{"id":1542,"date":"2026-05-13T02:55:17","date_gmt":"2026-05-13T02:55:17","guid":{"rendered":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/?post_type=part&p=1542"},"modified":"2026-05-13T02:55:17","modified_gmt":"2026-05-13T02:55:17","slug":"modifications-to-original-release","status":"publish","type":"part","link":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/part\/modifications-to-original-release\/","title":{"raw":"Modifications to Original Release","rendered":"Modifications to Original Release"},"content":{"raw":"
\r\n\r\nChanges from the Original Version to Version 2<\/u><\/strong>\r\n\r\n<\/div>\r\n
\r\n\r\nOriginal Version: January 13, 2025, Version 2: January 19, 2025\r\n\r\n<\/div>\r\n
\r\n\r\nGeneral: updated the Table of contents to include this modification section\r\n\r\n<\/div>\r\n
\r\n\r\nPage numbers refer to the original PDF.\r\n\r\n<\/div>\r\n
\r\n\r\npage ii, added Version 2\r\n\r\n<\/div>\r\n
\r\n\r\npage 154, included 2nd term in the 1D solute transport equation that is needed in some cases to accommodate low Peclet numbers\r\n\r\n<\/div>\r\n
\r\n\r\npage 154, changed \u201cThe full version of this equation\u201d to \u201cThis equation\u201d because the full version is now included in this book\r\n\r\n<\/div>\r\n
\r\n\r\npage 268, included 2nd term in solution of Exercise 24 which influence the calculated value of concentration at the x= 25 cm location\r\n\r\n<\/div>\r\n
\r\n\r\npage 283, now followed by page A, to include this modification section\r\n\r\n<\/div>\r\n
\r\n\r\nChanges from the Version 2 to Version 3<\/u><\/strong>\r\n\r\n<\/div>\r\n
\r\n\r\nVersion 2: January 19, 2025, Version 3: March 18, 2025\r\n\r\n<\/div>\r\n
\r\n\r\nPage numbers refer to the version 2 PDF.\r\n\r\n<\/div>\r\n
\r\n\r\npage iii, change version number and date\r\n\r\n<\/div>\r\n
\r\n\r\npage 9, Equation 2, added negative sign to Darcy\u2019s Law and a sentence at the end of the subsequent paragraph stating \u201cThe negative sign indicates that flow is in the opposite direction of the gradient.\u201d\r\n\r\n<\/div>\r\n
\r\n\r\npage 24, Equation 23, added negative sign to Darcy\u2019s Law\r\n\r\n<\/div>\r\n
\r\n\r\npage 25, Equation 24, added negative sign to Darcy\u2019s Law\r\n\r\n<\/div>\r\n
\r\n\r\npage 35, Equation 33, added negative sign to Darcy\u2019s Law\r\n\r\n<\/div>\r\n
\r\n\r\npage 39, Equation 35, added negative sign to Darcy\u2019s Law\r\n\r\n<\/div>\r\n
\r\n\r\npage 41, Equation 38, added negative sign to Darcy\u2019s Law\r\n\r\n<\/div>\r\n
\r\n\r\npage 51, Equation 44, added negative sign to Darcy\u2019s Law\r\n\r\n<\/div>\r\n
\r\n\r\npage 57, Equation 59, added negative sign to Darcy\u2019s Law\r\n\r\n<\/div>\r\n
\r\n\r\npage 118, Equation 89, added negative sign to Darcy\u2019s Law\r\n\r\n<\/div>\r\n
\r\n\r\npage 118, Equation 90, added negative sign to Ohm\u2019s Law\r\n\r\n<\/div>\r\n
\r\n\r\npage 118, Equation 90, change to continuous form to be more parallel to Equation 89\r\n\r\n<\/div>\r\n
\r\n\r\npage 145, Equation 93, added negative sign to Darcy\u2019s Law\r\n\r\n<\/div>\r\n
\r\n\r\npage 248, Solution Exercise 3, added statements indicating the direction of the gradients\r\n\r\n<\/div>\r\n
\r\n\r\npage 250, Solution Exercise 5, added statement indicating the direction of the velocity\r\n\r\n<\/div>","rendered":"
\n

Changes from the Original Version to Version 2<\/u><\/strong><\/p>\n<\/div>\n

\n

Original Version: January 13, 2025, Version 2: January 19, 2025<\/p>\n<\/div>\n

\n

General: updated the Table of contents to include this modification section<\/p>\n<\/div>\n

\n

Page numbers refer to the original PDF.<\/p>\n<\/div>\n

\n

page ii, added Version 2<\/p>\n<\/div>\n

\n

page 154, included 2nd term in the 1D solute transport equation that is needed in some cases to accommodate low Peclet numbers<\/p>\n<\/div>\n

\n

page 154, changed \u201cThe full version of this equation\u201d to \u201cThis equation\u201d because the full version is now included in this book<\/p>\n<\/div>\n

\n

page 268, included 2nd term in solution of Exercise 24 which influence the calculated value of concentration at the x= 25 cm location<\/p>\n<\/div>\n

\n

page 283, now followed by page A, to include this modification section<\/p>\n<\/div>\n

\n

Changes from the Version 2 to Version 3<\/u><\/strong><\/p>\n<\/div>\n

\n

Version 2: January 19, 2025, Version 3: March 18, 2025<\/p>\n<\/div>\n

\n

Page numbers refer to the version 2 PDF.<\/p>\n<\/div>\n

\n

page iii, change version number and date<\/p>\n<\/div>\n

\n

page 9, Equation 2, added negative sign to Darcy\u2019s Law and a sentence at the end of the subsequent paragraph stating \u201cThe negative sign indicates that flow is in the opposite direction of the gradient.\u201d<\/p>\n<\/div>\n

\n

page 24, Equation 23, added negative sign to Darcy\u2019s Law<\/p>\n<\/div>\n

\n

page 25, Equation 24, added negative sign to Darcy\u2019s Law<\/p>\n<\/div>\n

\n

page 35, Equation 33, added negative sign to Darcy\u2019s Law<\/p>\n<\/div>\n

\n

page 39, Equation 35, added negative sign to Darcy\u2019s Law<\/p>\n<\/div>\n

\n

page 41, Equation 38, added negative sign to Darcy\u2019s Law<\/p>\n<\/div>\n

\n

page 51, Equation 44, added negative sign to Darcy\u2019s Law<\/p>\n<\/div>\n

\n

page 57, Equation 59, added negative sign to Darcy\u2019s Law<\/p>\n<\/div>\n

\n

page 118, Equation 89, added negative sign to Darcy\u2019s Law<\/p>\n<\/div>\n

\n

page 118, Equation 90, added negative sign to Ohm\u2019s Law<\/p>\n<\/div>\n

\n

page 118, Equation 90, change to continuous form to be more parallel to Equation 89<\/p>\n<\/div>\n

\n

page 145, Equation 93, added negative sign to Darcy\u2019s Law<\/p>\n<\/div>\n

\n

page 248, Solution Exercise 3, added statements indicating the direction of the gradients<\/p>\n<\/div>\n

\n

page 250, Solution Exercise 5, added statement indicating the direction of the velocity<\/p>\n<\/div>\n","protected":false},"parent":0,"menu_order":26,"template":"","meta":{"pb_part_invisible":false,"pb_part_invisible_string":""},"contributor":[],"license":[],"class_list":["post-1542","part","type-part","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/wp-json\/pressbooks\/v2\/parts\/1542","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/wp-json\/pressbooks\/v2\/parts"}],"about":[{"href":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/wp-json\/wp\/v2\/types\/part"}],"version-history":[{"count":1,"href":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/wp-json\/pressbooks\/v2\/parts\/1542\/revisions"}],"predecessor-version":[{"id":1544,"href":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/wp-json\/pressbooks\/v2\/parts\/1542\/revisions\/1544"}],"wp:attachment":[{"href":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/wp-json\/wp\/v2\/media?parent=1542"}],"wp:term":[{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/wp-json\/wp\/v2\/contributor?post=1542"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/wp-json\/wp\/v2\/license?post=1542"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}