{"id":93,"date":"2019-11-27T15:29:42","date_gmt":"2019-11-27T15:29:42","guid":{"rendered":"http:\/\/aquifer.geology.buffalo.edu\/?p=93"},"modified":"2019-11-28T02:58:48","modified_gmt":"2019-11-28T02:58:48","slug":"effective-hydraulic-conductivity-the-basics","status":"publish","type":"post","link":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/2019\/11\/27\/effective-hydraulic-conductivity-the-basics\/","title":{"rendered":"Effective Hydraulic Conductivity: The basics"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

Objectives: Determine the effective hydraulic conductivity\nof a heterogeneous aquifer in the horizonal and vertical directions. <\/p>\n\n\n\n

1. When aquifers are heterogenous there is a simplification\nthat can sometimes be made in order to calculate a bulk or effective hydraulic\nconductivity across the whole aquifer. \nThis assumption only works if water is flowing parallel or perpendicular\nto the bedding planes (see figure below). \nWhen these conditions are met, it is possible to then calculate an\neffective hydraulic conductivity where the hydraulic conductivity of an\nindividual layer is weighted based on the layer thickness.  Then each of the products of layers and\nthickness are summed. The equations used to calculate this effective hydraulic\nconductivity are given below.  Using the\nfoldable aquifer model address the following problems.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

For groundwater flow parallel to\nthe bedding plane.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Where <\/p>\n\n\n\n

                Kxi<\/sub>\nis the hydraulic conductivity of a layer i in the x direction<\/p>\n\n\n\n

                di<\/sub>\nis the thickness of layer i<\/p>\n\n\n\n

For groundwater flow perpendicular\nto the bedding plane.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Where <\/p>\n\n\n\n

                Kxi<\/sub>\nis the hydraulic conductivity of a layer i in the z direction<\/p>\n\n\n\n

                di<\/sub>\nis the thickness of layer i<\/p>\n\n\n\n

A. Determine effective hydraulic conductivity for horizontal\nflow in aquifers A, B, and C.  <\/p>\n\n\n\n

B.  Determine\neffective hydraulic conductivity for vertical flow in aquifers A, B, and C. <\/p>\n\n\n\n

C.  Explain why the\neffective hydraulic conductivity is different when flow is in the horizontal\ndirections as compared to when flow is in the vertical direction.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
Foldable Aquifer Model<\/a>Download<\/a><\/div>\n\n\n\n
\"Creative<\/a><\/figure>\n\n\n\n


This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Objectives: Determine the effective hydraulic conductivity of a heterogeneous aquifer in the horizonal and vertical directions. 1. When aquifers are heterogenous there is a simplification that can sometimes be made in order to calculate a bulk or effective hydraulic conductivity across the whole aquifer.  This assumption only works if water is flowing parallel or perpendicular … <\/p>\n

Continue reading “Effective Hydraulic Conductivity: The basics”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"class_list":["post-93","post","type-post","status-publish","format-standard","hentry","category-hydraulic-conductivity"],"_links":{"self":[{"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/posts\/93","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/comments?post=93"}],"version-history":[{"count":5,"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/posts\/93\/revisions"}],"predecessor-version":[{"id":278,"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/posts\/93\/revisions\/278"}],"wp:attachment":[{"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/media?parent=93"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/categories?post=93"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/tags?post=93"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}