Robert Kayen (Former Employee)
Science and Products
Filter Total Items: 27
A comparative study of surface waves inversion techniques at strong motion recording sites in Greece
Surface wave method was used for the estimation of Vs vs depth profile at 10 strong motion stations in Greece. The dispersion data were obtained by SASW method, utilizing a pair of electromechanical harmonic-wave source (shakers) or a random source (drop weight). In this study, three inversion techniques were used a) a recently proposed Simplified Inversion Method (SIM), b) an inversion technique
Authors
Panagiotis C. Pelekis, Alexandros Savvaidis, Robert E. Kayen, Vasileios S. Vlachakis, George A. Athanasopoulos
Shear Wave Velocity and Site Amplification Factors for 25 Strong-Motion Instrument Stations Affected by the M5.8 Mineral, Virginia, Earthquake of August 23, 2011
Vertical one-dimensional shear wave velocity (Vs) profiles are presented for 25 strong-motion instrument sites along the Mid-Atlantic eastern seaboard, Piedmont region, and Appalachian region, which surround the epicenter of the M5.8 Mineral, Virginia, Earthquake of August 23, 2011. Testing was performed at sites in Pennsylvania, Maryland, West Virginia, Virginia, the District of Columbia, North C
Authors
Robert E. Kayen, Brad A. Carkin, Skye C. Corbett, Aliza Zangwill, Ivan Estevez, Lena Lai
Spatial distribution of landslides triggered from the 2007 Niigata Chuetsu–Oki Japan Earthquake
Understanding the spatial distribution of earthquake-induced landslides from specific earthquakes provides an opportunity to recognize what to expect from future events. The July 16, 2007 Mw 6.6 (MJMA 6.8) Niigata Chuetsu–Oki Japan earthquake triggered hundreds of landslides in the area surrounding the coastal city of Kashiwazaki and provides one such opportunity to evaluate the impacts of an offs
Authors
Brian D. Collins, Robert E. Kayen, Yasuo Tanaka
Volcano collapse promoted by progressive strength reduction: New data from Mount St. Helens
Rock shear strength plays a fundamental role in volcano flank collapse, yet pertinent data from modern collapse surfaces are rare. Using samples collected from the inferred failure surface of the massive 1980 collapse of Mount St. Helens (MSH), we determined rock shear strength via laboratory tests designed to mimic conditions in the pre-collapse edifice. We observed that the 1980 failure shear su
Authors
Mark E. Reid, Terry E.C. Keith, Robert E. Kayen, Neal R. Iverson, Richard M. Iverson, Dianne Brien
Historic and paleo-submarine landslide deposits imaged beneath Port Valdez, Alaska: Implications for tsunami generation in a glacial fiord
During the 1964 M9.2 great Alaskan earthquake, submarine-slope failures resulted in the generation of highly destructive tsunamis at Port Valdez, Alaska. A high-resolution, mini-sparker reflection profiler was used to image debris lobes, which we attribute to slope failures that occurred both during and prior to the 1964 megathrust event. In these reflection profiles, debris lobe deposits are indi
Authors
H. F. Ryan, H. J. Lee, Peter J. Haeussler, C. R. Alexander, Robert E. Kayen
Site characterization of Italian strong motion recording stations
A dataset of site conditions at 101 Italian ground motion stations with recorded motions has been compiled that includes geologic characteristics and seismic velocities. Geologic characterization is derived principally from local geologic investigations by ENEL that include detailed mapping and cross sections. For sites lacking such detailed geologic characterization, the geology maps of the by Se
Authors
Giuseppe Scasserra, Jonathan P. Stewart, Robert E. Kayen, Giuseppe Lanzo
Assessment of ground deformation due to soil liquefaction in the San Jose, California area by using geotechnical IT
No abstract available.
Authors
Robert E. Kayen, Keith L. Knudsen, Satoshi Nagata, Yasuo Tanaka
Remote sensing observations of landslides and ground deformation from the 2004 Niigata Ken Chuetsu earthquake
In recent years, major developments in remote sensing have made it possible to use these technologies to document the effects of earthquakes. Specifically, high-resolution satellite imagery and three-dimensional laser scanning (LIDAR) can provide important observations of earthquake damage that supplement traditional observations from field reconnaissance. The 2004 Niigata Ken Chuetsu earthquake p
Authors
Ellen M. Rathje, Robert E. Kayen, Kyu-Seok Woo
Closure to “Standard penetration test-based probabilistic and deterministic assessment of seismic soil liquefaction potential” by K. Onder Cetin, Raymond B. Seed, Armen Der Kiureghian, Kohji Tokimatsu, Leslie F. Harder Jr., Robert E. Kayen, and Robert E.
No abstract available.
Authors
K. Onder Cetin, Raymond B. Seed, Armen Der Kiureghian, Kohji Tokimatsu, Leslie F. Harder, Robert E. Kayen, Robb E. S. Moss
LIDAR & SASW technologies for geotechnical earthquake engineering
Geotechnical engineering methods are validated through comparison of field‐data of surface deformations and sub‐surface state properties. Recent advances in non‐invasive surface imaging and sub‐surface stiffness characterization allow us to rapidly and inexpensively map these spatial and physical properties in two and three dimensions. In this paper, we discuss new technologies used at the United
Authors
Robert Kayen, Brian D. Collins
Radar structure of earthquake-induced, coastal landslides in Anchorage, Alaska
Ground-penetrating radar (GPR) was used to investigate the internal structure of two large landslides in Anchorage, Alaska that resulted from the great 1964 earthquake. The Government Hill and Turnagain Heights landslides occurred in similar stratigraphic and geographic settings, yet the style of ground deformation is different at each site. GPR data are compared with previous investigations and a
Authors
Walter Barnhardt, Robert E. Kayen
The Loma Prieta, California, earthquake of October 17, 1989: Liquefaction
The 1989 Loma Prieta earthquake both reconfirmed the vulnerability of areas in the San Francisco-Monterey Bay region to liquefaction and provided an opportunity to test methodologies for predicting liquefaction that have been developed since the mid-1970's. This vulnerability is documented in the chapter edited by O'Rourke and by the investigators in this chapter who describe case histories of liq
Authors
Thomas L. Holzer, Jean Lou A. Chameau, G. Wayne Clough, J.D. Frost, Fernando A. M. Reyna, Robert E. Kayen, James K. Mitchell, Raymond B. Seed, Shin'ya Nishio, Maurice S. Power, John A. Egan, Scott E. Shewbridge, John deBecker, J. Richard Faris, Michael J. Bennett, Lelio H. Mejia, John D. Sims, C. D. Garvin, Roman D. Hryciw, Alan L. Kropp, Matthew Homolka, Wayne A. Charlie, Donald O. Doehring, Jeffrey P. Brislawn, Hassen Hassen, Kyle Rollins, Michael D. Mchood, Frederick J. Wentz, William R. Dupre, John C. Tinsley
Science and Products
Filter Total Items: 27
A comparative study of surface waves inversion techniques at strong motion recording sites in Greece
Surface wave method was used for the estimation of Vs vs depth profile at 10 strong motion stations in Greece. The dispersion data were obtained by SASW method, utilizing a pair of electromechanical harmonic-wave source (shakers) or a random source (drop weight). In this study, three inversion techniques were used a) a recently proposed Simplified Inversion Method (SIM), b) an inversion technique
Authors
Panagiotis C. Pelekis, Alexandros Savvaidis, Robert E. Kayen, Vasileios S. Vlachakis, George A. Athanasopoulos
Shear Wave Velocity and Site Amplification Factors for 25 Strong-Motion Instrument Stations Affected by the M5.8 Mineral, Virginia, Earthquake of August 23, 2011
Vertical one-dimensional shear wave velocity (Vs) profiles are presented for 25 strong-motion instrument sites along the Mid-Atlantic eastern seaboard, Piedmont region, and Appalachian region, which surround the epicenter of the M5.8 Mineral, Virginia, Earthquake of August 23, 2011. Testing was performed at sites in Pennsylvania, Maryland, West Virginia, Virginia, the District of Columbia, North C
Authors
Robert E. Kayen, Brad A. Carkin, Skye C. Corbett, Aliza Zangwill, Ivan Estevez, Lena Lai
Spatial distribution of landslides triggered from the 2007 Niigata Chuetsu–Oki Japan Earthquake
Understanding the spatial distribution of earthquake-induced landslides from specific earthquakes provides an opportunity to recognize what to expect from future events. The July 16, 2007 Mw 6.6 (MJMA 6.8) Niigata Chuetsu–Oki Japan earthquake triggered hundreds of landslides in the area surrounding the coastal city of Kashiwazaki and provides one such opportunity to evaluate the impacts of an offs
Authors
Brian D. Collins, Robert E. Kayen, Yasuo Tanaka
Volcano collapse promoted by progressive strength reduction: New data from Mount St. Helens
Rock shear strength plays a fundamental role in volcano flank collapse, yet pertinent data from modern collapse surfaces are rare. Using samples collected from the inferred failure surface of the massive 1980 collapse of Mount St. Helens (MSH), we determined rock shear strength via laboratory tests designed to mimic conditions in the pre-collapse edifice. We observed that the 1980 failure shear su
Authors
Mark E. Reid, Terry E.C. Keith, Robert E. Kayen, Neal R. Iverson, Richard M. Iverson, Dianne Brien
Historic and paleo-submarine landslide deposits imaged beneath Port Valdez, Alaska: Implications for tsunami generation in a glacial fiord
During the 1964 M9.2 great Alaskan earthquake, submarine-slope failures resulted in the generation of highly destructive tsunamis at Port Valdez, Alaska. A high-resolution, mini-sparker reflection profiler was used to image debris lobes, which we attribute to slope failures that occurred both during and prior to the 1964 megathrust event. In these reflection profiles, debris lobe deposits are indi
Authors
H. F. Ryan, H. J. Lee, Peter J. Haeussler, C. R. Alexander, Robert E. Kayen
Site characterization of Italian strong motion recording stations
A dataset of site conditions at 101 Italian ground motion stations with recorded motions has been compiled that includes geologic characteristics and seismic velocities. Geologic characterization is derived principally from local geologic investigations by ENEL that include detailed mapping and cross sections. For sites lacking such detailed geologic characterization, the geology maps of the by Se
Authors
Giuseppe Scasserra, Jonathan P. Stewart, Robert E. Kayen, Giuseppe Lanzo
Assessment of ground deformation due to soil liquefaction in the San Jose, California area by using geotechnical IT
No abstract available.
Authors
Robert E. Kayen, Keith L. Knudsen, Satoshi Nagata, Yasuo Tanaka
Remote sensing observations of landslides and ground deformation from the 2004 Niigata Ken Chuetsu earthquake
In recent years, major developments in remote sensing have made it possible to use these technologies to document the effects of earthquakes. Specifically, high-resolution satellite imagery and three-dimensional laser scanning (LIDAR) can provide important observations of earthquake damage that supplement traditional observations from field reconnaissance. The 2004 Niigata Ken Chuetsu earthquake p
Authors
Ellen M. Rathje, Robert E. Kayen, Kyu-Seok Woo
Closure to “Standard penetration test-based probabilistic and deterministic assessment of seismic soil liquefaction potential” by K. Onder Cetin, Raymond B. Seed, Armen Der Kiureghian, Kohji Tokimatsu, Leslie F. Harder Jr., Robert E. Kayen, and Robert E.
No abstract available.
Authors
K. Onder Cetin, Raymond B. Seed, Armen Der Kiureghian, Kohji Tokimatsu, Leslie F. Harder, Robert E. Kayen, Robb E. S. Moss
LIDAR & SASW technologies for geotechnical earthquake engineering
Geotechnical engineering methods are validated through comparison of field‐data of surface deformations and sub‐surface state properties. Recent advances in non‐invasive surface imaging and sub‐surface stiffness characterization allow us to rapidly and inexpensively map these spatial and physical properties in two and three dimensions. In this paper, we discuss new technologies used at the United
Authors
Robert Kayen, Brian D. Collins
Radar structure of earthquake-induced, coastal landslides in Anchorage, Alaska
Ground-penetrating radar (GPR) was used to investigate the internal structure of two large landslides in Anchorage, Alaska that resulted from the great 1964 earthquake. The Government Hill and Turnagain Heights landslides occurred in similar stratigraphic and geographic settings, yet the style of ground deformation is different at each site. GPR data are compared with previous investigations and a
Authors
Walter Barnhardt, Robert E. Kayen
The Loma Prieta, California, earthquake of October 17, 1989: Liquefaction
The 1989 Loma Prieta earthquake both reconfirmed the vulnerability of areas in the San Francisco-Monterey Bay region to liquefaction and provided an opportunity to test methodologies for predicting liquefaction that have been developed since the mid-1970's. This vulnerability is documented in the chapter edited by O'Rourke and by the investigators in this chapter who describe case histories of liq
Authors
Thomas L. Holzer, Jean Lou A. Chameau, G. Wayne Clough, J.D. Frost, Fernando A. M. Reyna, Robert E. Kayen, James K. Mitchell, Raymond B. Seed, Shin'ya Nishio, Maurice S. Power, John A. Egan, Scott E. Shewbridge, John deBecker, J. Richard Faris, Michael J. Bennett, Lelio H. Mejia, John D. Sims, C. D. Garvin, Roman D. Hryciw, Alan L. Kropp, Matthew Homolka, Wayne A. Charlie, Donald O. Doehring, Jeffrey P. Brislawn, Hassen Hassen, Kyle Rollins, Michael D. Mchood, Frederick J. Wentz, William R. Dupre, John C. Tinsley