Roberto Alfaro
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ralfaroal.bsky.social
Roberto Alfaro
@ralfaroal.bsky.social
9 followers 27 following 13 posts
Prof. asociado Universidad Nacional del Altiplano, curioso de la ciencia de ríos, recursos hidricos y suelos
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Reposted by Roberto Alfaro
ufgeog.bsky.social
Morphodynamics and riverbed elevation changes in the lower Apalachicola River: a study of large lowland river systems, by Ali R. Alruzuq, @rockyrivers.bsky.social, Amobichukwu C. Amanambu, Yin-Hsuen Chen & Mark Brenner link.springer.com/article/10.1...
Morphodynamics and riverbed elevation changes in the lower Apalachicola River: a study of large lowland river systems - Acta Geophysica
Extensive research has been conducted on the effects of anthropogenic practices on lowland rivers and floodplains; particularly regarding planform changes, only a few studies have utilized detailed ri...
link.springer.com
December 4, 2025 at 1:32 PM
ralfaroal.bsky.social
New paper Impact of Mining on Socioeconomic Status in Puno, Peru doi.org/10.3390/su17229951, mdpi.com/3579672 #mdpisustainability
November 11, 2025 at 2:50 AM
Reposted by Roberto Alfaro
upc.edu
Les precipitacions extremes registrades durant la DANA a València podrien tenir un període de retorn de només 47 anys, i no de 500 com s’havia estimat inicialment.

➡️ Així ho indica un estudi del Centre de Política de Sòl i Valoracions (CPSV) de la #UPC.
www.upc.edu/ca/sala-de-p...
Les pluges extremes com la DANA a València podrien repetir-se cada 47 anys, segons un estudi del Centre de Política de Sòl i Valoracions de la UPC - UPC Universitat Politècnica de Catalunya
www.upc.edu
October 29, 2025 at 7:13 AM
ralfaroal.bsky.social
New paper Assessment of sediment grain size and hydraulic interactions in urban drainage systems: a case study from Juliaca, Peru
doi.org/10.4136/ambi...
October 24, 2025 at 4:45 PM
Reposted by Roberto Alfaro
upc.edu
La #UPC lidera un projecte per restaurar rius urbans i prevenir inundacions en ciutats europees

✅ És una de les iniciatives seleccionades en la convocatòria 2025 del programa Unite! Seed Fund.

#letsUnite

www.lavanguardia.com/launi/202509...
La UPC lidera un projecte per restaurar rius urbans i prevenir inundacions en ciutats europees
La Universitat Politècnica de Catalunya s'ha proposat liderar el projecte 'Flood-Resilient Urban Rivers: En Collaborative Approach to Restoration', una de...
www.lavanguardia.com
September 15, 2025 at 8:13 AM
Reposted by Roberto Alfaro
zzsylvester.bsky.social
Short paper in @joss-openjournals.bsky.social on 'segmenteverygrain', a machine learning model for segmenting grains in images. Review process: a bit slow, but transparent, friendly, rigorous, and useful joss.theoj.org/papers/10.21...
Photo of fluvial gravel from Barton Creek, Austin, Texas (A), output of the segmentation (B), size distributions of the major and minor grain axes (C), and the area-weighted size distributions (D). Major grain axis lengths are shown in blue, minor grain axis lengths in orange.
August 12, 2025 at 1:07 PM
ralfaroal.bsky.social
New paper Contamination of Urban Sediment by Harmful Heavy Metals in High Vehicular Traffic Zones of Juliaca, Peru
doi.org/10.13189/eer.2025.130305
June 21, 2025 at 2:22 AM
ralfaroal.bsky.social
Variación espacial de la contaminación por metales pesados ​​en el agua urbana del canal Shyamasundori, Bangladesh: Urban Water Journal: Vol 0, No 0 www.tandfonline.com/doi/metrics/...
Spatial variation of heavy metal contamination in urban water of the Shyamasundori canal, Bangladesh: Urban Water Journal: Vol 0, No 0
We’re here to help
www.tandfonline.com
May 12, 2025 at 2:54 AM
Reposted by Roberto Alfaro
elcomercio.pe
Juliaca: calles inundadas tras ocho horas de intensas lluvias https://elcomercio.pe/peru/puno/juliaca-lluvias-calles-permanecen-inundadas-tras-ocho-horas-de-lluvias-clima-precipitaciones-ultimas-noticia/
Juliaca: calles inundadas tras ocho horas de intensas lluvias
Los centros comerciales de la ciudad cerraron como medida de precaución.
elcomercio.pe
January 28, 2025 at 4:38 PM
Reposted by Roberto Alfaro
limaweather.bsky.social
⚠️AHORA: Se ha producido una intensa lluvia en la ciudad de #Juliaca (Puno), inundando las principales calles y avenidas.🌧️ 1/2 #clima #eltiempo #perú
November 21, 2024 at 8:34 PM
ralfaroal.bsky.social
Fear of the fall of space objects in people of rural communities of the district of Azangaro, Peru doi.org/10.1088/1755...
Fear of the fall of space objects in people of rural communities of the district of Azangaro, Peru - IOPscienceSearch
Fear of the fall of space objects in people of rural communities of the district of Azangaro, Peru, Calatayud-Mendoza, A P, Chui-Betancur, H N, Belizario-Quispe, G, Huaquisto-Ramos, E, Alfaro-Alejo, R
doi.org
February 14, 2025 at 7:55 PM
Reposted by Roberto Alfaro
davepetley.bsky.social
In April 2024, extremely intense precipitation triggered a cluster of over 2,500 landslides in Jiangwan, Guangdong Province, China. Before and after satellite images by @planet.com show the devastation:-
eos.org/thelandslide...
The terrain around Jiangwan in Guangdong Province before the April 2024 rainfall event. Image copyright Planet, used with permission. Image dated 12 March 2024. The image shows very few fresh landslides. The area around Jiangwan in Guangdong Province after the April 2024 rainfall event. Image copyright Planet, used with permission. Image dated 4 November 2024. The image shows hundreds of shallow landslides.
February 12, 2025 at 7:50 AM
ralfaroal.bsky.social
Applications of Google Earth Engine in fluvial geomorphology for detecting river channel change - Boothroyd - 2021 - WIREs Water - Wiley Online Library wires.onlinelibrary.wiley.com/doi/10.1002/...
Applications of Google Earth Engine in fluvial geomorphology for detecting river channel change
Cloud-based computing, access to big geospatial data, and virtualization could revolutionize remote sensing applications in fluvial geomorphology. Google Earth Engine offers transformative potential ...
wires.onlinelibrary.wiley.com
January 19, 2025 at 6:01 PM
ralfaroal.bsky.social
Characterization of expansive soils for the foundation of an irrigation canal in the Peruvian Andes, Cabana-Mañazo case doi.org/10.1088/1755... a través de @ioppublishing
Characterization of expansive soils for the foundation of an irrigation canal in the Peruvian Andes, Cabana-Mañazo case - IOPscienceSearch
Characterization of expansive soils for the foundation of an irrigation canal in the Peruvian Andes, Cabana-Mañazo case, I A Pilares-Hualpa, R Alfaro-Alejo, C A Pilares-Calla, O E Alfaro-Vilca
doi.org
January 19, 2025 at 12:36 AM
Reposted by Roberto Alfaro
davepetley.bsky.social
I have now posted my provisional analysis of fatal landslides in 2024 on my blog. In total, 708 fatal landslides (excluding those triggered by an earthquake), cost 4,492 lives. This is far higher than in any previous year for which I have data.
eos.org/thelandslide....
Published under a CC license.
A map showing the distribution of fatal landslides in 2024. There are two clusters in South Asia, plus others in SE Asia, East Asia, East Africa, SE Brazil, the northwest of South America and in Central America. Author's own data, published under a CC license. If you want a higher resolution version, please contact the author. The cumulative total number of fatal landslides in 2024 compared with previous years. The graph shows that 2024 was exceptional in every respect, with the December total exceeding every previous years by a huge margin.
January 6, 2025 at 8:27 AM
ralfaroal.bsky.social
Traditional Peruvian Medicine: An Insight in Geophagy and Machu Rumi Intake | Scientific.Net www.scientific.net/MSF.1048.423
Traditional Peruvian Medicine: An Insight in Geophagy and Machu Rumi Intake | Scientific.Net
Geophagists are generally defined by culture, social status and gender, and this paper is to identify the chemical elements of the geophagic material called Machu Rumi. The sample was extracted from t...
www.scientific.net
January 11, 2025 at 1:42 AM
ralfaroal.bsky.social
Diagnóstico hidromorfológico básico del tramo medio río Ebro por Ollero, A. et al (2024). El curso medio del río Ebro: bases preliminares para su diagnóstico hidromorfológico y perspectivas de gestión y restauración. doi.org/10.7203/CGUV...
El curso medio del río Ebro: bases preliminares para su diagnóstico hidromorfológico y perspectivas de gestión y restauración | Cuadernos de Geografía de la Universitat de València
doi.org
January 3, 2025 at 5:12 AM
ralfaroal.bsky.social
Read the New Paper. Geo-hydrological Risk Awareness and Disaster Preparedness in a Mountainous Area of Southern Peru Vulnerable to Disaster by R. Alfaro-Alejo, et al., doi.org/10.1088/1755...
#Crop #ClimateChange #Aquacrop #iop #UnaPuno
#FiaUnap #Puno
Geo-hydrological Risk Awareness and Disaster Preparedness in a Mountainous Area of Southern Peru Vulnerable to Disaster - IOPscienceSearch
Geo-hydrological Risk Awareness and Disaster Preparedness in a Mountainous Area of Southern Peru Vulnerable to Disaster, Roberto Alfaro-Alejo, Rene P. Paredes-Mamani, Julio Montenegro-Gambini, Germán ...
doi.org
December 24, 2024 at 8:08 PM
ralfaroal.bsky.social
Welcome to read the New Paper. Evaluating the Yields of the Rainfed Potato Crop under Climate Change Scenarios Using the AquaCrop Model in the Peruvian Altiplano by Jesus Puma-Cahua, et al., doi.org/10.3390/su16...
#Crop #ClimateChange #Aquacrop #mdpi #UnaPuno #FiaUnap #Puno
Evaluating the Yields of the Rainfed Potato Crop under Climate Change Scenarios Using the AquaCrop Model in the Peruvian Altiplano
Ensuring global food security and adapting to the challenges posed by climate change, particularly in rainfed agriculture, are paramount concerns. This research investigates the impacts of climate cha...
doi.org
December 24, 2024 at 7:53 PM
ralfaroal.bsky.social
New paper Geoinformatics-Based Morphologic Analysis of the Ramis River, an Endorheic Andean River
doi.org/10.1007/978-... by
@ralfaroal.bsky.social
et al
#UnaPuno #FiaUnap #fluvial #Titicaca #Puno #Altiplano
Geoinformatics-Based Morphologic Analysis of the Ramis River, an Endorheic Andean River
One way to quantify the various morphometric features of a river is through morphology. The North–south-flowing Ramis River is a major tributary of Lake Titicaca, one of the world’s larges...
doi.org
December 24, 2024 at 7:26 PM
Reposted by Roberto Alfaro
kinarnicholas.bsky.social
Hydrology Paper of the Day @Alii_Ashrafii on understanding how the civil engineering of rice paddy field drainage systems affects soil moisture and soil physics: an experimental site model with three different soil layers and quantifying drainage discharge and spatial variations.
Performance of surface, subsurface and trench‐type drainage systems in paddy fields for non‐rice farming
Effective drainage is a crucial factor in paddy fields, especially in regions with waterlogging or heavy clay soils. Identifying an effective drainage system is essential for the successful removal o...
onlinelibrary.wiley.com
May 2, 2024 at 2:06 AM
ralfaroal.bsky.social
Excelente video del Dr. Victor Miguel Ponce acerca del lago #Titicaca
#LakeTiticaca #laketitikaka #Puno

Facts on Lake Titicaca, Peru and Bolivia
youtu.be/uqgAhMItnWE
Facts on Lake Titicaca, Peru and Bolivia
YouTube video by konvideoful
youtu.be
December 24, 2024 at 6:41 PM