Results 81 to 90 of about 105,881 (342)

Using spaceborne SAR and ground-based measurements to identify spatial patterns in soil moisture and seasonal thaw timing in permafrost environments of Alaska

Frontiers in Remote Sensing
Spatiotemporal patterns in soil moisture play a critical role in the near-surface energy balance in permafrost regions, yet soil moisture detection in periglacial environments is complicated by highly heterogeneous terrain conditions. We integrate ground-
W. Brad Baxter, Zachary Hoppinen, Kristofer Lasko, Tate Meehan, David Brodylo, Taylor D. Sullivan, Amanda J. Barker, Thomas A. Douglas   +7 more
doaj   +1 more source

Investigating lake-area dynamics across a permafrost-thaw spectrum using airborne electromagnetic surveys and remote sensing time-series data in Yukon Flats, Alaska

Environmental Research Letters, 2019
Lakes in boreal lowlands cycle carbon and supply an important source of freshwater for wildlife and migratory waterfowl. The abundance and distribution of these lakes are supported, in part, by permafrost distribution, which is subject to change ...
David M Rey, Michelle Walvoord, Burke Minsley, Jennifer Rover, Kamini Singha   +4 more
doaj   +1 more source

Water pathways and ancient lakes: Flowing towards new models to unravel the past

The Depositional Record, EarlyView.
Abstract Significant progress has been made in understanding lake basin evolution through climatic and tectonic changes using sedimentology, sequence stratigraphy, geochemistry, hydrology and watershed characteristics to interpret three main lake basin types: overfilled, balanced‐fill and underfilled, including fluvio‐lacustrine systems.
Cecilia A. Benavente, Kevin M. Bohacs, Sila Pla‐Pueyo   +2 more
wiley   +1 more source

Fate of wastewater nitrogen upon injection into a coastal saline groundwater system, Florida Keys, USA

The Depositional Record, EarlyView.
Despite advanced wastewater treatment, dilution by rainwater and mixing, and microbial modification, nitrogen nutrients derived from shallowly injected wastewater are detected in nearshore waters in the Florida Keys. Abstract Injection of treated wastewater into the shallow subsurface on islands and along coastlines is a common practice in areas like ...
Miquela Ingalls, Lee R. Kump, Emily Stoller, Kate Meyers   +3 more
wiley   +1 more source

THE AMERICAN GEOPHYSICAL UNION [PDF]

Science, 1920
n ...
openaire   +3 more sources

Untangling sedimentation processes in a deep fjord lake in Labrador: A high‐resolution archive of past environment dynamics at Grand Lake

The Depositional Record, EarlyView.
Sedimentological and geochemical characteristics are used to reconstruct sedimentation dynamics and erosional processes. Several rapidly deposited layers are characterised over changing depositional environments during the Late Holocene, from a phase when the lake was connected to the sea to a more stable state conducive to varve formation.
Milena S. Kury, Pierre Francus, Léo Chassiot, Dermot Antoniades, Guillaume St‐Onge, Juliette Girard, Patrick Lajeunesse   +6 more
wiley   +1 more source

Editorial: Critical zone geophysics

Frontiers in Water, 2022
Marc Dumont, Marc Dumont, Sylvain Pasquet, Nicole Fernandez, Jean Marçais, Ludovic Bodet   +5 more
doaj   +1 more source

Interactive, Shallow Machine Learning-Based Semantic Segmentation of 2D and 3D Geophysical Data from Archaeological Sites

Remote Sensing
In recent decades, technological developments in archaeological geophysics have led to growing data volumes, so that an important bottleneck is now at the stage of data interpretation.
Lieven Verdonck, Michel Dabas, Marc Bui
doaj   +1 more source

Late Pleistocene to Holocene sedimentation in the Great Blue Hole (Lighthouse Reef, Belize): Results from a 30 m long core

The Depositional Record, EarlyView.
A 30 m long sedimentary succession at the bottom of the Belize Blue Hole represents terrestrial cenote (12.5–7.2 ka BP), restricted marine swamp (7.2–5.7 ka BP) and fully marine lagoonal phases (5.7–0 ka BP) on Lighthouse Reef carbonate platform. Post‐glacial and Holocene sea‐level rise largely controlled the sedimentological, faunal and floral changes
Eberhard Gischler, Dominik Schmitt, Annika Wiegand, Hermann Behling, Lyudmila Shumilovskikh, Martin Melles, Volker Wennrich, Elija Nolte, Jozef Grego, Flavio S. Anselmetti, Hendrik Vogel, Daniel Birgel, Jörn Peckmann   +12 more
wiley   +1 more source

Integrated approach for sinkhole evaluation and evolution prediction in the Central Ebro Basin (NE Spain)

International Journal of Speleology, 2017
Evaluation of karst hazards benefits from the integration of different techniques, methodologies and approaches. Each one presents a different signature and is sensitive to certain indicators related to karst hazards.
Oscar Pueyo Anchuela, Andrés Pocoví Juan, Antonio M. Casas Sainz, Javier Gracia Abadias, Carlos L. Liesa Carrera   +4 more
doaj   +1 more source