scholarly journals The MGB-IPH model for large-scale rainfall—runoff modelling

2007 ◽  
Vol 52 (5) ◽  
pp. 878-895 ◽  
Author(s):  
WALTER COLLISCHONN ◽  
DANIEL ALLASIA ◽  
BENEDITO C. DA SILVA ◽  
CARLOS E. M. TUCCI
Keyword(s):  
Large Scale ◽  
Rainfall Runoff

Satellite soil moisture improves rainfall just where needed

2020 ◽  
Author(s):  
Luca Brocca ◽  
Stefania Camici ◽  
Christian Massari ◽  
Luca Ciabatta ◽  
Paolo Filippucci ◽  
...  
Keyword(s):  
Soil Moisture ◽  
River Discharge ◽  
Large Scale ◽  
River Flow ◽  
Global Scale ◽  
Rain Gauge ◽  
Rainfall Runoff ◽  
Global Precipitation Climatology Centre ◽  
Satellite Rainfall ◽  
Global Precipitation

<p>Soil moisture is a fundamental variable in the water and energy cycle and its knowledge in many applications is crucial. In the last decade, some authors have proposed the use of satellite soil moisture for estimating and improving rainfall, doing hydrology backward. From this research idea, several studies have been published and currently preoperational satellite rainfall products exploiting satellite soil moisture products have been made available.</p><p>The assessment of such products on a global scale has revealed an important result, i.e., the soil moisture based products perform better than state of the art products exactly over regions in which the data are needed: Africa and South America. However, over these areas the assessment against rain gauge observations is problematic and independent approaches are needed to assess the quality of such products and their potential benefit in hydrological applications. On this basis, the use of the satellite rainfall products as input into rainfall-runoff models, and their indirect assessment through river discharge observations is an alternative and valuable approach for evaluating their quality.</p><p>For this study, a newly developed large scale dataset of river discharge observations over 500+ basins throughout Africa has been exploited. Based on such unique dataset, a large scale assessment of multiple near real time satellite rainfall products has been performed: (1) the Early Run version of the Integrated Multi-Satellite Retrievals for GPM (Global Precipitation Measurement), IMERG Early Run, (2) SM2RAIN-ASCAT (https://doi.org/10.5281/zenodo.3405563), and (3) GPM+SM2RAIN (http://doi.org/10.5281/zenodo.3345323). Additionally, gauge-based and reanalysis rainfall products have been considered, i.e., (4) the Global Precipitation Climatology Centre (GPCC), and (5) the latest European Centre for Medium-Range Weather Forecasts reanalysis, ERA5. As rainfall-runoff model, the semi-distributed MISDc (Modello Idrologico Semi-Distribuito in continuo) model has been employed in the period 2007-2018 at daily temporal scale.</p><p>First results over a part of the dataset reveal the great value of satellite soil moisture products in improving satellite rainfall estimates for river flow prediction in Africa. Such results highlight the need to exploit such products for operational systems in Africa addressed to the mitigation of the flood risk and water resources management.</p>

scholarly journals Test of a Modified Rainfall-runoff Model in Large-scale River Basins

2019 ◽  
Author(s):  
Spyros Giakoumakis ◽  
Dimitris Tigkas
Keyword(s):  
Large Scale ◽  
River Basins ◽  
Rainfall Runoff ◽  
Monthly Basis ◽  
Modified Model ◽  
East Central ◽  
Runoff Series ◽  
Rainfall Runoff Model ◽  
Measure Of Performance ◽  
Runoff Model

In this work a modified version of the well-known Simple Water Balance (SWB) model, comprising here three parameters instead of one, was used. Although simple, the model was tested in large-scale river basins in east-central Greece, upstream two hydrometric stations. The available historic runoff records comprised 19 hydrologic years each, on a monthly basis. Thirteen among them were used for calibrating the model, whereas the six subsequent, for validating it. Two different efficiency criteria were used as a measure of performance of the modified model. Their values, calculated for both calibration and validation stages, were close and relatively high. Thus, keeping in mind both the size and complexity of the river basins studied, one can conclude that the modified model, despite its simplistic concept and lumped form, fits satisfactorily the historic runoff series.

Study on the Characteristics of Rainfall Runoff in the Kinugawa River Basin and the Evacuation Behavior of the Residents at the Time of Kanto and Tohoku Flood Disaster in September, 2015

2017 ◽  
Vol 12 (1) ◽  
pp. 176-186 ◽  
Author(s):  
Yoshimasa Morooka ◽  
◽  
Tadashi Yamada ◽  
Keyword(s):  
River Basin ◽  
Large Scale ◽  
Flood Disaster ◽  
Rainfall Runoff ◽  
Rainfall Characteristics ◽  
Temporal Characteristics ◽  
Evacuation Behavior ◽  
Eventual Collapse

This paper discusses the Kinugawa River basin, where an overflow and overtopping of the embankment along with its eventual collapse occurred, resulting in a large-scale inundation during the Kanto and Tohoku Flood Disaster in September 2015. The spatial-temporal characteristics of rainfall, characteristics of rainfall runoff, and evacuation behavior of the residents are investigated and analyzed.

scholarly journals Supplementary material to "Remote sensing-aided large-scale rainfall-runoff modelling in the humid tropics"

2021 ◽  
Author(s):  
Saúl Arciniega-Esparza ◽  
Christian Birkel ◽  
Andrés Chavarría-Palma ◽  
Berit Arheimer ◽  
Agustín Breña-Naranjo
Keyword(s):  
Remote Sensing ◽  
Large Scale ◽  
Humid Tropics ◽  
Rainfall Runoff ◽  
Supplementary Material

scholarly journals LARGE SCALE IMPACTS OF JETTIES AND TRAINING WALLS - EXPERIENCE ON THE AUSTRALIAN EAST COAST

2020 ◽  
pp. 2
Author(s):  
Angus Gordon ◽  
Lex Nielsen
Keyword(s):  
Large Scale ◽  
East Coast ◽  
Flood Mitigation ◽  
Rainfall Runoff ◽  
Littoral Drift ◽  
Adverse Impacts ◽  
Long Term Changes ◽  
And Training ◽  
Eastern Seaboard

Entrance jetties and training walls have instigated fundamental perturbations to coastal and estuary processes at several locations on the Australian eastern seaboard inducing long term changes to foreshore alignments, tidal current velocities, tidal plane elevations and marine ecologies with significant consequences, some having been realised only recently. This paper presents examples of long-term impacts of entrance jetties and training walls on coastal and estuary processes, gleaned from experience on the NSW coast. Jetties constructed at estuary entrances have the potential to alter fundamental coastal and estuary processes inducing changes that evidence indicates may take centuries to resolve. While many beneficial and adverse impacts of jetty construction have been known for many years, such as the improvements to navigation and flood mitigation from rainfall runoff and the interruption to littoral drift transport causing down-drift erosion, some impacts of jetties and training walls have not been well understood.Recorded Presentation from the vICCE (YouTube Link): https://www.youtube.com/watch?v=ARF55RPCPbA&feature=youtu.be

The Effect of Hillslope Geometry on Hortonian Rainfall-Infiltration-Runoff Processes

2021 ◽  
Author(s):  
Jie Wang ◽  
Li Chen
Keyword(s):  
Large Scale ◽  
Soil Property ◽  
Flash Flood ◽  
Hydrological Models ◽  
Rainfall Runoff ◽  
Slope Gradient ◽  
Hydrodynamic Models ◽  
Partial Area ◽  
Runoff Rate ◽  
Main Factors

<p>  Topography, one of the main factors in hillslope rainfall-runoff processes, is related to many environment problems initiated by rainfall, such as flash flood, soil erosion, and landslides, and crucial in hillslope hydrological models and large-scale hydrological-hydrodynamic models. This research investigated the effects of topography abstracted by the combination of longitudinal profile curvature and plan shape on the Hortonian rainfall-runoff processes. The results show that different profile curvature and plan shape leads to more than 10% difference in cumulative runoff and runoff rate and more than 20% difference in ponding time. Similar infiltration and runoff processes can occur on different hillslopes because of the similar slope gradient distributions, and partial area runoff can also occur in these hillslopes. The run-on effect causes more infiltration on convex hillslope topography. The soil property and rainfall temporal variability do not change the trends but can alter the magnitudes of the hillslope geometry effect. The study provides insights into the rainfall runoff processes on natural hillslopes that could benefit studies related to hillslope hydrology and geomorphology.</p>

Using Lidar and GIS to Investigate Water and Soil Management in the Agricultural Terracing at Caracol, Belize

2016 ◽  
Vol 4 (3) ◽  
pp. 357-370 ◽  
Author(s):  
Adrian S.Z. Chase ◽  
John Weishampel
Keyword(s):  
Soil Erosion ◽  
Large Scale ◽  
Management Practices ◽  
Landscape Management ◽  
Ancient Maya ◽  
Rainfall Runoff ◽  
Agricultural Terraces ◽  
Gravitational Flow ◽  
Airborne Laser ◽  
Maya Agriculture

AbstractIn April 2009, a lidar survey flown by the National Center for Airborne Laser Mapping recorded 200 square kilometers of terrain that comprised the Classic Period Maya city of Caracol, Belize. The data revealed a highly manipulated landscape of dense settlement, agricultural terraces, and residential reservoirs. Literature on Maya agriculture has discussed the benefits of terraces in controlling soil erosion, retaining water, and managing the gravitational flow of water; however, until now these benefits have not been quantified or demonstrated on the ground at scale. This research utilizes these lidar data and data derivatives in order to test the degree to which the ancient Maya manipulated their environment and were able to support large-scale populations through their landscape management practices. As such, the research provides evidence supporting the significance of agricultural terraces and their impact on limiting soil erosion, increasing water retention, and permitting flow control over rainfall runoff. This research also highlights the conscious effort by the ancient Maya to manage the hydrology of their terraced landscape.

scholarly journals Stream Suspended Mud as an Indicator of Post-Mining Landform Stability in Tropical Northern Australia

Water ◽  
2021 ◽  
Vol 13 (22) ◽  
pp. 3172
Author(s):  
Devika Nair ◽  
K. G. Evans ◽  
Sean Bellairs ◽  
M. R. Narayan
Keyword(s):  
Suspended Sediment ◽  
Large Scale ◽  
Substrate Material ◽  
Monitoring Site ◽  
Wave Loads ◽  
Rainfall Runoff ◽  
Upstream Site ◽  
Stream Monitoring ◽  
Large Scale Disturbance ◽  
Fine Suspended Sediment

Mining can cause environmental disturbances and thus mined lands must be managed properly to avoid detrimental impacts in the future. They should be rehabilitated in such a way that post mining landforms behave similarly as the surrounding stable undisturbed areas. A challenge for government regulators and mine operators is setting closure criteria for assessment of the stability of the elevated post-mining landforms. Stability of a landform is often measured by the number and incision depth of gullies. This can assess mass stability and bulk movement of coarse material. However, there is a need for a more sensitive approach to assess catchment disturbances using the concept of waves of fine suspended sediment and thus determine the dynamics of recovery of a post mining landform. A more environmentally meaningful approach would be to assess the fine suspended sediment (FSS, silt + clay (0.45 µm < diameter < 63 µm)) leaving the system and entering downstream waterways. We propose assessing stability through relationships between rainfall event loads of FSS and event discharge (Q) in receiving streams. This study used an innovative approach where, instead of using instantaneous FSS concentration, it used total FSS load in waves of sediment driven through the system by rainfall runoff events. High resolution stream monitoring data from 2004 to 2015 in Gulungul and Magela Creeks, Northern Territory, Australia, were used to develop a relationship between sediment wave and event discharge, ∑FSS α f(Q). These creeks are adjacent to and receive runoff from Ranger Mine. In 2008, a 10 ha elevated waste rock landform was constructed and instrumented in the Gulungul Creek catchment. The earthworks required to build the landform created a considerable disturbance in the catchment, making a large volume of disturbed soil and substrate material available for erosion. Between 2008 and 2010, in the first two wet seasons immediately after construction, the downstream monitoring site on Gulungul Creek showed elevated FSS wave loads relative to discharge, compared with the upstream site. From 2010 onwards, the FSS loads relative to Q were no longer elevated. This was due to the establishment of vegetation on the site and loose fine sediment being trapped by vegetation. Large scale disturbance associated with mining and rehabilitation of elevated landforms causes elevated FSS loads in receiving streams. The predicted FSS loads for the stream as per the relationships between FSS and event discharge may not show a 1:1 relation with the observed loads for respective gauging stations. When downstream monitoring shows that FSS wave loads relative to rainfall runoff event discharge reduce back to pre-construction catchment levels, it will indicate that the landform is approaching equilibrium. This approach to assess landform stability will increase the sensitivity of assessing post-mining landform recovery and assist rehabilitation engineers to heal the land and benefit owners of the land to whom it is bestowed after rehabilitation.

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