Results 41 to 50 of about 1,696 (112)

Major fluvial erosion and a 500‐Mt sediment pulse triggered by lava‐dam failure, Río Coca, Ecuador

Earth Surface Processes and Landforms, Volume 49, Issue 3, Page 1058-1080, 15 March 2024.
The failure of a 144‐m‐high lava dam on the Río Coca, Ecuador, in 2020 initiated major regressive erosion as the river evolved towards a new equilibrium grade. Erosion generated a 277 million m3, ~500 Mt sediment pulse over three years, one of the largest in modern times.
Pedro D. Barrera Crespo, Pablo Espinoza Girón, Renán Bedoya, Stanford Gibson, Amy E. East, Eddy J. Langendoen, Paul Boyd   +6 more
wiley   +1 more source

Characterizing Volcanic Ash Density and Its Implications on Settling Dynamics

Journal of Geophysical Research: Atmospheres, Volume 129, Issue 2, 28 January 2024.
Abstract Volcanic ash clouds are carefully monitored as they present a significant hazard to humans and aircraft. The primary tool for forecasting the transport of ash from a volcano is dispersion modeling. These models make a number of assumptions about the size, sphericity and density of the ash particles. Few studies have measured the density of ash
Sing Lau, Roy G. Grainger, Isabelle A. Taylor   +2 more
wiley   +1 more source

On the likelihood of future eruptions in the Chilean Southern Volcanic Zone: interpreting the past century's eruption record based on statistical analyses [PDF]

, 2012
A sequence of 150 explosive eruptions recorded during the past century at the Chilean Southern Volcanic Zone (SVZ) is subjected to statistical time series analysis. The exponential, Weibull, and log-logistic distribution functions are fit to the eruption
Dzierma, Yvonne, Wehrmann, Heidi
core   +2 more sources

Tephra stratigraphy and eruptive volume of the May, 2008, Chaitén eruption, Chile [PDF]

, 2018
On May 1st 2008 Mount Chaitén (southern Chile) interrupted a long period of quiescence, generating a sequence of explosive eruptions and causing the evacuation of Chaitén town located a few kilometers south of the volcano.
Alfano, Fabrizio, Bonadonna, Costanza, Connor, Charles, Connor, Laura, Pyle, David, Volentik, Alain, Watt, Sebastian   +6 more
core  

Evacuation planning in the Auckland Volcanic Field, New Zealand: a spatio-temporal approach for emergency management and transportation network decisions [PDF]

, 1996
Auckland is the largest city in New Zealand (pop. 1.5 million) and is situated atop an active monogenetic volcanic field. When volcanic activity next occurs, the most effective means of protecting the people who reside and work in the region will be to
Tomsen, E., Lindsay, J.N., Gahegan, M., Wilson, T.M., Blake, D.M.   +4 more
core   +1 more source

Animal welfare impact following the 4 September 2010 Canterbury (Darfield) earthquake [PDF]

, 2011
At 4.35am on Saturday 4 September 2010, a magnitude 7.1 earthquake struck near the township of Darfield in Canterbury leading to widespread damage in Christchurch and the wider central Canterbury region.
Glassey, S., Wilson, T.M.
core  

Lithic technology at the mouth of Santa Cruz river: an approach from the analysis of the artifactual assemblage of Puntos 37 y 96 of Punta Entrada [PDF]

, 2016
El objetivo principal de este trabajo es conocer y discutir las decisiones y estrategias tecnológicas seguidas en relación con el uso de las materias primas y el modo en que realizaron los instrumentos líticos los grupos cazadores-recolectores de la ...
Cañete Mastrángelo, Daniela Soledad
core   +2 more sources

3_D modeling using TLS and GPR techniques to characterize above and below-ground wood distribution in pyroclastic deposits along the Blanco River (Chilean Patagonia) [PDF]

, 2016
To date, the study of in-stream wood in rivers has been focused mainly on quantifying wood pieces deposited above the ground. However, in some particular river systems, the presence of buried dead wood can also represent an important component of wood ...
Alvarado, D, Fuentes, C, Iroum\ue9, A, Lenzi, MARIO ARISTIDE, Picco, Lorenzo, Tonon, Alessia, Valdebenito, G   +6 more
core  

Volcanic Contribution to Decadal Changes in Tropospheric Temperature [PDF]

, 2013
Despite continued growth in atmospheric levels of greenhouse gases, global mean surface and tropospheric temperatures have shown slower warming since 1998 than previously.
A Robock, B Hassler, BD Santer, BD Santer, BD Santer, Benjamin D. Santer, C Mears, Carl Mears, CP Morice, Céline Bonfils, DT Shindell, DWJ Thompson, Frank J. Wentz, G Kopp, GA Meehl, Gavin A. Schmidt, J-P Vernier, Jason N. S. Cole, JC Fyfe, JC Fyfe, Jeffrey F. Painter, John C. Fyfe, JR Christy, K Kosaka, Karl E. Taylor, Larissa Nazarenko, M Sato, Mark D. Zelinka, NG Loeb, R. R. Neely, S Solomon, S Solomon, Susan Solomon, TM Smith, TML Wigley, V Eyring, V Ramaswamy   +36 more
core   +2 more sources

The 600 yr eruptive history of Villarrica Volcano (Chile) revealed by annually laminated lake sediments [PDF]

, 2014
Lake sediments contain valuable information about past volcanic and seismic events that have affected the lake catchment, and they provide unique records of the recurrence interval and magnitude of such events.
De Batist, M., De Clercq, M., Fontijn, K., Heirman, K., Moernaut, J., Pino, M., Roberts, S.J., Schmidt, S., Silversmit, G., Urrutia, R., Van Acker, J., Van Daele, M., Vandoorne, W., Vincze, L., Wolff, C.   +14 more
core   +1 more source