Advance online publication


The latest research papers, published online ahead of print. These online versions are definitive and may be cited using the digital object identifier (DOI).

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Commentaries

Topography reveals seismic hazard

Eric Kirby, Kelin Whipple & Nathan Harkins

Published online: 20 July 2008; | doi:10.1038/ngeo265

The devastating earthquake in the Chinese province of Sichuan struck an area that was not expected to suffer seismic activity of such magnitude. Yet topographic analyses of the region indicate active deformation, suggesting a way of refining maps of earthquake risk elsewhere.


Myanmar's deadly daffodil

Peter J. Webster

Published online: 20 July 2008; | doi:10.1038/ngeo257

Tropical cyclone Nargis wrought havoc in southern Myanmar, with an estimated death toll well above 100,000. Potential future disasters could be alleviated with currently available forecasting skill and effective disaster mitigation plans.


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Letters

Increase in hourly precipitation extremes beyond expectations from temperature changes

Geert Lenderink & Erik van Meijgaard

Published online: 20 July 2008; | doi:10.1038/ngeo262

Changes in precipitation extremes under greenhouse warming are commonly assumed to be constrained by the Clausius–Clapeyron relationship, implying an increase in extreme precipitation of 7% per degree of climate warming. An analysis of 99 years of observations along with simulations with a regional climate model show that short-duration precipitation extremes can instead increase in severity twice as fast, by 14% per degree of warming.


Phanerozoic trends in skeletal mineralogy driven by mass extinctions

Wolfgang Kiessling, Martin Aberhan & Loïc Villier

Published online: 11 July 2008; | doi:10.1038/ngeo251

Changes in ocean chemistry that favoured the precipitation of aragonite or calcite are thought to have influenced the skeletal mineralogy of marine calcifyers. An investigation of the original skeletal mineralogy of large numbers of marine taxa suggests that the selective recovery of marine organisms from mass extinctions has a much greater influence on the overall percentage of aragonitic organisms than the Mg/Ca ratio of the oceans.


Monsoons as eddy-mediated regime transitions of the tropical overturning circulation

Simona Bordoni & Tapio Schneider

Published online: 06 July 2008; | doi:10.1038/ngeo248

Monsoons are often viewed as planetary-scale sea-breeze circulations, caused by contrasts in the thermal properties between oceans and land surfaces. Numerical simulations suggest that instead feedbacks between large-scale extratropical eddies and the tropical atmospheric overturning circulation are essential for the development of monsoons.


Evidence for a landslide origin of New Zealand's Waiho Loop moraine

D. Santamaria Tovar, J. Shulmeister & T. R. Davies

Published online: 29 June 2008; | doi:10.1038/ngeo249

The Waiho Loop Moraine has been interpreted as evidence for Younger Dryas cooling in southern New Zealand, but recent dating and climatological studies have questioned this idea. A detailed analysis of the sedimentology of the moraine suggests it was formed after a large landslide onto the Franz Josef glacier triggered a glacial surge, independent of climate forcing.


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Articles

Mechanisms for retention of bioavailable nitrogen in volcanic rainforest soils

Dries Huygens, Pascal Boeckx, Pamela Templer, Leandro Paulino, Oswald Van Cleemput, Carlos Oyarzún, Christoph Müller & Roberto Godoy

Published online: 11 July 2008; | doi:10.1038/ngeo252

Pristine temperate rainforests are known to produce large amounts of bioavailable nitrogen, with only minimal loss. Tracing 15N in volcanic soils of a temperate evergreen rainforest in southern Chile helps to further unravel the retention mechanisms for bioavailable nitrogen in these ecosystems.


Predicting groundwater arsenic contamination in Southeast Asia from surface parameters

Lenny Winkel, Michael Berg, Manouchehr Amini, Stephan J. Hug & C. Annette Johnson

Published online: 11 July 2008; | doi:10.1038/ngeo254

Arsenic contamination of groundwater resources threatens the health of millions of people worldwide, particularly in the densely populated river deltas of Southeast Asia. Maps of areas at risk of groundwater arsenic concentrations have been produced by combining geological and surface-soil parameters in a logistic regression model. They show that Holocene deltaic and organic-rich surface sediments are key indicators for arsenic risk areas and indicate elevated risks in Sumatra and Myanmar where no groundwater studies exist.


Self-subduction of the Pangaean global plate

Gabriel Gutiérrez-Alonso, Javier Fernández-Suárez, Arlo B. Weil, J. Brendan Murphy, R. Damian Nance, Fernando Corfú & Stephen T. Johnston

Published online: 06 July 2008; | doi:10.1038/ngeo250

The Earth's continents amalgamated into the supercontinent Pangaea 320 million years ago. After the supercontinent formed, structural deformation continued, which eventually resulted in the subduction of the ocean margin of Pangaea beneath the continental edge at the other end of the same plate.


Until print versions of AOP papers are published, they should be cited in the style "Author(s) Nature Geoscience advance online publication, day month year (doi:10.1038/ngeoXXXXX)". Once the print version (identical to the AOP) is published, it should be cited as follows: "Author(s) Nature Geoscience volume, page (year); advance online publication, (doi:10.1038/ngeoXXXXX)".

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