The LA ISTRA network

The LA RISTRA array consists of 57-stations, 958-km long from Lake Powell to Pecos, TX. The station spacing is 18.1 ± 3.6 km .

RISTRA tectonic Setting includes the southern Great Plains, the Rio Grande Rift, and the Colorado Plateau Provinces. RISTRA is approximately along the gradient of continental basement accretion ages.

The LA RISTRA array has deployed from November, 1999 -to May, 2001.

 
         
             
    RISTRA Ongoing Data Analysis
             
    The RISTRA data analysis has been concentrated in six areas: Site/noise conditions( J. Leon, MS, 2001; Wilson et al., 2003) geological/geophysical-based crustal velocity estimation ( basin characterization), mantle shear wave anisotropy analysis (Gok et al., 2003), surface wave analysis (West et al.), teleseismic tomography (Gao et al.), and receiver function imaging of crust and mantle (Wilson et al.).
                   
       

 

Mantle shear wave anisotropy analysis

        
                   
             
           

   
   

Surface wave analysis Crustal-scale surface wave model

        
               
               
           
Surface wave analysis Upper mantle surface wave model        
           
               
           
Teleseismic tomography      
           
               
               
Receiver function image of crustal features        
               
                   
                   
    Receiver function image of crustal features      
                   
                   
                   
    Receiver function image of upper mantle discontinuities      
                   
                       
      Computer simulation of the evalution of the Rio Grande Rift      
                       
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