Strong-Motion Observations of the M 7.8 Gorkha, Nepal, Earthquake Sequence and Development of the N-SHAKE Strong-Motion Network
We present and describe strong-motion data observations from the 2015 M 7.8 Gorkha, Nepal, earthquake sequence collected using existing and new Quake-Catcher Network (QCN) and U.S. Geological Survey NetQuakes sensors located in the Kathmandu Valley. A comparison of QCN data with waveforms recorded b...
| Main Authors: | , , , , , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2015
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/104423 http://hdl.handle.net/10220/38850 |
| _version_ | 1811676870282838016 |
|---|---|
| author | Dixit, Amod Mani Ringler, Adam T. Sumy, Danielle F. Cochran, Elizabeth S. Hough, Susan E. Martin, Stacey Servito Gibbons, Steven Luetgert, James H. Galetzka, John Shrestha, Surya Narayan Rajaure, Sudhir McNamara, Daniel E. |
| author2 | Earth Observatory of Singapore |
| author_facet | Earth Observatory of Singapore Dixit, Amod Mani Ringler, Adam T. Sumy, Danielle F. Cochran, Elizabeth S. Hough, Susan E. Martin, Stacey Servito Gibbons, Steven Luetgert, James H. Galetzka, John Shrestha, Surya Narayan Rajaure, Sudhir McNamara, Daniel E. |
| author_sort | Dixit, Amod Mani |
| collection | NTU |
| description | We present and describe strong-motion data observations from the 2015 M 7.8 Gorkha, Nepal, earthquake sequence collected using existing and new Quake-Catcher Network (QCN) and U.S. Geological Survey NetQuakes sensors located in the Kathmandu Valley. A comparison of QCN data with waveforms recorded by a conventional strong-motion (NetQuakes) instrument validates the QCN data. We present preliminary analysis of spectral accelerations, and peak ground acceleration and velocity for earthquakes up to M 7.3 from the QCN stations, as well as preliminary analysis of the mainshock recording from the NetQuakes station. We show that mainshock peak accelerations were lower than expected and conclude the Kathmandu Valley experienced a pervasively nonlinear response during the mainshock. Phase picks from the QCN and NetQuakes data are also used to improve aftershock locations. This study confirms the utility of QCN instruments to contribute to ground-motion investigations and aftershock response in regions where conventional instrumentation and open-access seismic data are limited. Initial pilot installations of QCN instruments in 2014 are now being expanded to create the Nepal–Shaking Hazard Assessment for Kathmandu and its Environment (N-SHAKE) network. |
| first_indexed | 2024-10-01T02:28:20Z |
| format | Journal Article |
| id | ntu-10356/104423 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:28:20Z |
| publishDate | 2015 |
| record_format | dspace |
| spelling | ntu-10356/1044232020-09-26T21:24:44Z Strong-Motion Observations of the M 7.8 Gorkha, Nepal, Earthquake Sequence and Development of the N-SHAKE Strong-Motion Network Dixit, Amod Mani Ringler, Adam T. Sumy, Danielle F. Cochran, Elizabeth S. Hough, Susan E. Martin, Stacey Servito Gibbons, Steven Luetgert, James H. Galetzka, John Shrestha, Surya Narayan Rajaure, Sudhir McNamara, Daniel E. Earth Observatory of Singapore Strong motion Gorkha earthquake N-SHAKE Nepal earthquake QCN NetQuakes We present and describe strong-motion data observations from the 2015 M 7.8 Gorkha, Nepal, earthquake sequence collected using existing and new Quake-Catcher Network (QCN) and U.S. Geological Survey NetQuakes sensors located in the Kathmandu Valley. A comparison of QCN data with waveforms recorded by a conventional strong-motion (NetQuakes) instrument validates the QCN data. We present preliminary analysis of spectral accelerations, and peak ground acceleration and velocity for earthquakes up to M 7.3 from the QCN stations, as well as preliminary analysis of the mainshock recording from the NetQuakes station. We show that mainshock peak accelerations were lower than expected and conclude the Kathmandu Valley experienced a pervasively nonlinear response during the mainshock. Phase picks from the QCN and NetQuakes data are also used to improve aftershock locations. This study confirms the utility of QCN instruments to contribute to ground-motion investigations and aftershock response in regions where conventional instrumentation and open-access seismic data are limited. Initial pilot installations of QCN instruments in 2014 are now being expanded to create the Nepal–Shaking Hazard Assessment for Kathmandu and its Environment (N-SHAKE) network. Published version 2015-11-13T08:02:10Z 2019-12-06T21:32:26Z 2015-11-13T08:02:10Z 2019-12-06T21:32:26Z 2015 Journal Article Dixit, A. M., Ringler, A. T., Sumy, D. F., Cochran, E. S., Hough, S. E., Martin, S. S., et al. (2015). Strong-Motion Observations of the M 7.8 Gorkha, Nepal, Earthquake Sequence and Development of the N-SHAKE Strong-Motion Network. Seismological Research Letters, 86(6), 1533-1539. https://hdl.handle.net/10356/104423 http://hdl.handle.net/10220/38850 10.1785/0220150146 en Seismological Research Letters © 2015 Seismological Society of America (SSA). This paper was published in Seismological Research Letters and is made available as an electronic reprint (preprint) with permission of Seismological Society of America (SSA). The published version is available at: [http://dx.doi.org/10.1785/0220150146]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. application/pdf |
| spellingShingle | Strong motion Gorkha earthquake N-SHAKE Nepal earthquake QCN NetQuakes Dixit, Amod Mani Ringler, Adam T. Sumy, Danielle F. Cochran, Elizabeth S. Hough, Susan E. Martin, Stacey Servito Gibbons, Steven Luetgert, James H. Galetzka, John Shrestha, Surya Narayan Rajaure, Sudhir McNamara, Daniel E. Strong-Motion Observations of the M 7.8 Gorkha, Nepal, Earthquake Sequence and Development of the N-SHAKE Strong-Motion Network |
| title | Strong-Motion Observations of the M 7.8 Gorkha, Nepal, Earthquake Sequence and Development of the N-SHAKE Strong-Motion Network |
| title_full | Strong-Motion Observations of the M 7.8 Gorkha, Nepal, Earthquake Sequence and Development of the N-SHAKE Strong-Motion Network |
| title_fullStr | Strong-Motion Observations of the M 7.8 Gorkha, Nepal, Earthquake Sequence and Development of the N-SHAKE Strong-Motion Network |
| title_full_unstemmed | Strong-Motion Observations of the M 7.8 Gorkha, Nepal, Earthquake Sequence and Development of the N-SHAKE Strong-Motion Network |
| title_short | Strong-Motion Observations of the M 7.8 Gorkha, Nepal, Earthquake Sequence and Development of the N-SHAKE Strong-Motion Network |
| title_sort | strong motion observations of the m 7 8 gorkha nepal earthquake sequence and development of the n shake strong motion network |
| topic | Strong motion Gorkha earthquake N-SHAKE Nepal earthquake QCN NetQuakes |
| url | https://hdl.handle.net/10356/104423 http://hdl.handle.net/10220/38850 |
| work_keys_str_mv | AT dixitamodmani strongmotionobservationsofthem78gorkhanepalearthquakesequenceanddevelopmentofthenshakestrongmotionnetwork AT ringleradamt strongmotionobservationsofthem78gorkhanepalearthquakesequenceanddevelopmentofthenshakestrongmotionnetwork AT sumydaniellef strongmotionobservationsofthem78gorkhanepalearthquakesequenceanddevelopmentofthenshakestrongmotionnetwork AT cochranelizabeths strongmotionobservationsofthem78gorkhanepalearthquakesequenceanddevelopmentofthenshakestrongmotionnetwork AT houghsusane strongmotionobservationsofthem78gorkhanepalearthquakesequenceanddevelopmentofthenshakestrongmotionnetwork AT martinstaceyservito strongmotionobservationsofthem78gorkhanepalearthquakesequenceanddevelopmentofthenshakestrongmotionnetwork AT gibbonssteven strongmotionobservationsofthem78gorkhanepalearthquakesequenceanddevelopmentofthenshakestrongmotionnetwork AT luetgertjamesh strongmotionobservationsofthem78gorkhanepalearthquakesequenceanddevelopmentofthenshakestrongmotionnetwork AT galetzkajohn strongmotionobservationsofthem78gorkhanepalearthquakesequenceanddevelopmentofthenshakestrongmotionnetwork AT shresthasuryanarayan strongmotionobservationsofthem78gorkhanepalearthquakesequenceanddevelopmentofthenshakestrongmotionnetwork AT rajauresudhir strongmotionobservationsofthem78gorkhanepalearthquakesequenceanddevelopmentofthenshakestrongmotionnetwork AT mcnamaradaniele strongmotionobservationsofthem78gorkhanepalearthquakesequenceanddevelopmentofthenshakestrongmotionnetwork |