scholarly journals THE CONTRIBUTION OF THE MORPHOMETRIC PARAMETERS OF AN HYDROGRAPHIC NETWORK TO THE INVESTIGATION OF THE NEOTECTONIC ACTIVITY: AN APPLICATION TO THE UPPER ACHELOOS RIVER.

2018 ◽  
Vol 36 (2) ◽  
pp. 1084 ◽  
Author(s):  
E. Lykoudi ◽  
M. Angelaki
Keyword(s):  
Drainage System ◽  
Morphometric Parameters ◽  
Drainage Network ◽  
Southwestern Part ◽  
Neotectonic Activity ◽  
The Relationship ◽  
Acheloos River ◽  
Hydrographic Network

In this paper the relationship between the morphometric parameters of a drainage system and the neotectonic activity is investigated. The hydrographie network of the Upper Acheloos River was chosen as the study area. The whole network and especially its western-southwestern part appears to be in the rejuvenated stage of evolution, as it is concluded by the analysis of the parameters, associated with the shape and slope of the basins, and the slope of the respective streams. Furthermore, the shape of the drainage network and the structure of the basins suggest that not only the Alpine orogenesis but also the neotectonic activity controls the morphogenetic processes in the area

scholarly journals Γεωμορφολογική και μορφοτεκτονική ανάλυση της λεκάνης απορροής του Μαλακασιώτικου ρέματος (Δυτ. Θεσσαλία-νομός Τρικάλων).

2005 ◽  
Vol 38 ◽  
pp. 123
Author(s):  
Γ. ΜΠΑΘΡΕΛΛΟΣ ◽  
Χ. ΣΚΥΛΟΔΗΜΟΥ ◽  
Γ. ΛΕΙΒΑΔΙΤΗΣ ◽  
Ε. ΒΕΡΥΚΙΟΥ- ΠΑΠΑΣΠΥΡΙΔΑΚΟΥ
Keyword(s):  
Quantitative Analysis ◽  
Drainage Basin ◽  
Northwestern Part ◽  
Drainage Network ◽  
Tectonic Structure ◽  
Neotectonic Activity ◽  
Pinios River ◽  
The Relationship

The Malakasiotiko stream is one of the tributaries of Pinios River in Western Thessaly. The drainage basin of Malakasiotiko stream is located in the northwestern part of the mountainous zone of Trikala Prefecture. In this paper, the drainage network of Malakasiotiko stream has been analyzed. Additionally, the relationship among the tectonism, the growth directions of the watershed lines, and the drainage network. The quantitative analysis of the drainage network has resulted that the geological and tectonic structure of the area affected, and potentially has been affecting its development. The morphotectonic analysis has shown that the watershed lines of the drainage basin and the streams of 1st to 4th order are influenced by alpine structure, whereas the 5th, 6th and the 7th order streams are influenced by neotectonic activity.

Interaction between water pressure in the basal drainage system and discharge from an Alpine glacier before and during a rainfall-induced subglacial hydrological event

1997 ◽  
Vol 24 ◽  
pp. 288-292 ◽  
Author(s):  
Andrew P. Barrett ◽  
David N. Collins
Keyword(s):  
Water Level ◽  
Water Pressure ◽  
Drainage System ◽  
Water Levels ◽  
Drainage Network ◽  
Alpine Glacier ◽  
Hydraulic Conditions ◽  
Borehole Water ◽  
Progressive Growth ◽  
Resultant Increase

Combined measurements of meltwater discharge from the portal and of water level in a borehole drilled to the bed of Findelengletscher, Switzerland, were obtained during the later part of the 1993 ablation season. A severe storm, lasting from 22 through 24 September, produced at least 130 mm of precipitation over the glacier, largely as rain. The combined hydrological records indicate periods during which the basal drainage system became constricted and water storage in the glacier increased, as well as phases of channel growth. During the storm, water pressure generally increased as water backed up in the drainage network. Abrupt, temporary falls in borehole water level were accompanied by pulses in portal discharge. On 24 September, whilst borehole water level continued to rise, water started to escape under pressure with a resultant increase in discharge. As the drainage network expanded, a large amount of debris was flushed from a wide area of the bed. Progressive growth in channel capacity as discharge increased enabled stored water to drain and borehole water level to fall rapidly. Possible relationships between observed borehole water levels and water pressures in subglacial channels are influenced by hydraulic conditions at the base of the hole, distance between the hole and a channel, and the nature of the substrate.

scholarly journals Approaches to Visibility and Strategical Control of the Sierra Harana Schematic Rock Art (Granada, Spain)

2021 ◽  
Vol 31 ◽  
pp. 27-44
Author(s):  
Marcos Fernández Ruiz ◽  
Fernando Corbacho Gadella ◽  
Liliana Spanedda ◽  
Alberto Dorado Alejos
Keyword(s):  
Information Systems ◽  
Geographic Information Systems ◽  
Rock Art ◽  
Geographic Information ◽  
Neolithic Period ◽  
Strong Link ◽  
Water Springs ◽  
The Relationship ◽  
Hydrographic Network ◽  
Rock Shelters

An approach about territorial control and mobility in Sierra Harana (Granada, Spain) during Late Prehistory is presented in this paper, according to rock shelters with schematic rock art distribution. Different aspects have been analysed by using tools provided by Geographic Information Systems (GIS): the relationship between rock shelters and hydrographic network and water springs, and, mainly, their visual control. The association between rock shelters with schematic rock art and burial caves use during the Neolithic period is observed in the study area. A strong link between rock shelters and traditional pathways is also attested. These facts can be read as a way to mark symbolically certain routes that could be aimed to short transhumance practice. 

Research for Combined Drainage Networks in Chuanfang River Basin of Kunming City Based on SWMM

2012 ◽  
Vol 170-173 ◽  
pp. 2380-2385
Author(s):  
Xiao Min Zhu ◽  
Bing Huang ◽  
Shu Dong Wang ◽  
Jin Long Zheng ◽  
Bo Yao ◽  
...  
Keyword(s):  
River Basin ◽  
Drainage System ◽  
Sewage Water ◽  
Management Model ◽  
Peak Time ◽  
Drainage Network ◽  
Efficiency Coefficient ◽  
Storm Water Management Model ◽  
Drainage Networks ◽  
Water Base

A model for simulating combined drainage networks in Chuangfang river basin of Kunming City based on the Storm Water Management Model was established. The type and period of using water base on residential area, marketplace, school area, and guesthouse area Kunming city were introduced into the model, and their infection for drainage system was research. The results show that simulation results of two outlets flow have coherence with monitoring data based two typical rainfall in Kunming, the Nash-Sutcliffe efficiency coefficient is 0.71-0.82. And the model can be using analyze ‘bottleneck’ nodes and restricting conduits, simulating the running status of drainage network of combined drainage at raining and draining peak time of sewage water. The research provide strong technical support for rebuild drainage network in Kunming or other city.

Interaction between water pressure in the basal drainage system and discharge from an Alpine glacier before and during a rainfall-induced subglacial hydrological event

1997 ◽  
Vol 24 ◽  
pp. 288-292 ◽  
Author(s):  
Andrew P. Barrett ◽  
David N. Collins
Keyword(s):  
Water Level ◽  
Water Pressure ◽  
Drainage System ◽  
Water Levels ◽  
Drainage Network ◽  
Alpine Glacier ◽  
Hydraulic Conditions ◽  
Borehole Water ◽  
Progressive Growth ◽  
Resultant Increase

Combined measurements of meltwater discharge from the portal and of water level in a borehole drilled to the bed of Findelengletscher, Switzerland, were obtained during the later part of the 1993 ablation season. A severe storm, lasting from 22 through 24 September, produced at least 130 mm of precipitation over the glacier, largely as rain. The combined hydrological records indicate periods during which the basal drainage system became constricted and water storage in the glacier increased, as well as phases of channel growth. During the storm, water pressure generally increased as water backed up in the drainage network. Abrupt, temporary falls in borehole water level were accompanied by pulses in portal discharge. On 24 September, whilst borehole water level continued to rise, water started to escape under pressure with a resultant increase in discharge. As the drainage network expanded, a large amount of debris was flushed from a wide area of the bed. Progressive growth in channel capacity as discharge increased enabled stored water to drain and borehole water level to fall rapidly. Possible relationships between observed borehole water levels and water pressures in subglacial channels are influenced by hydraulic conditions at the base of the hole, distance between the hole and a channel, and the nature of the substrate.

Research on Red Sandstone Area Expressway Subgrade Drainage System Design

2014 ◽  
Vol 505-506 ◽  
pp. 49-52
Author(s):  
Hua Zhao ◽  
Mao Jin Lei ◽  
Shui Gen Peng
Keyword(s):  
Drainage System ◽  
Design Parameters ◽  
Jiangxi Province ◽  
Longitudinal Gradient ◽  
Design Elements ◽  
Red Sandstone ◽  
Structure Damage ◽  
Drainage Design ◽  
Current Specification ◽  
The Relationship

Aimed at the feature of expressway subgrade drainage facilities in typical red sandstone areas in Jiangxi province and based on the importance of the structure, damage conditions, service requirements and the current specification requirements related to various types of ditches, the designed repetition period of rainfall and proposed safety depth values for drainage facilities were put forward by considering reasonably the key design parameters to regional drainage facilities. The relationship between prerequisite of discharging sediment in ditches or conduits and minimum longitudinal gradient was discussed. Combined with the characteristics of red sandstone subgrade drainage with high requirements, the design elements of red sandstone area expressway subgrade drainage system were obtained, which can provide beneficial references for the subgrade drainage design in red sandstone areas.

scholarly journals Compensatory alternatives for flooding control in urban areas with tidal influence in Recife - PE

RBRH ◽  
2017 ◽  
Vol 22 (0) ◽  
Author(s):  
Marcos Antonio Barbosa da Silva Junior ◽  
◽  
Simone Rosa da Silva ◽  
Jaime Joaquim da Silva Pereira Cabral ◽  
Keyword(s):  
Urban Areas ◽  
Drainage System ◽  
Infiltration Rate ◽  
Urban Drainage ◽  
Drainage Network ◽  
Storm Water Management Model ◽  
Recurrence Period ◽  
Detention Tank ◽  
Swmm Model ◽  
Two Alternatives

ABSTRACT This paper presents a study of compensatory alternatives in urban drainage, using SWMM model (Storm Water Management Model), for the critical point of flooding in an urban area and vulnerable to tide fluctuations, located in Recife. For this, we used the registered information of the micro-drainage network and defined the parameters and variables required for modeling, such as: the subareas of contribution to the drainage system, indicating the percentage of soil waterproofing, equivalent width, slope, and infiltration rate; project rain; and tide curve. Two alternatives were simulated after the model has been calibrated. The first, which is an adaptation of the drainage network, presented maximum reductions in the volume of flooding of 37% for the events with recurrence period of two years and of 58% for five years of recurrence. The second, based on the deployment of a detention tank in the existing network, presented satisfactory results for the event of two years and reduced approximately 38% for events of five years. The results showed that there was a reduction in the area of flooding for the conditions simulated. However, the first alternative would not solve the local flooding problems, it would only attenuate and would increase the overload of the drainage pipes downstream of the modified system, while the second alternative could solve the problem of flooding, with the occurrence of an event of two years.

An integrated assessment of drainage system reconstruction based on a drainage network model

2019 ◽  
Vol 26 (26) ◽  
pp. 26563-26576 ◽  
Author(s):  
Zhenliang Liao ◽  
Xianyong Gu ◽  
Jiaqiang Xie ◽  
Xin Wang ◽  
Juxiang Chen
Keyword(s):  
Network Model ◽  
Integrated Assessment ◽  
Drainage System ◽  
Drainage Network ◽  
System Reconstruction

scholarly journals Flood Mitigation Techniques—A New Perspective for the Case Study of Adayar Watershed

2017 ◽  
Author(s):  
Vidyapriya V. ◽  
Ramalingam M.
Keyword(s):  
Drainage System ◽  
Flood Mitigation ◽  
Storm Water ◽  
Mitigation Measures ◽  
Complex Nature ◽  
Adjacent Area ◽  
Drainage Network ◽  
Flood Events ◽  
Water Drainage ◽  
Impervious Area

Mostly populous city like Chennai is subjected to frequent flooding due to its complex nature of natural and man-made activities. From the analysis of the past records of flood events of 1943,1976,1985,2005 and 2008,it has been observed Adayar watershed is subjected to cataclysmic flooding in low-lying areas of the city and its suburbs because of inoperativeness of the local drainage system, rainfall associated with cyclonic activity, topography of the terrain, encroachments along the floodplain, hugh upstream flow discharge into the river and the highly impervious area which blocked the runoff to flow into the storm water drainage. After looking into these problems of flooding, a study have been conducted on Adayar watershed to develop a 2D hydrodynamic model for the two scenarios of existing condition of storm water drainage network and revised conditions of storm water drainage network using high resolution Lidar DEM to assess the volume of runoff with respect to time and duration on flood peaks for the two flood events of 2005 and 2015.Secondly to develop a 1D flood model to predict the river stages during peak floods using MIKE 11 for the Adayar watershed. Thirdly to integrate the coupled 1D and 2D model using MIKEFLOOD for assessing the extent of inundation in the floodplain area of Adayar river. Finally results from the integrated model have been validated and the results found satisfactory. As a part of mitigation measures, two flood mitigation measures have been adopted. One measure such as revised storm water drainage system which enhances the flood carrying capacity of the drains and results in less inundated area which solves the problem of urban flooding and second measure such as regrading the river bed which reduces the floodplain inundation around the adjacent area of the river. After adopting these measures, the river is free to flow into the sea without any blockades.

scholarly journals HUBUNGAN ANTARA SEDIMEN DENGAN LOGAM BERAT DAN MAKROZOOBENTOS DI SUNGAI SIANGKER, SEMARANG

2016 ◽  
Vol 5 (4) ◽  
pp. 337-344
Author(s):  
Arini Indah Lestari ◽  
Mustofa Niti Supardjo ◽  
Boedi Hendrarto
Keyword(s):  
Heavy Metals ◽  
Principle Component Analysis ◽  
Random Sampling ◽  
Pearson Correlation ◽  
Drainage System ◽  
Component Analysis ◽  
Sediment Characteristics ◽  
The West ◽  
Principle Component ◽  
The Relationship

ABSTRAK Sungai Siangker merupakan salah satu sub sistem dari sistem drainase Semarang Barat yang mengalami pendangkalan.Limbah yang berasal dari pabrik diduga mengandung logam berat Pb dan Cd. Oleh karena itu, penelitian ini diadakan untuk mengetahui kadar logam berat Pb dan Cd dan hubungan antara sedimen serta kandungan logam berat Pb dan Cd dengan komunitas makrozoobentos. Pengambilan sampel dilakukan secara random  sampling. PCA (Principle Component Analysis) digunakan untuk mengetahui kedekatan hubungan antara makrozoobentos, nilai bahan organik dan karakteristik sedimen.Perbedaan variabel tiap stasiunnya diuji dengan Uji Kruskal-Wallis. Korelasi Pearson digunakan untuk menganalisis hubungan antara variabel kelimpahan, keanekaragaman, kadar logam berat dan karakteristik sedimen di tiap stasiunnya. Hasil rerata yang diperoleh dari analisa kadar logam berat (Pb) di muara dan sungai Siangker adalah 1,10 – 1,64 mg/l,  sedangkan untuk rerata (Cd) sebesar 0,13 – 0,43 mg/l. Kadar debu mempunyai korelasi positif yang erat (p < 0,05) dengan keanekaragaman dan kelimpahan makrozoobentos. Kadar logam berat berpengaruh nyata (p < 0,05) terhadap keanekaragaman maupun kelimpahan makrozoobentos. Kata Kunci : Sungai, logam berat, karakteristik sedimen, makrozoobentos  ABSTRACTSiangker river is one of the sub-systems of the West Semarang drainage system that experiencing siltation. Waste from the factories is suspected to contain heavy metals (Pb) and (Cd). This study was conducted to understand concentration of Pb and Cd and the relationship between characteristics of the sediments containing heavy metals (Pb) and (Cd) as well as macrozoobenthos community. Sampling was done by random sampling. PCA (Principle Component Analysis) was used to determine proximity of the relationships between macrozoobenthos and the value of organic matter as well as sediment characteristics. Meanwhile, the differences in the station of each variable was tested using Kruskal-Wallis test. Pearson correlation was used to analyze the relationship between abundance variables, diversity, the levels of heavy metals and sediment characteristics in each station. The results showed that the levels of heavy metals (Pb) in the estuary and  river Siangker were  1,10 to 1,64 mg / l, while concentration of  (Cd) is 0,13 to 0,43 mg / l. Dust levels were closely positively correlated (p < 0,05) with the diversity and abundance of macrozoobenthos. Levels of heavy metals was significant (p < 0,05) for the diversity and abundance of macrozoobenthos.     Keywords : River, heavy metal, sediment characteristic, macrozoobenthos

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