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This text describes the data presented in the paper: Site Amplification in the Kathmandu Valley during the 2015 M7.6 Gorkha, Nepal Earthquake

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Introductory information
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Files included in the data deposit: 

1)Microtremor recordings from the grounds of the Annapurna Hotel: A traverse of 6 recordings. Layout diagram included.
2)Three single station microtremor recordings from the regions of Bhaktapur and Bungmati
3)Microtremor recordings from the Siddhitol Region: Three traverses. Two perpendicularly crossed at Balaju park and a third from the nearby river bank.


All datasets were recorded by a Tromino instrument during an EEFIT mission to Nepal after the 2015 M7.6 Gorkha Earthquake



Key words: microtremor; site amplification; 2015 Nepal earthquake; post earthquake assessment; HVSR; Kathmandu Valley;



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Methodological information
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Recordings from a Tromino Microtremor instrument (combined accelerometer and velocimeter). Collected by the EEFIT team Nepal mission in order to determine
shear wave velocities, site frequencies and so to determine likely site amplification from around the Kathmandu valley. It is processed using Grilla Software,
created by Micromed (now Moho) and the University of Bologna. This uses Nakamura's HVSR method (1989).



Instruments, hardware and software used: 
Tromino Instrument with associated Grilla Software


Date(s) of data collection: 
15/06/2015-19/06/2016


Geographic coverage of data:
Kathmandu Valley, Nepal

1)Annapurna Hotel Garden (27.711100°N, 85.315698°E)
2)Bhaktapur (27.67172202°N, 85.42809284°E) Bungmati (27.62930389°N, 85.30364019°E)
3)Balaju Park (27.733902°N, 85.301356°E) Bishnumati River Bank (27°44'01.3"N 85°18'24.3"E)

Data validation (how was the data checked, proofed and cleaned):
The data was collected according to the SESAME H/V guidelines (2004). The recording is converted to the frequency domain with a Fast Fourier Transform, showing
the three components smoothed by 10% through triangular windowing of 20s. Windows were removed to “clean” transient noise within the trace, ensuring a minimum
of 70% of the trace remained, but more generally 80-90% was kept. Using the H/V method of Nakamura (1989), the two horizontal component spectra are geometrically
averaged and divided by the vertical component forming an H/V plot. This is constrained to for Vs30 estimates by previous microtremor Vs measurements carried
out by Paudyal et al (2012) and the Wald & Allen (2007) topographical proxy method implemented in the Kathmandu Valley by Goda et al (2015). See paper for 
futher





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Data-specific information
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Definitions of names, labels, acronyms or specialist terminology uses for variables, records and their values: 
AP:Annapurna Hotel
G#: Partition data was save in the original instrument (important for initally importing the data)
KTM: Single station Measurment taken in Kathmandu Valley
KTP: Balaju Park
KTRB: Bishnumati River Bank next to Balaju Park


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Contact
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Please contact rdm@ncl.ac.uk for further information