Featured
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Article |
Fluid-rich subducting topography generates anomalous forearc porosity
Electromagnetic data collected at the northern Hikurangi Margin, New Zealand show that a seamount on the incoming plate allows more water to subduct, compared with normal, unfaulted oceanic lithosphere.
- Christine Chesley
- , Samer Naif
- & Dan Bassett
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Article |
Extreme rainfall triggered the 2018 rift eruption at Kīlauea Volcano
Immediately before and during the eruption of Kīlauea Volcano in May 2018, anomalously high rainfall increased the pore pressure in the subsurface to its highest level in 50 years, causing weakening and mechanical failure of the edifice.
- Jamie I. Farquharson
- & Falk Amelung
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Article |
RETRACTED ARTICLE: Global analysis of streamflow response to forest management
Analysis of forest-management studies finds that forest removal is more likely to increase streamflow in areas with greater water storage between the surface and bedrock, and that forest planting is more likely to decrease streamflow in drier climates.
- Jaivime Evaristo
- & Jeffrey J. McDonnell
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Letter |
Extreme hydrothermal conditions at an active plate-bounding fault
Extreme temperatures and fluid pressures are measured, and their causes modelled, in a borehole into the Alpine Fault, where an earthquake rupture is expected within the next few decades.
- Rupert Sutherland
- , John Townend
- & Martin Zimmer
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Letter |
The contribution of the Precambrian continental lithosphere to global H2 production
The production of hydrogen gas from the Precambrian continental lithosphere has been underestimated; taking into account hydrogen from serpentinization and radiolysis may double estimates previously based on marine systems alone.
- Barbara Sherwood Lollar
- , T. C. Onstott
- & C. J. Ballentine
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Letter |
Evidence for high salinity of Early Cretaceous sea water from the Chesapeake Bay crater
Chemical, isotopic and physical evidence indicate that some of the groundwater in the Chesapeake Bay crater is remnant Early Cretaceous North Atlantic sea water, probably 100–145 million years old, with an average salinity of about 70‰, which is twice that of modern sea water.
- Ward E. Sanford
- , Michael W. Doughten
- & Thomas D. Bullen
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News |
Demand for water outstrips supply
Groundwater use is unsustainable in many of the world's major agricultural zones.
- Amanda Mascarelli
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Research Highlights |
Groundwater down, sea level up
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News & Views |
Shrinking glaciers under scrutiny
Melting glaciers contribute to sea-level rise, but measuring their mass loss over time is difficult. An analysis of satellite data on Earth's changing gravity field does just that, and delivers some unexpected results.
- Jonathan Bamber
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News |
‘Too soon’ to confirm success of Antarctic lake drilling
Lake Vostok project leader says more analysis needed to verify lake has been reached.
- Daniel Cressey
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News & Views |
When glacial giants roll over
The energy released by capsizing icebergs can be equal to that of small earthquakes — enough to create ocean waves of considerable magnitude. Should such 'glacial tsunamis' be added to the list of future global-warming hazards?
- Anders Levermann
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Research Highlights |
Hydrology: Groundwater stores running dry
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Letter |
Nitrate supply from deep to near-surface waters of the North Pacific subtropical gyre
Concentrations of dissolved inorganic carbon (DIC) decrease in the surface mixed layers during spring and summer in most of the oligotrophic ocean. The missing DIC is thought to be converted to particulate carbon by photosynthesis, but known mechanisms do not seem to supply enough nutrients for the photosynthesis. Here it is shown that short-lived transport events connect deep-water nitrate stocks with nutrient-poor surface waters.
- Kenneth S. Johnson
- , Stephen C. Riser
- & David M. Karl
Primary N2–He gas field formation in intracratonic sedimentary basins