The three-dimensional structure beneath the Popocatépetl volcano (Mexico) based on local earthquake seismic tomography

Kuznetsov, Pavel; Koulakov, Ivan

doi:10.1016/j.jvolgeores.2014.02.017

Cited by 27 publications

(23 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The area of volcanic edifices of the Volcán de Colima and Nevado de Colima at 5‐km depth appears to be associated with a high‐velocity anomaly with the diameter of ~8 km centered with Nevado del Colima. Such high‐velocity anomalies associated with volcano summits are fairly typical features observed in many different volcanoes, such as Popocatepetl (Kuznetsov & Koulakov, ) and Redoubt (Kasatkina et al, ). This might be related to the fact that the volcano is mostly composed of lava flows having more rigid integral properties than volcanoclastic deposits on the volcano's flanks.…”

Section: Discussionmentioning

confidence: 74%

“…Such high-velocity anomalies associated with volcano summits are fairly typical features observed in many different volcanoes, such as Popocatepetl (Kuznetsov & Koulakov, 2014) and Redoubt (Kasatkina et al, 2014). This might be related to the fact that the volcano is mostly composed of lava flows having more rigid integral properties than volcanoclastic deposits on the volcano's flanks.…”

Section: Journal Of Geophysical Research: Solid Earthmentioning

confidence: 71%

See 1 more Smart Citation

Fault‐Associated Magma Conduits Beneath Volcán de Colima Revealed by Seismic Velocity and Attenuation Tomography Studies

et al. 2019

View full text Add to dashboard Cite

We present the results of tomographic studies using seismic velocity and attenuation in the area of the Colima Volcanic complex (CVC). Our dataset comprises body waves from local earthquakes recorded by the temporary seismic stations of the CODEX network in the Colima area and a few stations of the regional Mapping the Rivera Subduction Zone (MARS) networks, both deployed in 2006–2008. We obtain three‐dimensional distributions of seismic velocities and attenuation in the crust beneath the CVC area. At shallow depths, we observe a large negative anomaly to the south of CVC, coinciding with the location of the Central Colima Graben. This anomaly may represent debris avalanche deposits, as well as shallow magma reservoirs feeding the eruptions of the presently active Volcán de Colima. In contrast, the volcano edifice of Nevado de Colima, which is built of rigid igneous rocks, is associated with high‐velocity and low‐attenuation anomalies at shallow depths. In the deeper section, a major anomaly with high Vp/Vs, low Vs, and high S wave attenuation corresponds to the location of the regional Tamazula fault. As this represents a mechanically weakened zone of the crust, it may form the pathway that feeds CVC. Both velocity and attenuation models show that the fault‐associated conduit brought magma from the mantle through the lower crust to a depth of 15 km. Then, a light fraction of magma may continue to ascend, forming shallow reservoirs beneath the southern flank of CVC.

show abstract

Section: Discussionmentioning

confidence: 74%

Section: Journal Of Geophysical Research: Solid Earthmentioning

confidence: 71%

Fault‐Associated Magma Conduits Beneath Volcán de Colima Revealed by Seismic Velocity and Attenuation Tomography Studies

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Previous passive‐ and active‐source velocity tomography studies of other volcanoes have found a variety of types of features in the subsurface. Compiling results from 23 active arc volcanoes (Aso [ Sudo and Kong , ], Augustine [ Syracuse et al ., ], Mount Etna [ Aloisi et al ., ; Laigle et al ., ], Mount Fuji [ Nakamichi et al ., ], Great Sitkin [ Pesicek et al ., ], Iwate [ Tanaka et al ., ], Katmai [ Murphy et al ., ], Kirishima [ Tomatsu et al ., ], Klyuchevskoy [ Koulakov et al ., ], Long Valley Caldera [ Seccia et al ., ], Montserrat [ Paulatto et al ., ], Mount St. Helens [ Lees , ; Waite and Moran , ], Naruko [ Nakajima and Hasegawa , ], Nevado del Ruiz [ Londoño and Sudo , ], Okmok [ Masterlark et al ., ; Ohlendorf et al ., ], Popocatépetl [ Berger et al ., ; Kuznetsov and Koulakov , ], Rainier [ Moran et al ., ], Redoubt [ DeShon et al ., ], Taranaki [ Sherburn et al ., ], Tongariro [ Rowlands et al ., ], Tungurahua [ Molina et al ., ], Unzen [ Ohmi and Lees , ], and Vesuvius [ Piana Agostinetti and Chiarabba , ]) show that upper crustal low‐velocity regions, potentially indicative of hotter or melt‐rich areas, are as common as high‐velocity regions, generally interpreted to be cooled basaltic rocks intruded during previous eruptions and near which magma travels to the surface. It is possible that all volcanoes contain both these features, but resolution limitations prevent their observation.…”

Section: Resultsmentioning

confidence: 99%

Seismicity and structure of Akutan and Makushin Volcanoes, Alaska, using joint body and surface wave tomography

et al. 2015

View full text Add to dashboard Cite

Joint inversions of seismic data recover models that simultaneously fit multiple constraints while playing upon the strengths of each data type. Here we jointly invert 14 years of local earthquake body wave arrival times from the Alaska Volcano Observatory catalog and Rayleigh wave dispersion curves based upon ambient noise measurements for local V p , V s , and hypocentral locations at Akutan and Makushin Volcanoes using a new joint inversion algorithm. The velocity structure and relocated seismicity of both volcanoes are significantly more complex than many other volcanoes studied using similar techniques. Seismicity is distributed among several areas beneath or beyond the flanks of both volcanoes, illuminating a variety of volcanic and tectonic features. The velocity structures of the two volcanoes are exemplified by the presence of narrow high-V p features in the near surface, indicating likely current or remnant pathways of magma to the surface. A single broad low-V p region beneath each volcano is slightly offset from each summit and centered at approximately 7 km depth, indicating a potential magma chamber, where magma is stored over longer time periods. Differing recovery capabilities of the V p and V s data sets indicate that the results of these types of joint inversions must be interpreted carefully.

show abstract

“…The P-to-S velocity ratio ðV p =V s Þ is a decisive parameter to discriminate magma from either fluids or gases if spatially correlated with high attenuation (Hansen et al 2004;Vanorio et al 2005;De Siena et al 2010;Kuznetsov and Koulakov 2014). Low V p =V s anomalies and high attenuation may in fact be associated with the presence of gas filling faults and fractures, hydrothermal basins, and CO 2 emission beneath volcanoes, mountain ranges, and geothermal reservoirs (Julian et al 1996(Julian et al , 1998Hunsen et al 2004;Hansen et al 2004).…”

Section: Introductionmentioning

confidence: 99%

The 3D Attenuation Structure of Deception Island (Antarctica)

et al. 2015

View full text Add to dashboard Cite

The seismic and volcanological structure of Deception Island (Antarctica) is an intense focus topic in Volcano Geophysics. The interpretations given by scientists on the origin, nature, and location of the structures buried under the island strongly diverge. We present a high-resolution 3D P-wave attenuation tomography model obtained by using the coda normalization method on 20,293 high-quality waveforms produced by active sources. The checkerboard and synthetic anomaly tests guarantee the reproduction of the input anomalies under the island down to a depth of 4 km. The results, once compared with our current knowledge on the geological, geochemical, and geophysical structure of the region, depict Deception as a piecemeal caldera structure coming out of the Bransfield Trough. Highattenuation anomalies contouring the northeastern emerged caldera rim correlate with the locations of sediments. In our interpretation, the main attenuation contrast, which appears under the collapsed southeastern caldera rim, is related to the deeper feeding systems. A unique P-wave high-attenuation spherical-like anomaly in the inner bay extends between depths of 1 and 3 km. The northern contour of the anomaly coincides with the calderic rim both at 1 and 2 km, while smaller anomalies connect it with deeper structures below 3 km, dipping toward the Bransfield Trough. In our interpretation, the large upper anomaly is caused by a high-temperature shallow (1-3 km deep) geothermal system, located beneath the sediment-filled bay in the collapsed blocks and heated by smaller, deeper contributions of molten materials (magma) rising from southeast.

show abstract

The three-dimensional structure beneath the Popocatépetl volcano (Mexico) based on local earthquake seismic tomography

Cited by 27 publications

References 31 publications

Fault‐Associated Magma Conduits Beneath Volcán de Colima Revealed by Seismic Velocity and Attenuation Tomography Studies

Fault‐Associated Magma Conduits Beneath Volcán de Colima Revealed by Seismic Velocity and Attenuation Tomography Studies

Seismicity and structure of Akutan and Makushin Volcanoes, Alaska, using joint body and surface wave tomography

The 3D Attenuation Structure of Deception Island (Antarctica)

Contact Info

Product

Resources

About