Velio Coviello

Velio Coviello
Italian National Research Council | CNR · Research Institute for Geo-Hydrological Protection IRPI

PhD

About

73
Publications
20,381
Reads
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627
Citations
Citations since 2016
44 Research Items
536 Citations
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Introduction
My research focuses on the characterisation of mass movement in Alpine and volcanic environment. In particular, I deal with seismic monitoring of lahars, debris flows and other torrential processes for the development of early warning systems. My research interests also concern soil erosion and water management. My career goal would be to join research and action for natural hazards management.
Additional affiliations
November 2017 - December 2020
Free University of Bozen-Bolzano
Position
  • Research Associate
February 2016 - October 2017
Universidad Nacional Autónoma de México
Position
  • PostDoc Position
May 2014 - June 2014
United States Geological Survey
Position
  • Researcher
Education
September 2007 - March 2008
March 2007 - May 2009
Politecnico di Torino
Field of study
  • Civil and Environmental Engineering

Publications

Publications (73)
Article
Full-text available
The Volcán de Colima, one of the most active volcanoes in Mexico, is commonly affected by tropical rains related to hurricanes that form over the Pacific Ocean. In 2011, 2013 and 2015 hurricanes Jova, Manuel and Patricia, respectively, triggered tropical storms that deposited up to 400 mm of rain in 36 h, with maximum intensities of 50 mm h ⁻¹. The...
Article
Full-text available
Debris flows represent a major hazard in mountainous areas, due to their rapid motion along steep channels and to the transport of large sediment volumes, including large boulders. In this paper, we present data of channelized debris flows characterized by different velocities and sediment concentrations recorded in an instrumented channel reach of...
Article
Full-text available
The 2017 Mw 7.1 Puebla–Morelos intraslab earthquake (depth: 57 km) severely hit Popocatépetl Volcano, located ∼ 70 km north of the epicenter. The seismic shaking triggered shallow landslides on the volcanic edifice, mobilizing slope material saturated by the 3 d antecedent rainfall. We produced a landslide map based on a semi-automatic classificati...
Chapter
Active volcanoes are an incredible source of loose material, pyroclastic fragments that emplace as rain or flow on their slopes, forming m-thick deposits during explosive eruption. In particular, eruptive columns can elevate through the atmosphere for several kilometers, from which ash and pyroclastic fragments can fall, mantling the surrounding ar...
Article
Full-text available
In mountain rivers, long-term observations of water and sediment fluxes are crucial for understanding the dynamics of bedload fluctuations. We analyze 7 years of continuous data gathered from 8 geophone plates at a monitoring station in the glacier-fed Sulden/Solda River (South Tyrol, Italy) to estimate the bedload flux at 1-min scale. Sixty-five b...
Article
Full-text available
The estimation of debris flow velocity and volume is a fundamental task for the development of early warning systems and the design of control structures and of other mitigation measures. Debris flow velocity can be calculated using seismic data recorded at two monitoring stations located along the channel, and previous analysis of the seismic ener...
Preprint
In mountain rivers, long-term observations of water and sediment fluxes are crucial for understanding the dynamics of bedload fluctuations at multiple temporal scales. Here we analyze 7 years of data gathered at a bedload monitoring station in the glacier-fed Sulden/Solda River (South Tyrol, Italy). Continuous seismic data gathered from 8 geophone...
Conference Paper
Full-text available
The ambition of this symposium was to review and create knowledge and praxis in bedload management, support the implementation of restoration measures in Switzerland and strengthen the international network among scientists and practitioners. Switzerland has the legal goal and the financial tools to restore its rivers from the impacts of sediment...
Conference Paper
Full-text available
Debris flows are among the most dangerous natural hazards that threaten people and infrastructures in mountainous areas. In the 1960s, efforts and investments devoted to build channel control structures such as check-dams and retention basins multiplied all over the Alps. However, in narrow and anthropized valleys there is not always enough space f...
Article
In mountain basins, long-term instrumental monitoring coupled with high-resolution topographic surveys can provide important information on sediment yield. The Gadria catchment, located in the eastern Italian Alps, typically features several low-magnitude flood episodes and a few debris-flow events per year, from late spring to late summer. Beginni...
Preprint
Full-text available
The estimation of debris-flow velocity and volume is a fundamental task for the development of early warning systems, the design of control structures and other mitigation measures. Previous analysis of the seismic energy produced by debris flows showed that the peak amplitudes are representative of the kinetic energy of each surge and debris-flow...
Article
Full-text available
Here, we present data from a 3-component broadband seismometer and video camera installed 3 m from the Lumbre channel on Volcán de Colima, Mexico to understand rheology differences within multiple lahar events that occurred in late 2016. We examine differences in frequency and directionality from each seismic component. Results indicate an increase...
Preprint
Full-text available
Abstract. The M7.1 Puebla-Morelos earthquake that occurred on 19 September 2017, with epicenter located ∼ 70 km SW from Popocatépetl volcano, severely hit central Mexico. Seismic shaking of the volcanic edifice induced by the earthquake triggered hundreds of shallow landslides on the volcanic flanks, remobilizing loose pyroclastic deposits and satu...
Article
Connectivity is an emergent property that describes how complex topography favors or impedes sediment transfer processes. In active volcanic areas, high connectivity may lead to extremely efficient processes, such as lahars. The aim of the present study is to examine the behavior (activation–deactivation) of sub-basins affected by volcanic and anth...
Poster
Full-text available
Volcán de Colima (VdC) is considered the most active volcano in México, not only in terms of eruptive activity but also for the high-frequency in lahars generation. In fact, lahars (water and sediment mix flowing down along volcano slopes) are very common at VdC. During the rainy season from May to October, several lahars are originated in main rav...
Conference Paper
Full-text available
In mountainous catchments, the quantification of sediment yield is of paramount relevance for land-use planning and design of sediment control structures. However, deciphering the contribution of the different sediment transport processes (debris flows, debris floods and bedload transport) is often challenging as they are strongly controlled by bas...
Conference Paper
Full-text available
Proglacial streams show complex hydro-sedimentary dynamics controlled by different meltwater contributions and sediment fluxes. This study investigates how these patterns may vary with respect to the degree of debris-cover on the glacier tongue and to the bedrock lithology. The study area is the upper Sulden catchment in the Eastern Italian Alps (1...
Article
Full-text available
We evaluate the performance of the low-cost seismic sensor Raspberry Shake to identify and monitor rockfall activity in alpine environments. The test area is a slope adjacent to the Great Aletsch Glacier in the Swiss Alps, i.e. the Moosfluh deep-seated instability, which has recently undergone a critical acceleration phase. A local seismic network...
Poster
Full-text available
On the 23 rd of October 2015, hurricane Patricia 2015, hurricane Patricia hit Volcán de Colima Volcán de Colima, one of the most active volcanoes in Mexico. The hurricane was announced as category 5, but it rapidly weakened after landfall. Up to 400 mm of rain fell over a 30 hour period. Along the La Lumbre ravine, on the western slope of the volca...
Article
Full-text available
We evaluate the performance of the low-cost seismic sensors Raspberry Shake (RS) to identify and monitor rock fall activity in alpine environments. The test area is a slope adjacent to the Great Aletsch glacier in the Swiss Alps, i.e. the Moosfluh deep-seated instability, which is undergoing an acceleration phase since the late summer 2016. A local...
Poster
Full-text available
In the Alpine region, the long-term evolution of rock slopes is punctuated by failures producing rapid mass wasting causing severe damages. Accurate location, timing and event’s magnitude of slope failures is important to better understand the effects of local and regional predisposing factors and the relationship with potential triggers. Despite,...
Poster
Full-text available
We evaluate the low-cost seismic sensors Raspberry Shake (RS) to identify and monitor rock fall activity in alpine environments. The test area is a slope adjacent to the Great Aletsch glacier in the Swiss Alps, i.e. the Moosfluh deep seated instability, which is undergoing an acceleration phase since the late summer 2016. A local seismic network co...
Conference Paper
Full-text available
Glacierized catchments are important sources of fresh water and sediment, where hydrological and geomorpho-logical processes are strongly coupled. This study analyses the spatial and temporal variability of snowmelt and glacier melt runoff components and their interaction with sediment fluxes by means of hydro-sedimentary, tracer and geophone data...
Article
Full-text available
Pyroclastic density currents (PDCs) represent one of the most dangerous phenomena occurring in explosive volcanic eruptions, and any advance in the physical understanding of their transport and sedimentation processes can contribute to improving their hazard assessment. The 10–11 July 2015 eruption at Volcán de Colima provided a unique opportunity...
Article
We present direct observations and monitoring data of a hyperconcentrated flow that occurred along La Lumbre ravine, one of the most active channels of Volcán de Colima in Mexico. Flow properties were inferred from video images and seismic data recorded by a geophone installed outside the channel. We collected flow samples 400 meters upstream from...
Article
Full-text available
The Volcán de Colima, one of the most active volcanoes in Mexico, is commonly affected by tropical rains related to hurricanes that form over the Pacific Ocean. In 2001, 2013 and 2016 hurricanes Jova, Manuel and Patricia, respectively, promoted tropical storms that accumulated up to 400 mm of rain in 36 hrs, with maximum intensities of 50 mm/hrs. E...
Conference Paper
Mass wasting events occurring on the Earth’s surface may induce seismic signals, which can be recorded also at tens of kilometers from the source area. The waveforms relevant to mass wasting differ from those caused by earthquakes, because they are usually characterized by a cigar shaped waveform, duration of several tens of seconds, and low freque...
Conference Paper
Full-text available
Seismic techniques are increasingly adopted to detect signals induced by mass movements and to quantitatively evaluate geo-hydrological hazards at different spatial and temporal scales. By analyzing landslide-induced seismicity, it is possible obtaining significant information on the source of the mass wasting, as well as on its dynamics. However,...
Conference Paper
Full-text available
Volcán de Colima currently is the most active volcano in Mexico where a number of rain-induced lahars occur each year. After an explosive phase, lahar frequency increases due to the immediate reworking of pyroclastic material and it progressively decreases in the following years. This behavior was distinctly observed during the two last rainy seaso...
Conference Paper
Full-text available
Early Warning Systems (EWSs) for rapid flow-like landslides can be classified into two main types: advance-and event-systems. Advance EWSs predict the flow occurrence by monitoring the parameters that may lead to initiation conditions, typically rainfall. This kind of EWSs are prone to a high number of false alarms because they are strongly affecte...
Article
Full-text available
The output of the seismic devices commonly employed for the monitoring of debris flows, such as geophones and seismometers, is a voltage that is directly proportional to the ground vibration velocity. The output signal in analogical form is usually digitalized at a fixed sampling frequency to be opportunely processed. The processing is performed to...
Article
Full-text available
One of the most common phenomena at Volcán de Colima is the annual development of lahars that runs mainly through the southern ravines of the edifice. Since 2011 the study and the monitoring of these flows and of the associated rainfall has been achieved by means of an instrumented station located along the Montegrande ravine, together with the sys...
Article
Full-text available
We propose a new real-time approach to detect, locate, and estimate the volume of rockslides by analyzing waveforms acquired from broadband regional seismic networks. The identification of signals generated by rockslides from other sources, such as natural and/or induced earthquakes, is accomplished by exploiting the ratio between local magnitudes...
Chapter
Full-text available
In order to evaluate the exploitation of broad-band seismic networks for landslide characterization , we selected a number of well known mass movements occurred in the Italian Alps, characterized by volumes ranging between 25.000 and 34.000.000 cubic meters and different failure dynamics. We analyzed the related seismic signals recorded by seismic...
Article
Full-text available
One of the most common phenomenon at Volcán de Colima is the annual development of lahars that runs mainly through the southern ravines of the edifice. Since 2011 the study and the monitoring of these flows and of the associated rainfall has been achieved by means of an instrumented station located in Montegrande ravine, together with the systemati...
Article
Full-text available
The detection of debris flows through seismic devices occurs at a certain distance from the channel bed. Ground vibration detectors are installed outside of the flow path, usually along the banks of the torrent or on the surrounding valley slopes, in order to avoid damage or even complete destruction. Seismic networks, however, are also prone to de...
Article
Debris flows generate seismic waves as they travel downslope and can become more dangerous as they entrain sediment along their path. We present field observations that show a systematic relation between the magnitude of seismic waves and the amount of erodible sediment beneath the flow. Specifically, we observe that a debris flow traveling along a...
Chapter
Standardization of measurement procedures and their systematic performance are important goals in every field of science and are in general intensely pursued by scientists in many of their research activities. Certain phenomena, however, present particularly difficult challenges in this regard and many efforts are still needed to actually reach sta...
Article
Full-text available
A permanent field installation for the systematic test of debris flow warning systems and algorithms has been equipped on the eastern Italian Alps. The installation was also designed to produce didactic videos and it may host informative visits. The populace education is essential and should be envisaged in planning any research on hazard mitigatio...
Thesis
Debris flows are among the most dangerous and destructive natural phenomena that may occur in mountainous regions. The joint effect of population growth and augmentation of built-up areas is resulting in the increase of risk associated to debris flows. Long-term instrumental observations can provide fundamental information for a sustainable land-us...
Conference Paper
Full-text available
A growing number of studies adopt passive seismic monitoring techniques to investigate slope instabilities and landslide processes. These techniques are attractive and convenient because large areas can be monitored from a safe distance. This is particularly true when the phenomena under investigation are rapid and infrequent mass movements like de...
Article
Full-text available
Early warning systems (EWSs) are among the measures adopted for the mitigation of debris flow hazards. EWSs often employ algorithms that require careful and long testing to grant their effectiveness. A permanent installation has been so equipped in the Gadria basin (Eastern Italian Alps) for the systematic test of event-EWSs. The installation is co...
Chapter
Full-text available
Recent climate changes are increasing the frequency of rock-slope instabilities in the Alpine region. The formation of cracks leading to rockfalls causes a release of energy propagating in form of elastic waves. These latter can be detected by a suitable transducer array together with the vibrations generated by the impact of rockfalls. Geophones a...
Conference Paper
Full-text available
Broadband seismic networks at regional, national, and global scale are usually deployed for a specific purpose, i.e. earthquake monitoring. However, it has been recently demonstrated that these networks are also capable to efficiently detect failure and transport processes related to landslide phenomena. Indeed, stations located several tens of kil...
Poster
Full-text available
Soil erosion is currently menacing the availability of arable land in various countries worldwide. In particular the countries located in the Sahel area of Sub-Saharan Africa are extremely prone to this type of environmental degradation. The same countries rely traditionally upon subsistence farming, which makes the population more vulnerable to en...
Article
Ground vibration sensors have been increasingly used and tested, during the last few years, as devices to monitor debris flows and they have also been proposed as one of the more reliable devices for the design of debris flow warning systems. The need to process the output of ground vibration sensors, to diminish the amount of data to be recorded,...
Chapter
Full-text available
Soil and Water Conservation (SWC) measures have been regularly employed in the Sahelian area to reduce soil erosion and reservoir siltation. However, a proper cost-effectiveness analysis of the impact of SWC interventions on the catchment sediment budget is rarely carried out. In this paper, a semi-quantitative model is proposed to evaluate the cos...
Chapter
Full-text available
Gabion check dams (GCDs) are among the most diffused soil and water conservation practices in Burkina Faso, used to cope with soil loss and reservoir siltation. Specifically, CGDs are flexible, permeable structures built in gullies to create a sedimentation bench that decreases the average upstream slope. The consequent slowing-down of the flowing...
Chapter
Full-text available
In site characterisation studies, the unambiguous determination of the shear-wave velocity (VS) vertical profile is a crucial point often accomplished via surface-wave analysis. The determination of the dispersive properties eventually inverted for the determination of the VS vertical profile, can be performed both via active and passive methodolog...