Upward shifts in elevational limits of forest and grassland for Mexican volcanoes over three decades

Biotropica ◽  
2021 ◽  
Author(s):  
Daniel Jiménez‐García ◽  
Xingong Li ◽  
Andrés Lira‐Noriega ◽  
Andrew Townsend Peterson
Keyword(s):  
Mexican Volcanoes

Late-Quaternary secular variation data from Mexican volcanoes

2019 ◽  
Vol 519 ◽  
pp. 28-39 ◽  
Author(s):  
Ahmed Nasser Mahgoub ◽  
Erick Juárez-Arriaga ◽  
Harald Böhnel ◽  
Claus Siebe ◽  
Francisco Javier Pavón-Carrasco
Keyword(s):  
Secular Variation ◽  
Late Quaternary ◽  
Mexican Volcanoes ◽  
Variation Data

scholarly journals A New Inclusive Volcanic Risk Ranking, Part 1: Methodology

2021 ◽  
Vol 9 ◽  
Author(s):  
Amiel Nieto-Torres ◽  
Leticia Freitas Guimarães ◽  
Costanza Bonadonna ◽  
Corine Frischknecht
Keyword(s):  
Risk Reduction ◽  
Latin American ◽  
Time Window ◽  
Volcanic Field ◽  
Sensitivity Analyses ◽  
Volcanic Risk ◽  
Hazard Exposure ◽  
Risk Ranking ◽  
Mexican Volcanoes ◽  
The Impact

The ever-increasing population living near active volcanoes highlights the need for the implementation of effective risk reduction measures to save lives and reduce the impact of volcanic unrest and eruptions. To help identify volcanic systems associated with potential high risk and prioritize risk reduction strategies, we introduce a new Volcanic Risk Ranking (VRR) methodology that integrates hazard, exposure, and vulnerability as factors that increase risk, and resilience as a factor that reduces risk. Here we present a description of the methodology using Mexican volcanoes as a case study, while a regional application to Latin American volcanoes is presented in a companion paper (Guimarães et al., submitted). With respect to existing strategies, the proposed VRR methodology expands the parameters associated with hazard and exposure and includes the analysis of 4 dimensions of vulnerability (physical, systemic, social, economic) and of resilience. In particular, we propose 41 parameters to be analyzed, including 9 hazard parameters, 9 exposure parameters, 10 vulnerability parameters and 13 resilience parameters. Since the number of parameters evaluated for each risk factor is different, they are normalized to have the same weight based on dedicated sensitivity analyses. In order to best illustrate the methodology, the proposed VRR is here applied to 13 Mexican volcanoes and compared with other approaches. We found that the volcanoes associated with the highest combination of hazard, exposure and vulnerability (3-factor VRR) for this geographic area are Tacaná and El Chichón regardless of the analyzed time window of eruption occurrence (i.e., <1 and <10 ka). Nonetheless, the volcanoes with eruption <1 ka that require the most urgent actions as associated with no or few resilience measures in place are Michoacán-Guanajuato Volcanic Field and San Martín Tuxtla (4-factor VRR); the top volcanoes in the 4-factor VRR with eruption <10 ka are Michoacán-Guanajuato Volcanic Field and Las Cumbres.

scholarly journals Ground Deformations Controlled by Hidden Faults: Multi-Frequency and Multitemporal InSAR Techniques for Urban Hazard Monitoring

2019 ◽  
Vol 11 (19) ◽  
pp. 2246 ◽  
Author(s):  
Murgia ◽  
Bignami ◽  
Brunori ◽  
Tolomei ◽  
Pizzimenti
Keyword(s):  
Ground Deformation ◽  
Spatial Arrangement ◽  
Temporal Analysis ◽  
Ground Fissures ◽  
Ground Deformations ◽  
Mexican Volcanoes ◽  
Multi Temporal ◽  
Northern Side

This work focuses on the study of land subsidence processes by means of multi-temporal and multi-frequency InSAR techniques. Specifically, we retrieve the long-term evolution (2003–2018) of the creeping phenomenon producing ground fissuring in the Ciudad Guzmán (Jalisco state, Mexico) urban area. The city is located on the northern side of the Volcan de Colima area, one of the most active Mexican volcanoes. On September 21 2012, Ciudad Guzmán was struck by ground fissures of about 1.5 km of length, causing the deformation of the roads and the propagation of fissures in adjacent buildings. The field surveys showed that fissures follow the escarpments produced during the central Mexico September 19 1985 Mw 8.1 earthquake. We extended the SAR (Synthetic Aperture Radar) interferometric monitoring starting with the multi-temporal analysis of ENVISAT and COSMO-SkyMed datasets, allowing the monitoring of the observed subsidence phenomena affecting the Mexican city. We processed a new stack of Sentinel-1 TOPSAR acquisition mode images along both descending and ascending paths and spanning the 2016–2018 temporal period. The resulting long-term trend observed by satellites, together with data from volcanic bulletin and in situ surveys, seems to suggest that the subsidence is due to the exploitation of the aquifers and that the spatial arrangement of ground deformation is controlled by the position of buried faults.

scholarly journals Some old Mexican volcanoes

1907 ◽  
Vol 23 (6) ◽  
pp. 281-312
Author(s):  
Henry M. Cadell
Keyword(s):  
Mexican Volcanoes

Water chemistry of lakes related to active and inactive Mexican volcanoes

2008 ◽  
Vol 178 (2) ◽  
pp. 249-258 ◽  
Author(s):  
María Aurora Armienta ◽  
Gloria Vilaclara ◽  
Servando De la Cruz-Reyna ◽  
Silvia Ramos ◽  
Nora Ceniceros ◽  
...  
Keyword(s):  
Water Chemistry ◽  
Mexican Volcanoes
Sign in / Sign up

Export Citation Format

Share Document