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Natural hazards

Perspective plot looking west across the Hikurangi margin (New Zealand) at the 3 km/s S-velocity isosurface contoured in depth.
Posted inEditors' Highlights

Adjoint Tomography Illuminates Hikurangi Margin Complexity

by Michael Bostock 21 April 202227 January 2023

Waveform inversion of regional earthquakes reveals velocity anomalies interpreted as subducting seamounts that control an enigmatic segmentation in plate coupling along the Hikurangi margin.

Figure 1 from the paper, showing the depiction of a multiple-reservoir system and the system that is used in the computation of the index.
Posted inEditors' Highlights

A New Index to Assess Multiple-Reservoir Effects on Peak Floods

by Georgia Destouni 11 April 202220 May 2022

A simple, yet quantitative, index is demonstrated to quantify reductions in the peak flood resulting from multiple reservoirs, arranged in series along the same river reach.

Maps of debris flow similarity index (DFSI) and the corresponding lengths of those debris flow channel segments.
Posted inEditors' Highlights

Debris Flows Keep the Landscape on the Straight and Narrow

by Adam Booth 6 April 20223 May 2022

New methods for identifying debris flow-shaped channels improve hazard quantification and highlight how high uplift rates and fractured bedrock facilitate debris flow-dominated landscape evolution.

Tree-lined cliffs and hills rise from a coastal beach where ocean waves gently wash ashore.
Posted inFeatures

Exploring Subduction Zone Geohazards on Land and at Sea

by Mong-Han Huang, Kristin Morell, Alison Duvall, Sean F. Gallen and George E. Hilley 25 March 20221 June 2022

A new initiative is bringing together scientists to address fundamental questions about subduction zone geohazards, using the latest advances in observation technology and computational resources.

Map of the central-eastern Nepal Himalaya showing the locations of more than 12,800 landslides over a 30-year period.
Posted inEditors' Highlights

History Matters When Gauging Hillslope Susceptibility to Failure

by Matthew Brain 24 March 202212 April 2022

Using susceptibility models to forecast the potential locations of landslides is a key tool in mitigating landslide hazard, but are existing approaches appropriate in dynamic mountainous settings?

Time series of the vertical daily average displacement of continuous GNSS station.
Posted inEditors' Highlights

Continuity is the Father of Success

by Yosuke Aoki 15 February 202215 November 2022

Geodetic measurements indicate that Three Sisters Volcano uplifted by almost 300 millimeters in the past 25 years without significant anomalies at the surface.

A snowcat plows its way through snow with a rocky ridge in the background.
Posted inScience Updates

Sensing Iceland’s Most Active Volcano with a “Buried Hair”

by Sara Klaasen, Sölvi Thrastarson, Andreas Fichtner, Yeşim Çubuk-Sabuncu and Kristín Jónsdóttir 4 January 20221 June 2022

Distributed acoustic sensing offered researchers a means to measure ground deformation from atop ice-clad Grímsvötn volcano with unprecedented spatial and temporal resolutions.

Plot showing measurements of solar energetic protons at 07:30 UT on 11 September 2017.
Posted inEditors' Highlights

Next-Generation Solar Proton Monitors for Space Weather

by Steven K. Morley 16 December 202116 December 2021

NOAA’s weather satellites at geosynchronous orbit also measure space weather and a new series of instruments bring improved capabilities for monitoring and science discovery.

View of the Brahmaputra River with the sun low on the horizon
Posted inScience Updates

Tree Rings Reveal a 700-Year Record of Flooding in Bangladesh

by Mukund Palat Rao and Benjamin I. Cook 15 October 202115 October 2021

Trees tell of a wetter past along the Brahmaputra River and, combined with climate modeling, suggest heightened future flood risks in one of the world’s most densely populated areas.

Police tape in front of the National Cathedral.
Posted inFeatures

Ten Years on from the Quake That Shook the Nation’s Capital

by T. L. Pratt, M. C. Chapman, A. Shah, J. W. Horton Jr. and O. Boyd 20 August 202128 September 2021

A decade of study into the Virginia earthquake that damaged D.C. and reverberated up and down the Atlantic coast in 2011 has shed light on rare, but risk-laden, seismicity in eastern North America.

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Features from AGU Journals

RESEARCH SPOTLIGHTS
Earth’s Future
“How to Build a Climate-Resilient Water Supply”
By Rachel Fritts

EDITORS' HIGHLIGHTS
AGU Advances
“How Do Atmospheric Rivers Respond to Extratropical Variability?”
By Sarah Kang

EDITORS' VOX
Reviews of Geophysics
“Rare and Revealing: Radiocarbon in Service of Paleoceanography”
By Luke C. Skinner and Edouard Bard

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