Geomorphology Articles
-
New Download – Soil Geomorphology: A Pedological Guide to Soil Moisture Sensors
Developed by B. K. Bellingham, Soil Scientist at Stevens, this is an excellent resource for anyone installing soil moisture sensors and interpreting soil moisture data. Here’s what’s inside: Soil Geomorphology and Properties Soil Development Soil Texture and Components Soil Horizons Soil Orders and Taxonomy Soil pH Soil Bulk Density Shrink/Swell Clays Soil ...
-
How to Create a Hydrological Map Portal
Hydrology databases make it possible to map, track and observe water resources. Monitoring and modelling the data is essential in creating a sustainable system for managing the public water supply. Having to find and track down needed information manually is inefficient and unreliable, especially when taking into consideration that all assessments and analyses are made with geospatial data ...
-
Joint operation of M40 USV +3D Side scan sonar+ MS400 multibeam sounding system - Case Study
Location: The dangerous section of Longwan bridge in Foshan city and the harbors of Taishan power station in Tangshan bay, Taishan city Date: April 25-28, 2018 Instrument: Oceanalpha M40 multi-purpose unmanned boat Beijing Anderson Changchun 3DSS-DX-450 3D side scan sonar Beijing Zhuhai Putonghua MS-400 multibeam sounding system User: Guangdong Banting Survey Technology Co., Ltd. ...
-
The Stevens soil resource guide
We’re happy to announce the publication of our Soil Resource Guide. Written by the soil experts at Stevens, it contains a wealth of information and will benefit anyone involved with soil. Whether you’re a soil scientist, a farmer or a soil researcher, this 52 page book is a fantastic reference and source of up-to-date theories, practices and advice. The guide will make ...
-
Improving capability of conceptual modeling of watershed rainfall–runoff using hybrid wavelet-extreme learning machine approach
Rainfall–runoff process identification, due to uncertainties and complexities, requires advanced modeling strategies. For this end, this study presented different strategies to explore spatio-temporal variation of rainfall–runoff process for the Ajichay watershed located in northwest Iran. Extreme learning machine (ELM) was used to predict the runoff in conceptual models. First, a ...
-
Daily runoff prediction using the linear and non-linear models
Runoff prediction, as a nonlinear and complex process, is essential for designing canals, water management and planning, flood control and predicting soil erosion. There are a number of techniques for runoff prediction based on the hydro-meteorological and geomorphological variables. In recent years, several soft computing techniques have been developed to predict runoff. There are some ...
-
Soil Geomorphology and Identification
When working with or studying the soil, it’s important to know what type of soil is being examined. Each type of soil has different characteristics, and will have different effects on water infiltration rates, water holding capacity, evapotranspiration rate, and other soil characteristics. Soil sensors are one popular way of measuring soil moisture, salinity, temperature level, ...
-
Stevens HydraProbe helps in landslide research - Case Study
Each year during the wet season we hear news reports about landslides in America and abroad. Sometimes these events happen in unpopulated areas but unfortunately they also occur in areas where people live, causing property damage and taking lives. But what causes these events and what can be done about them? That’s what Dr. Burns, a geology professor at Portland State University is trying ...
-
Comparison of West Balkan adult trout habitat predictions using a Pseudo-2D and a 2D hydrodynamic model
Hydraulic-habitat models combine the dynamic behavior of river discharge with geomorphological and ecological responses. In this study, they are used for estimating environmental flow requirements. We applied a Pseudo-two-dimensional (2D) model based on the one-dimensional (1D) HEC-RAS model and an in-house 2D (FLOW-R2D) hydrodynamic model to a section of river for several flows in respect of ...
-
Three-phase approach to improve deep groundwater supply availability in the Elidar district of Afar region of Ethiopia
This study provides new evidence on the effectiveness of a combined remote sensing and hydrogeological investigation method for deep groundwater development in complex geologic and geomorphologic situations in Ethiopia. The study was undertaken in the Elidar district of the Afar region of Northern Ethiopia. Due to the water availability and vegetation in this district, the majority of the ...
-
The SediMeter turns 30 years, but where did it come from?
A hundred years ago Physical Geography concerned itself with the description of landforms and processes, and deductions about how these processes had led to those landscapes. Then in the 1930’s a research student in Uppsala called Filip Hjulström crossed the river called Fyrisån every day on his way to the department. He stopped, took a water sample and measured the water level. ...
-
What is the primary factor controlling trend of Glacier No. 1 runoff in the Tianshan Mountains: temperature or precipitation change?
The internal relationship between summer temperature (ST), annual precipitation (AP), annual mass balance (AM) and annual runoff (AR) of Glacier No.1 from 1959 to 2006, a so-called ‘summer accumulation type’ glacier, was examined with several statistical methods including simple linear regression, the Mann–Kendall test and wavelet analysis. In total, ST, AP and AR increase with a rate of 0.02 ...
-
Spatial and temporal variability of nitrogen load from catchment and retention along a river network: a case study in the upper Xin'anjiang catchment of China
Understanding the spatial and temporal variability of nitrogen load and characteristics of retention along a river network is important for land management and water resources protection. This study employs a geomorphology-based non-point source pollution model (GBNP) to simulate the hillslope hydrological processes and transport of sediment and pollutants in the upper Xin'anjiang (XAJ) ...
-
Editorial: Hydrogeomorphology – a long-term scientific interface
Hydrogeomorphology is reframed as an old inter-discipline, which is still highly relevant to both hydrology and geomorphology, renewed by new techniques and new questions in line with challenges of ungauged basins; anthropogenic changes in driving forces, landscape structures, and dynamic functions; translation of science into practice; and retrospective and prospective analyses. The corpus and ...
-
Streamflow prediction in ungauged basins through geomorphology-based hydrograph transposition
Geomorphology-based rainfall–runoff models are particularly helpful for predicting hydrology in ungauged basins. The robustness, generality and flexibility of the modelling approach make it able to deal with a wide variety of processes, events and scales. It allows a rainfall–runoff transfer function to be estimated for any basin without needing to measure discharge. The aim of ...
-
A minimalist model of terminal lakes: Qinghai Lake (China) and Lake Chad (N Africa)
The ratio of the areas of a terminal lake to its total basin provides a geomorphological measure, which characterises the geobotanical state of water limited climates. A minimalist model of this lake area ratio is introduced combining the water balances of lake and land, the Budyko–Schreiber rainfall–runoff chain over land and, as a closure, the land and lake potential evaporation ...
-
Regional low flow analysis in Sefidrood Drainage Basin, Iran using principal component regression
Knowledge of low streamflow statistics is necessary for effective water management in regions prone to extreme hydrologic events such as Iran. This study employs a data set of 23 river flow time series from Sefidrood Drainage Basin, Iran, to examine regional hydrological drought based on the low flow index 7Q10. Hierarchical agglomerative cluster analysis was used to divide the 23 gauging ...
-
Two-dimensional numerical modeling of wood transport
The transport of wood material in rivers has been the subject of various studies in recent years. Most research has focused on the ecological and geomorphologic role of wood, its recruitment processes and spatial distribution in streams. In this study, we focused on wood transport dynamics, and we have developed a numerical model to simulate wood transport coupled with a two-dimensional (2D) ...
-
Evaluation of groundwater potential zones using GIS and remote sensing in Noyyal Basin, Tamil Nadu, India
Groundwater is a dynamic and replenishable natural resource but in hard rock terrain the availability of groundwater is of limited extent. The occurrence and movement of groundwater in an area is governed by several factors. It is therefore, necessary to integrate several factors on these terrain characteristics. This can be best achieved by geographical information system (GIS). River Noyyal ...
-
Impacts of urbanization on river system structure: a case study on Qinhuai River Basin, Yangtze River Delta
Stream structure is usually dominated by various human activities over a short term. An analysis of variation in stream structure from 1979 to 2009 in the Qinhuai River Basin, China, was performed based on remote sensing images and topographic maps by using ArcGIS. A series of river parameters derived from river geomorphology are listed to describe the status of river structure in the past and ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you