Relationship between hydrological indices and physiography factors

Relationship between hydrological indices and physiography factors | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Case Report Relationship between hydrological indices and physiography factors Kaveh Ostad Ali Askari This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-5710793/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract This study is aimed to reach suitable regionalized models in which hydrological indices are deemed as dependent variables and physiographic features of various stations are independent variables. These variables are taken as inputs of multiple regression models. Results have shown that area is the factor affecting amplitude. Duration: area is the factor affecting D1, D4, D5, D6 and D11. Length of water stream is the factor affecting D2, D3, D4, D5, D6, and D11. Pure slope is the factor affecting D10 while Gravelius coefficient affects D11. Variability: Gravelius coefficient is the factor affecting V1, V5 and V6. Timing: area is the factor affecting T. Physiographic features and climate of different regions vary from one region to another. Form of the equations is not the same for all the selected regions. Therefore, it is likely that one variable very effective in one region does not enter the equation in another region. It may lead to necessity of further research on each region. Area which is almost the main factor affecting river flows in all researches conducted in Iran and other parts of the world, is of the highest role in Iranian studies. Drought is one of the most important natural events which are strongly interwoven with climate changes. Reversible events in arid or semi-arid resulted from deficient rainfall during a specific period of time may affect a vast part of lands. Determination of factors affecting hydrological droughts and study on the relationship among variables can be deemed as the most useful alternatives to deal with damages of droughts. The current study is aimed at introducing the most significant hydrological indices in order to analyze downstream of the under-study region and its relationship to 10 physiography factors. It is concluded that area used in the majority of researches conducted in Iran or other parts of the world is deemed as a significantly affective factor at least for river flows. Hydrology River Flows Downstream Climate Changes Rainfall Semi-Arid Hydrological Drought Multivariate Regression Hydrological Index Physiographical Factors Full Text Additional Declarations The authors declare no competing interests. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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