Results 61 to 70 of about 32,566 (298)

Combining multibeam and single beam echosounders for quantifying gas bubble release from the seafloor

Limnology and Oceanography: Methods, EarlyView.
Abstract Marine gas bubble release is a worldwide phenomenon that impacts the local marine ecosystem and contributes to carbon fluxes with respect to global warming. It is still challenging to assess gas flow for large seep areas (tens of km2), but recent advances in calibrating and processing multibeam echosounder (MBES) data make this problem ...
P. Urban, M. E. Veloso‐Alarcón, J. Greinert   +2 more
wiley   +1 more source

PENGKAJIAN RELASIONAL RISIKO BANJIR DENGAN BENTUK LAHAN BERDASARKAN CITRA SATELIT PENGINDERAAN JAUH DI DAERAH ALIRAN SUNGAI BENGAWAN SOLO BAGIAN HILIR

Jurnal Teknik Hidraulik, 2017
Daerah Aliran Bengawan Solo adalah daerah aliran sungai paling besar di Pulau Jawa dengan luas seluruh wilayah DAS, mulai dari hulu, tengah, hingga hilir mencapai 15.848,56 km2.
Wiweka Wiweka, Suwarsono Suwarsono
doaj   +1 more source

A prototype submersible sheathless flow cytometer designed for autonomous platforms

Limnology and Oceanography: Methods, EarlyView.
Abstract Development of submersible flow cytometers has allowed for continuous, in situ measurements of natural assemblages of phytoplankton cells. Here we introduce DeepCyte, a sensitive prototype submersible flow cytometer developed for deployment on autonomous platforms.
J. E. Swalwell, K. Cain, E. V. Armbrust
wiley   +1 more source

What is “accuracy”? Rethinking machine learning classifier performance metrics for highly imbalanced, high variance, zero‐inflated species count data

Limnology and Oceanography: Methods, EarlyView.
Abstract Machine learning has opened the door for the automated sorting (classification) of images, holograms and acoustic backscatters of individual plankton, invertebrates, fish and marine mammals. However, this field is complicated by decades of paradoxically promising reports of classifier performance that do not correlate with real‐world uptake of
Bianca M. Owen, James R. Tweedley, Navid R. Moheimani, Chris S. Hallett, Jeffrey J. Cosgrove, Leopold P. O. Silberstein   +5 more
wiley   +1 more source

Methods for seismic sedimentology and inversion using physics-driven convolutional model-based artificial intelligence

Frontiers in Earth Science
Seismic inversion is vital for reservoir characterization but faces significant challenges in complex fluvial-deltaic systems due to strong heterogeneity and thin-bedded formations.
Wei Qiao, Jiuzhan Hu, Benbin Li, Jing Bian, Yongyi Li, Shuming Zhang, Xianfang Du, Chenqi Ge, Yujie Zhang   +8 more
doaj   +1 more source

The Jurassic of North-East Greenland: The fluviatile Bristol Elv Formation, a new Middle Jurassic lithostratigraphic unit from Traill Ø, North-East Greenland [PDF]

Geological Survey of Denmark and Greenland Bulletin, 2004
A new lithostratigraphic unit, the Bristol Elv Formation, is erected in this paper. It is only known from Traill Ø, East Greenland, where it unconformably overlies Triassic redbeds of the Fleming Fjord Formation and is overlain by lithologically similar ...
Therkelsen, Jens, Surlyk, Finn
doaj  

Relationships between acoustic scattering layers and ocean stratification: An acoustic approach to estimate mixed layer depth

Limnology and Oceanography: Methods, EarlyView.
Abstract Ocean stratification, measured as mixed layer depth (MLD), is an important feature that influences many processes in the ocean; for example, by mediating the fluxes of momentum, heat and crucially key gases such as CO2 and oxygen from the atmosphere into the water column and vice versa. The conventional methods to measure stratification (e.g.,
Fabio Campanella, Jeroen van der Kooij, Liam Fernand   +2 more
wiley   +1 more source

Stochastic Flow Analysis for Optimization of the Operationality in Run-of-River Hydroelectric Plants in Mountain Areas

Energies
The highly temporal variability of the hydrological response in Mediterranean areas affects the operation of hydropower systems, especially in run-of-river (RoR) plants located in mountainous areas. Here, the water flow regime strongly determines failure,
Raquel Gómez-Beas, Eva Contreras, María José Polo, Cristina Aguilar   +3 more
doaj   +1 more source

pamfit: A new R package for spatially resolved analysis of Imaging PAM photosynthesis–irradiance light curve parameters

Limnology and Oceanography: Methods, EarlyView.
Abstract Imaging Pulse Amplitude Modulation (PAM) fluorometry allows spatially resolved measurements of Photosystem II (PSII) fluorescence kinetics through time without disturbing study organisms or their environments. In particular, the use of photosynthesis–irradiance curves (P–I curves) provides detailed information on PSII quantum efficiency ...
B. Jesus, P. Cartaxana, C. Williamson
wiley   +1 more source

Key factors influencing the severity of fluvial flood hazard from tropical cyclones [PDF]

, 2021
Helen Titley, Hannah Cloke, Shaun Harrigan, Florian Pappenberger, Christel Prudhomme, Joanne Robbins, Elisabeth Stephens, Ervin Zsótér   +7 more
openalex   +1 more source