{"product_id":"modflow-ground-water-model-united-states-geological-survey-usgs-9781249182276","title":"MODFLOW Ground-Water Model: User Guide to the Subsidence and Aquifer-System Compaction Package (SUB-WT) for Water-Table Aquifers","description":"A new computer program was developed to simulate vertical compaction in models of regional ground-water flow. The program simulates ground-water storage changes and compaction in discontinuous interbeds or in extensive confining units, accounting for stress-dependent changes in storage properties. The new program is a package for MODFLOW, the U.S. Geological Survey modular finite-difference ground-water flow model. Several features of the program make it useful for application in shallow, unconfined flow systems. Geostatic stress can be treated as a function of water-table elevation, and compaction is a function of computed changes in effective stress at the bottom of a model layer. Thickness of compressible sediments in an unconfined model layer can vary in proportion to saturated thickness.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e United States Geological Survey (Usgs)\u003cbr\u003e\u003cb\u003eISBN-10:\u003c\/b\u003e 1249182271\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9781249182276\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Bibliogov\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 07\/21\/2012\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 56\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 0.26lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 9.69h x 7.44w x 0.12d","brand":"United States Geological Survey (Usgs)","offers":[{"title":"Paperback","offer_id":48449335230719,"sku":"9781249182276","price":17.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/2982\/9887\/files\/img_9e253573-830e-49c2-97fa-99690485ca77.jpg?v=1777262924","url":"https:\/\/www.whiterainbookhouse.com\/products\/modflow-ground-water-model-united-states-geological-survey-usgs-9781249182276","provider":"WR Book House","version":"1.0","type":"link"}