scholarly journals Brief communication: Preliminary hydro-meteorological analysis of the flash flood of 20 August 2018 in Raganello Gorge, southern Italy

2019 ◽  
Vol 19 (8) ◽  
pp. 1619-1627 ◽  
Author(s):  
Elenio Avolio ◽  
Ottavio Cavalcanti ◽  
Luca Furnari ◽  
Alfonso Senatore ◽  
Giuseppe Mendicino
Keyword(s):  
Southern Italy ◽  
Flash Flood ◽  
Rainfall Event ◽  
Rain Gauges ◽  
Spatial Coverage ◽  
Hydrological Impact ◽  
First Results ◽  
Scientific Report ◽  
Fully Coupled ◽  
Meteorological Analysis

Abstract. On 20 August 2018 a flash flood affected the Raganello Creek (southern Italy) causing 10 casualties. The rainfall event was so highly localized that the spatial coverage of rain gauges were inadequate to measure it, while radar products showed a storm cell with rain peaks of about 70–100 mm h−1. This scientific report provides a preliminary hydro-meteorological analysis of the event and evaluates the forecasting skills of a system based on the WRF–WRF-Hydro models, using both one-way and fully coupled approaches. The first results show a reasonable simulation of the event in terms of both rainfall and hydrological impact.

scholarly journals Brief communication: Preliminary hydro-meteorological analysis of the flash flood of 20 August 2018 on Raganello Gorge, Southern Italy

2019 ◽  
Author(s):  
Elenio Avolio ◽  
Ottavio Cavalcanti ◽  
Luca Furnari ◽  
Alfonso Senatore ◽  
Giuseppe Mendicino
Keyword(s):  
Southern Italy ◽  
Flash Flood ◽  
Rainfall Event ◽  
Rain Gauges ◽  
Spatial Coverage ◽  
Hydrological Impact ◽  
First Results ◽  
Scientific Report ◽  
Fully Coupled ◽  
Meteorological Analysis

Abstract. On 20 August 2018 a flash flood affected the Raganello Creek (Southern Italy) causing 10 casualties. The rainfall event was so highly localized that the spatial coverage of rain gauges resulted inadequate to measure it, while radar products showed a storm cell with rain peaks of about 70–100 mm/h. This scientific report provides a preliminary hydro-meteorological analysis of the event and evaluates the forecasting skills of a system based on the WRF/WRF-Hydro models, using both one-way and fully-coupled approaches. First results show a satisfactory simulation of the event in terms of both rainfall and hydrological impact.

scholarly journals Rainstorms able to induce flash floods in a Mediterranean-climate region (Calabria, southern Italy)

2014 ◽  
Vol 14 (9) ◽  
pp. 2423-2434 ◽  
Author(s):  
O. G. Terranova ◽  
S. L. Gariano
Keyword(s):  
Mediterranean Climate ◽  
Southern Italy ◽  
Flash Flood ◽  
Temporal Structure ◽  
Flash Floods ◽  
Rain Gauges ◽  
Mediterranean Countries ◽  
Preliminary Validation ◽  
The Mediterranean ◽  
Landslides And Debris Flows

Abstract. Heavy rainstorms often induce flash flooding, one of the natural disasters most responsible for damage to man-made infrastructures and loss of lives, also adversely affecting the opportunities for socio-economic development of Mediterranean countries. The frequently dramatic damage of flash floods are often detected, with sufficient accuracy, by post-event surveys, but rainfall causing them are still only roughly characterized. With the aim of improving the understanding of the temporal structure and spatial distribution of heavy rainstorms in the Mediterranean context, a statistical analysis was carried out in Calabria (southern Italy) concerning rainstorms that mainly induced flash floods, but also shallow landslides and debris flows. Thus, a method is proposed – based on the overcoming of heuristically predetermined threshold values of cumulated rainfall, maximum intensity, and kinetic energy of the rainfall event – to select and characterize the rainstorms able to induce flash floods in the Mediterranean-climate countries. Therefore, the obtained (heavy) rainstorms were automatically classified and studied according to their structure in time, localization, and extension. Rainfall-runoff watershed models can consequently benefit from the enhanced identification of design storms, with a realistic time structure integrated with the results of the spatial analysis. A survey of flash flood events recorded in the last decades provides a preliminary validation of the method proposed to identify the heavy rainstorms and synthetically describe their characteristics. The notable size of the employed sample, including data with a very detailed resolution in time that relate to several rain gauges well-distributed throughout the region, gives robustness to the obtained results.

scholarly journals Rainstorms able to induce flash floods in a Mediterranean-climate region (Calabria, southern Italy)

2014 ◽  
Vol 2 (3) ◽  
pp. 2049-2078 ◽  
Author(s):  
O. G. Terranova ◽  
S. L. Gariano
Keyword(s):  
Mediterranean Climate ◽  
Southern Italy ◽  
Flash Flood ◽  
Temporal Structure ◽  
Flash Floods ◽  
Rain Gauges ◽  
Mediterranean Countries ◽  
Preliminary Validation ◽  
The Mediterranean ◽  
Landslides And Debris Flows

Abstract. Heavy rainstorms often induce flash flooding, one of the natural disasters most responsible for damage to man-made infrastructure and loss of lives, adversely affecting also the opportunities for socio-economic development of Mediterranean Countries. The frequently dramatic damage of flash floods are often detected with sufficient accuracy by post-event surveys, but rainfall causing them are still only roughly characterized. With the aim of improving the understanding of the temporal structure and spatial distribution of heavy rainstorms in the Mediterranean context, a statistical analysis was carried out in Calabria (southern Italy) concerning rainstorms that mainly induced flash floods, but also shallow landslides and debris-flows. Thus a method is proposed – based on the overcoming of heuristically predetermined threshold values of cumulated rainfall, maximum intensity, and kinetic energy of the rainfall event – to select and characterize the rainstorms able to induce flash floods in the Mediterranean-climate Countries. Therefore the obtained (heavy) rainstorms were automatically classified and studied according to their structure in time, localization and extension. Rainfall-runoff watershed models can consequently benefit from the enhanced identification of design storms, with a realistic time structure integrated with the results of the spatial analysis. A survey of flash flood events recorded in the last decades provides a preliminary validation of the method proposed to identify the heavy rainstorms and synthetically describe their characteristics. The notable size of the employed sample, including data with a very detailed resolution in time, that relate to several rain gauges well-distributed throughout the region, give robustness to the obtained results.

scholarly journals Characterization of a Mediterranean flash flood event using rain gauges, radar, GIS and lightning data

2008 ◽  
Vol 17 ◽  
pp. 35-41 ◽  
Author(s):  
M. Barnolas ◽  
A. Atencia ◽  
M. C. Llasat ◽  
T. Rigo
Keyword(s):  
Flash Flood ◽  
Radar Data ◽  
Convective Precipitation ◽  
Flood Event ◽  
Flood Events ◽  
Rain Gauges ◽  
Radar Echoes ◽  
Spatial Coverage ◽  
Ephemeral Rivers ◽  
Accumulated Rainfall

Abstract. Flash flood events are very common in Catalonia, generating a high impact on society, including losses in life almost every year. They are produced by the overflowing of ephemeral rivers in narrow and steep basins close to the sea. This kind of floods is associated with convective events producing high rainfall intensities. The aim of the present study is to analyse the 12–14 September 2006 flash flood event within the framework of the characteristics of flood events in the Internal Basins of Catalonia (IBC). To achieve this purpose all flood events occurred between 1996 and 2005 have been analysed. Rainfall and radar data have been introduced into a GIS, and a classification of the events has been done. A distinction of episodes has been made considering the spatial coverage of accumulated rainfall in 24 h, and the degree of the convective precipitation registered. The study case can be considered as a highly convective one, with rainfalls covering all the IBC on the 13th of September. In that day 215.9 mm/24 h were recorded with maximum intensities above 130 mm/h. A complete meteorological study of this event is also presented. In addition, as this is an episode with a high lightning activity it has been chosen to be studied into the framework of the FLASH project. In this way, a comparison between this information and raingauge data has been developed. All with the goal in mind of finding a relation between lightning density, radar echoes and amounts of precipitation. Furthermore, these studies improve our knowledge about thunderstorms systems.

scholarly journals Effect of sowing density and nitrogen top-dress fertilisation on growth and yield of chia (Salvia hispanica L.) in a Mediterranean environment: first results

2015 ◽  
Vol 10 (3) ◽  
pp. 163 ◽  
Author(s):  
Rocco Bochicchio ◽  
Roberta Rossi ◽  
Rosanna Labella ◽  
Giovanni Bitella ◽  
Michele Perniola ◽  
...  
Keyword(s):  
Southern Italy ◽  
Plant Density ◽  
Fruit Production ◽  
Growth And Yield ◽  
Leaf Production ◽  
Salvia Hispanica ◽  
Area Index ◽  
First Results ◽  
Salvia Hispanica L ◽  
Set Up

The demand for sources of nutraceuticals has led to the rediscovery and diffusion of traditional crops such as chia (<em>Salvia hispanica</em> L.), whose leaves and fruits are rich in W3 fatty acids and anti-oxidants. Chia originates in Central America but it is rapidly expanding to new areas. A field experiment conducted at Atella in Basilicata (Southern Italy) was set up to test the response of chia to N top-dress fertilisation (0 and 20 kg ha<sup>–1</sup>) and to sowing density (D1=125, D2=25, D3=8 and D4=4 plants m<sup>–2</sup>) in a split-plot design with three replications. First results show maximum leaf area index values up to 7.1 and fresh vegetative biomass production at early flowering ranging between 50.87 (D4) and 59.71 (D1) t ha<sup>–1</sup>. Yield increased with plant density: a significantly (P&lt;0.01) higher production (398 kg ha<sup>–1</sup>) was reached in D1. N top-dressing had a detrimental effect on yield and corresponded to higher lodging and lower maturation percentage of seeds, though non-significant. Based on our first results it seems worthwhile to continue agronomical trials for chia in herbaceous systems of southern Italy for leaf production based on traditional genotypes, while fruit production might be pursued by adopting high sowing density and the search for longer-day genotypes.

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