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Cooling of Tropical Brazil (5�C) During the Last Glacial Maximum
A 30,000-year paleotemperature record derived from noble gases dissolved in carbon-14-dated ground water indicates that the climate in lowland Brazil (Piaui Province, 7�S, 41.5�W; altitude, 400Expand
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Paleotemperatures in the Southwestern United States Derived from Noble Gases in Ground Water
A paleotemperature record based on measurements of atmospheric noble gases dissolved in ground water of the Carrizo aquifer (Texas) shows that the annual mean temperature in the southwestern UnitedExpand
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A paleotemperature record derived from dissolved noble gases in groundwater of the Aquia Aquifer (Maryland, USA)
Low 14C activities in groundwater of the confined part of the Aquia aquifer in southeastern Maryland suggest that most of this water infiltrated at least 30,000 years ago. However, radiocarbonExpand
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Gas exchange rates in the tidal Hudson river using a dual tracer technique
Gas exchange rates have been determined in the tidal Hudson River by injecting 2 inert gases, 3 He and sulfur hexafluoride (SF 6 ) and monitoring their decline with time. Their distributions alongExpand
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Quantifying groundwater discharge to Cockburn River, southeastern Australia, using dissolved gas tracers 222Rn and SF6
Groundwater discharge to the Cockburn River, southeast Australia, has been estimated from comparison of natural 222Rn activities in groundwater and river water, interpreted using a numerical flowExpand
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A 30,000 yr Continental Paleotemperature Record Derived from Noble Gases Dissolved in Groundwater from the San Juan Basin, New Mexico
Abstract Paleotemperatures for the last glacial maximum (LGM) have been derived from noble gases dissolved in 14C-dated groundwater of the Ojo Alamo and the Nacimiento formations in the San JuanExpand
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Implications of projected climate change for groundwater recharge in the western United States
Summary Existing studies on the impacts of climate change on groundwater recharge are either global or basin/location-specific. The global studies lack the specificity to inform decision making,Expand
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The Spatial Scales, Distribution, and Intensity of Natural Marine Hydrocarbon Seeps near Coal Oil Point, California
Natural hydrocarbon seepage from marine environments is an important source of methane and other gases to the atmosphere. Quantifying this flux is necessary for constraining global budgets andExpand
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Dissolved hydrocarbon flux from natural marine seeps to the southern California Bight
Natural marine seepage near Coal Oil Point, Santa Barbara Channel, California, injects large quantities of hydrocarbons into the coastal ocean. The dispersal and source strength of the injectedExpand
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Modifications of the local environment by natural marine hydrocarbon seeps
The bubble gas partial pressures, dissolved gas and oil, and fluid motions within the rising bubble streams of three shallow ( 108times) than atmospheric equilibrium values; at two of the seeps itExpand
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