Results 171 to 180 of about 26,404 (300)

Rapid ice-marginal lake growth in Alaska driven by glacier retreat through bed overdeepenings. [PDF]

Proc Natl Acad Sci U S A
McGrath D, Sass L, Armstrong WH, Florentine C, McCoy SW.   +4 more
europepmc   +1 more source

Microbial Endolithic Community at Meteor Crater

Meteoritics &Planetary Science, EarlyView.
Abstract Postimpact recovery and evolution in response to climate changes produced a modern ecosystem at Meteor Crater dominated by a grassland and woodland of piñon and juniper, which has been used to evaluate floral and megafaunal consequences of impact cratering during the Phanerozoic Eon of complex life.
David A. Kring, Charles S. Cockell
wiley   +1 more source

Predicting instabilities in transient landforms and interconnected ecosystems. [PDF]

Nat Commun
Smith T, Morr A, Bookhagen B, Boers N.
europepmc   +1 more source

Acquisitive root exploration strategies help maintain higher peak sap flux rates during summer drought, but more root biomass does not

New Phytologist, EarlyView.
Summary Roots are responsible for soil water uptake, yet little is known about how variation in fine‐root traits relates to whole‐tree water movement, particularly during periods of drought. By combining a 3‐yr dataset monitoring sap flow rates with measures of fine‐root biomass, length, and morphology across 10 tree species, we addressed hypotheses ...
Newton Tran, Marvin Lo, Meghan G. Midgley, Ray Dybzinski, Ella C. Segal, Charles H. Cannon, Chai‐Shian Kua, Christine R. Rollinson, Colleen M. Iversen, M. Luke McCormack   +9 more
wiley   +1 more source

Observed positive feedback between surface ablation and crevasse formation drives glacier acceleration and potential surge. [PDF]

Nat Commun
Nanni U, Bouchayer C, Åkesson H, Lefeuvre PM, Mannerfelt ES, Köhler A, Gagliardini O, Kohler J, Schmidt LS, Hult J, Renard F, Schuler TV.   +11 more
europepmc   +1 more source

MAPPING ICE SURFACE VELOCITY ON ALASKAN GLACIERS

MAPPING ICE SURFACE VELOCITY ON ALASKAN GLACIERS
Mountain glaciers are currently contributing approximately the same amount to sea level rise as the Antarctic and Greenland ice sheets combined, with Alaskan Glaciers contributing more than any other region. Therefore, ice surface velocities are needed as a baseline and to measure changes over the recent warming decade.
openaire  

Photosynthetic primary production in the Mesoproterozoic

New Phytologist, EarlyView.
Summary The Mesoproterozoic atmosphere had more CO2 and less O2 than at present. While the upper ocean was oxygenated, the deeper ocean was euxinic or ferruginous. Primary production was performed by Chlorobia, Cyanobacteria, Proteobacteria, and Archaeplastida.
Patricia Sánchez‐Baracaldo, John A. Raven   +1 more
wiley   +1 more source

Sequence of events that led to the South Lhonak lake outburst flood in Sikkim, India. [PDF]

Sci Rep
Mohanty LK, Gantayat P, Dixit A, Das Adhikari M, Biswas R, Singh VK.   +5 more
europepmc   +1 more source

Deriving glacier surface velocities from repeat optical images

, 2011
The velocity of glaciers is important for many aspects in glaciology. Mass accumulated in the accumulation area is transported down to the ablation area by deformation and sliding due to the gravitational force, and hence gla­cier velocity is connected to the mass balance of glaciers. It also contributes directly to the mass balance of calving glaciers
openaire   +2 more sources

Formation process of the gravel‐dominated deposit from the 2011 Tohoku‐oki tsunami in Ofunato, northeastern Japan, inferred by integrating sedimentology and tsunami modelling

Sedimentology, EarlyView.
ABSTRACT Tsunami deposits serve as geological records of past events and are essential for understanding the occurrence and dynamics of tsunamis. However, conventional research has largely focused on sandy and boulder deposits, leaving gravel‐dominated tsunami deposits comparatively underexplored; furthermore, their characteristics and formation ...
Hidetoshi Masuda, Haruki Imura, Koki Nakata, Takashi Ishizawa, Daisuke Sugawara, Kazuhisa Goto   +5 more
wiley   +1 more source