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First posted October 30, 2024 For additional information, contact: Director, California Water Science Center U.S. Geological Survey 6000 J Street, Placer Hall Sacramento, California 95819 Sediment from the Central Valley via the Sacramento-San Joaquin Delta (Delta) and Suisun Bay is a primary source of sand to San Francisco Bay, California. Sand is mined from San Francisco Bay for commercial purposes, such as for use in concrete for construction.
Links More information: Publisher Index Page (via DOI) Download citation as: RIS | Dublin Core Publication type Article Publication Subtype Journal Article Title Ambient flow and transport in long-screened, sand-packed wells: Insights into cross contamination and wellbore flow Series title Environmental Earth Sciences DOI 10.1007/s12665-024-11828-3 Volume 83 Year Published 2024 Language English Publisher Springer Contributing office(s) California Water Science Center, New England Water...
In summer 1876, Peter Kropotkin was given a pocket watch by a visiting relative. He was 33 years old, bore one of the Russian Empire’s oldest princely titles and had been a page de chambre to Tsar Alexander II. He was already famous in Russia for his scientific work on zoology and glaciation. Two years earlier, however, he had been arrested and imprisoned as a member of a revolutionary secret society.
History is not just the facts about the past. It is, as E.H. Carr put it, “an unending dialogue between the past and the present.” I was reminded of this phrase recently when the publication of my book on Russian populism coincided almost exactly with Russia’s invasion of Ukraine. All of a sudden this book, which had been written during the luxury of a time when calm reassessment of the past was possible, began to look like a rather different creature.
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