Results 71 to 80 of about 355,580 (300)

Remote Sensing for Irrigation Water Management—The State of the Art and Prospects for Near‐Future Operations

Irrigation and Drainage, EarlyView.
ABSTRACT A recent UN report describes many regions as facing ‘water bankruptcy,’ a condition in which available water resources can no longer meet existing demands. In practice, this means irrigation will likely bear the greatest burden of future water‐use reductions, a complicated and fraught decision to make given its critical role in food security ...
Wim G. M. Bastiaanssen, Chris Perry, Royce Dalby, Yasir Mohamed, Xueliang Cai, Poolad Karimi, IJsbrand de Jong, Pasquale Steduto, Marat Beksultanov, Christopher C. M. Neale, David Molden, Waqas Awan, Laarousi Mohamed, Jippe Hoogeveen, Jeff Davids, Nutchanart Sriwongsitanon, P. S. Rao, Roula Bachour, Palitha Bandara, Sophea Chhim, Richard Evans, Tom Lahad, D. Nagesh Kumar, Zakaria Adawy, Devendra Singh Bundela, Kawa Hakzi, Isaya Kisekka, Nicolas Puelma, Alejandro A. Pannunzio, Benjamin Koetz, Mukhiddin Ibragimov   +30 more
wiley   +1 more source

Power Subsystem Approach for the Europa Mission

E3S Web of Conferences, 2017
NASA is planning to launch a spacecraft on a mission to the Jovian moon Europa, in order to conduct a detailed reconnaissance and investigation of its habitability. The spacecraft would orbit Jupiter and perform a detailed science investigation of Europa,
Ulloa-Severino Antonio, Carr Gregory A., Clark Douglas J., Orellana Sonny M., Arellano Roxanne, Smart Marshall C., Bugga Ratnakumar V., Boca Andreea, Dawson Stephen F.   +8 more
doaj   +1 more source

Single-Cell Genome and Group-Specific dsrAB Sequencing Implicate Marine Members of the Class Dehalococcoidia (Phylum Chloroflexi) in Sulfur Cycling

mBio, 2016
The marine subsurface sediment biosphere is widely inhabited by bacteria affiliated with the class Dehalococcoidia (DEH), phylum Chloroflexi, and yet little is known regarding their metabolisms. In this report, genomic content from a single DEH cell (DEH-
Kenneth Wasmund, Myriel Cooper, Lars Schreiber, Karen G. Lloyd, Brett J. Baker, Dorthe G. Petersen, Bo Barker Jørgensen, Ramunas Stepanauskas, Richard Reinhardt, Andreas Schramm, Alexander Loy, Lorenz Adrian   +11 more
doaj   +1 more source

Subsurface Ocean Signals from an Orbiting Polarization Lidar [PDF]

Remote Sensing, 2013
Detection of subsurface returns from the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) on the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) satellite were demonstrated. Despite the coarse range resolution of this aerosol lidar, evidence of subsurface scattering was observed as a delay and broadening of the ...
James H. Churnside, Brandi J. McCarty, Xiaomei Lu 0002   +2 more
openaire   +3 more sources

Small‐Scale Topographic Variability Shapes Molecular Diversity of Organic Matter in Coastal Dune Soils

Journal of Plant Nutrition and Soil Science, EarlyView.
Topography shapes ecosystem controls, driving microclimate, hydrology, and vegetation, which, in turn, influence topsoil traits and DOM composition in coastal dune soils. Distinct molecular patterns emerge across north‐facing and south‐facing slopes and dune valleys.
Lejonina Herting, Hannelore Waska, Kojo Amoako, Stephan L. Seibert, Gudrun Massmann, Philipp Maurischat   +5 more
wiley   +1 more source

Titan’s Strong Tidal Dissipation Precludes a Subsurface Ocean

Nature
Introduction: The Cassini spacecraft orbited Saturn from 2004 to 2017, performing over a hundred flybys of Titan, Saturn’s largest moon. Ten of these flybys were dedicated to gravity measurements, yielding unprecedented insight into the moon’s interior.
Flavio Petricca, Steven D. Vance, Marzia Parisi, Dustin Buccino, Gael Cascioli, Julie Castillo-Rogez, Brynna G. Downey, Francis Nimmo, Gabriel Tobie, Baptiste Journaux, Andrea Magnanini, Ula Jones, Mark Panning, Amirhossein Bagheri, Antonio Genova, Jonathan I. Lunine   +15 more
openaire   +4 more sources

Navigation and meteorological data during campaign TARA_20120223Z of the Tara Oceans expedition 2009-2013

, 2014
The Tara Oceans Expedition (2009-2013) sampled the world oceans on board a 36 m long schooner, collecting environmental data and organisms from viruses to planktonic metazoans for later analyses using modern sequencing and state-of-the-art imaging ...
Tara Oceans Consortium, Coordinators, Coordinators Tara Oceans Consortium (6959795), Météo France, Tara Oceans Expedition, Participants, Météo France (7890716), Participants Tara Oceans Expedition (6959798)   +5 more
core   +1 more source

New geochronological constraints on Late Pleistocene glaciation in the southern Cadí Massif, SE Pyrenees

Journal of Quaternary Science, EarlyView.
ABSTRACT The Cadí Massif (42°17′09″ N, 1°38′11″ E; 2649 m a.s.l.) in the southeastern Pyrenees preserves clear evidence of Late Pleistocene glaciation, although previous research has focused almost exclusively on its northern slope. By contrast, the southern slope has remained largely unexplored.
M. Oliva, J. Ventura, A. Çiner, M. A. Sarıkaya, J. Bonsoms, K. M. Wilcken   +5 more
wiley   +1 more source

Ocean mixed layer depth: A subsurface proxy of ocean‐atmosphere variability [PDF]

Journal of Geophysical Research: Oceans, 2006
A new criterion, based on the shallowest extreme curvature of near surface layer density or temperature profiles, is established for demarking the mixed layer depth, hmix. Using historical global hydrographic profile data, including conductivity‐temperature‐depth and expendable bathythermograph data obtained during World Ocean Circulation Experiment ...
K. Lorbacher, D. Dommenget, P. P. Niiler, A. Köhl   +3 more
openaire   +1 more source

MusselFinder: Automated dreissenid mussel density estimation via robotic benthic imaging

Limnology and Oceanography: Methods, EarlyView.
Abstract Despite the widespread need to map the abundance of invasive quagga and zebra mussels (Dreissena spp.) in lakes and reservoirs worldwide, current methods remain limited by data collection and analysis bottlenecks. Autonomous underwater vehicles (AUVs) combined with machine learning (ML) offer a scalable remote sensing approach for estimating ...
Angus Galloway, Peter C. Esselman, Anthony Geglio, Shadi Moradi, Jennifer M. Morris, Joseph Geisz, Magdalena K. Sobol, Graham W. Taylor   +7 more
wiley   +1 more source