- Ground-motion model is:
where PGA in in gal, a

_{1}= -5.8, a_{2}= 2.62, a_{3}= -0.16, a_{4}= -1.33 and σ = 0.42. - Data from 8 stations in Pithoragarh region of Kumaon Himalaya (Uttarakhand,India) from 03/2006 to
03/2008. Stations cover area of 11812km
^{2}(minimum inter-station distance is 11km). Instrument trigger level is 0.1gal so that almost continuous recording so as to record even smallest earthquakes. Sampling frequency is 100Hz. Records baseline-corrected, corrected for instrument response and filtered. - Locate earthquakes using HYPO71 for events recorded at ≥ 3 stations and S-P intervals for other events.
- Compute M
_{w}from S-phase source spectrum at each station after correcting for geometrical and anelastic attenuation. - Most data have 10 ≤ r
_{hypo}≤ 100km. - Also derive model using anelastic attenuation term and geometrical decay term in terms of r
_{hypo}but find higher σ. - Test fit and normality of model to data by plotting: observed v. predicted, cumulative probability plot and residuals w.r.t. PGA. Find good performance but note some weak tails.