -115.4642 2.774 Observatorio ss
OLY 1991001 33.4313 -117.1175 0.482
PBX 1991001 31.742 -116.7255 0.33
PGX 1991001 31.9583 -116.4427 -0
PLT 1991001 32.7312 -114.7293 0.061
PPX 1991001 31.3355 -113.633 0.015
PUPE 1997301 31.3353 -113.6325 0.096 Puerto Penasco ss
RDX 1991001 31.9455 -115.9432 1.708
ROKO 1997302 1998016 31.1057 -114.463 0.01 Roca Konsac ss
SACA 1997299 31.0757 -115.2794 0.37 Santa Clara ss
SAFE 1997297 30.8817 -114.7525 0.091 San Felipe ss
SAJO 1997293 30.9574 -115.6864 1.039 San Jose ss
SCI 1991001 32.98 -118.5467 0.219
SFX 1991001 30.8812 -114.7522 0.055
SGL 1991001 32.6493 -115.7263 0.11
SPX 1991001 31.0452 -115.4637 2.835
SSN 1991001 33.2447 -119.5063 0.259
TELM 1997289 30.9826 -116.1342 0.14 San Telmo ss
VST 1991001 33.1567 -117.2317 0.112
YMD 1991001 32.5547 -114.5447 0.076
YUH 1991001 1999060 32.6477 -115.923 0.186
YUH 1999060 32.6473 -115.9225 0.186

Total: 53

Channel List

(plain text version)

sta chan ondate chanid offdate ctype edepth hang vang descrip
ALAM BHE 1997293 31 n -0 90 90
ALAM BHN 1997293 32 n -0 0 90
ALAM BHZ 1997293 33 n -0 0 0
ELAR BHE 1997298 34 n -0 90 90
ELAR BHN 1997298 35 n -0 0 90
ELAR BHZ 1997298 36 n -0 0 0
LACB BHE 1997296 37 n -0 90 90
LACB BHN 1997296 38 n -0 0 90
LACB BHZ 1997296 39 n -0 0 0
LOQI BHE 1997290 40 n -0 90 90
LOQI BHN 1997290 41 n -0 0 90
LOQI BHZ 1997290 42 n -0 0 0
OBTO BHE 1997293 43 n -0 90 90
OBTO BHN 1997293 44 n -0 0 90
OBTO BHZ 1997293 45 n -0 0 0
PUPE BHE 1997301 46 n -0 90 90
PUPE BHN 1997301 47 n -0 0 90
PUPE BHZ 1997301 48 n -0 0 0
ROKO BHE 1997302 49 1998016 n -0 90 90
ROKO BHN 1997302 50 1998016 n -0 0 90
ROKO BHZ 1997302 51 1998016 n -0 0 0
SACA BHE 1997299 52 n -0 90 90
SACA BHN 1997299 53 n -0 0 90
SACA BHZ 1997299 54 n -0 0 0
SAFE BHE 1997297 55 n -0 90 90
SAFE BHN 1997297 56 n -0 0 90
SAFE BHZ 1997297 57 n -0 0 0
SAJO BHE 1997293 58 n -0 90 90
SAJO BHN 1997293 59 n -0 0 90
SAJO BHZ 1997293 60 n -0 0 0
TELM BHE 1997289 61 n -0 90 90
TELM BHN 1997289 62 n -0 0 90
TELM BHZ 1997289 63 n -0 0 0

Total: 33

Selected References

URL: http://eqinfo.ucsd.edu/deployments/north_baja_transect.php [Last updated: 2015-10-22 (295) 23:07:43 UTC]