Collaborative research with GEO-HAZ Consulting, Inc., and U.S. Geological Survey: interaction of volcanic and tectonic processes in the past 40,000 years near Long Valley Caldera

1998 ◽  
Keyword(s):  
Collaborative Research ◽  
Geological Survey ◽  
Long Valley Caldera ◽  
The Past ◽  
Tectonic Processes ◽  
Long Valley

scholarly journals Long Valley Caldera 2003 through 2014: Overview of low level unrest in the past decade

2014 ◽  
Author(s):  
Stuart K. Wilkinson ◽  
David P. Hill ◽  
John O. Langbein ◽  
Michael Lisowski ◽  
Margaret T. Mangan
Keyword(s):  
Long Valley Caldera ◽  
Low Level ◽  
The Past ◽  
Long Valley

The 2011-2020 long-term sustained inflation at Long Valley Caldera:  investigation of the interaction of magmatic and tectonic processes

2021 ◽  
Author(s):  
Erica De Paolo ◽  
Elisa Trasatti ◽  
Cristiano Tolomei ◽  
Emily K. Montgomery-Brown
Keyword(s):  
Ground Deformation ◽  
Deformation Source ◽  
Deformation Pattern ◽  
Seismic Zone ◽  
The South ◽  
Long Valley Caldera ◽  
Tectonic Processes ◽  
Sustained Inflation ◽  
Long Valley

<p>The Long Valley Caldera, California (USA), has been restless over the past few decades, experiencing seismic swarms and ground deformation episodes. The last inflation began in late 2011, when a radially symmetric tumescence was detected coinciding with a large resurgent dome within the caldera. Since then, a continuous inflation with quasi-steady rate of ~1.5 cm/yr has been observed.<span>  </span>Earthquakes mostly occur within the caldera along the South Moat Seismic Zone, to the south of the maximum deformation area. Although the area is tectonically active, increased seismic activity has been documented during periods of renewed inflation since the onset of this tumescence in 1978. In this study, we aim to investigate the nature and dynamics of the long-term unrest at Long Valley Caldera, as well as to provide new insights into the interaction between magmatic and tectonic processes. For this purpose, we consider a variety of datasets including geodetic and seismic records over the period spanning from late 2011 to the end of 2020. A complete seismic catalog supports our study, with more than 200 M2.5-4.5 earthquakes recorded since 2011, most with epicenters located within the caldera. Measurements from a dense network of continuous GPS stations collected in the last 10 years are analyzed in combination with high resolution Interferometric Synthetic Aperture Radar (InSAR) data. For full temporal coverage, we integrate InSAR velocities obtained from the acquisition of different satellite missions. We use, in particular, data from SAR systems operating with X and C-bands such as TerraSAR-X, COSMO-SkyMed and Sentinel-1. The multi-sensor dataset (i.e., GPS and multi-mission InSAR data) compensate the limitations of each technique, with reliable mapping of the deformation pattern evolving over several years. Data analysis highlights uplift velocities with peaks of ~2 cm/yr within the caldera and beyond its southern rim. Moreover, compared to the first half of the period of analysis (2011-2014), the area affected by high deformation rates is broader in the last several years (2017-2020). Models based on the geodetic data are developed to constrain the deformation source and to better interpret the observed signals. This study is motivated as a contribution to the understanding of this long-lived caldera unrest, for a more reliable hazard assessment.</p>

Bibliography of literature pertaining to Long Valley Caldera and associated volcanic fields

2005 ◽  
Author(s):  
John W. Ewert ◽  
Christopher J. Harpel ◽  
Suzanna K. Brooks
Keyword(s):  
Long Valley Caldera ◽  
Long Valley ◽  
Volcanic Fields

NEW AIRBORNE LIDAR IMAGERY OF THE INYO DOMES AND INYO CRATERS, LONG VALLEY CALDERA, CALIFORNIA

2017 ◽  
Author(s):  
Graham D.M. Andrews ◽  
◽  
Abigail E. Martens ◽  
William Krugh ◽  
Sarah R. Brown
Keyword(s):  
Airborne Lidar ◽  
Long Valley Caldera ◽  
Long Valley

Multi-hazard perceptions at Long Valley Caldera, California, USA

2020 ◽  
pp. 101955
Author(s):  
Justin B. Peers ◽  
Michael K. Lindell ◽  
Christopher E. Gregg ◽  
Ashleigh K. Reeves ◽  
Andrew T. Joyner ◽  
...  
Keyword(s):  
Long Valley Caldera ◽  
Long Valley

Effects of geothermal development on deformation in the Long Valley Caldera, eastern California, 1985-1994

1995 ◽  
Vol 100 (B7) ◽  
pp. 12475-12486 ◽  
Author(s):  
M. L. Sorey ◽  
C. D. Farrar ◽  
G. A. Marshall ◽  
J. F. Howie
Keyword(s):  
Long Valley Caldera ◽  
Long Valley

Helium isotope and gas discharge variations associated with crustal unrest in Long Valley Caldera, California, 1989–1992

1993 ◽  
Vol 98 (B9) ◽  
pp. 15871 ◽  
Author(s):  
M. L. Sorey ◽  
B. M. Kennedy ◽  
W. C. Evans ◽  
C. D. Farrar ◽  
G. A. Suemnicht
Keyword(s):  
Gas Discharge ◽  
Helium Isotope ◽  
Long Valley Caldera ◽  
Long Valley
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