Results 51 to 60 of about 1,521 (161)

Bedform Growth Beneath Periodic Internal Solitary Waves Propagating Through a Tidal Flow

Journal of Geophysical Research: Oceans, Volume 130, Issue 8, August 2025.
Abstract Internal solitary waves (ISWs), ubiquitous to lakes and coastal oceans, have often been proposed as a mechanism for generating subaqueous sandwaves. Yet, the physical mechanisms underlying ISW‐driven bedform growth remain poorly understood.
A. Posada‐Bedoya, J. Olsthoorn, L. Boegman   +2 more
wiley   +1 more source

Role of tectonic stress in seepage evolution along the gas hydrate‐charged Vestnesa Ridge, Fram Strait [PDF]

, 2015
Methane expulsion from the world ocean floor is a broadly observed phenomenon known to be episodic. Yet the processes that modulate seepage remain elusive.
Bunz, Stefan, Chand, Shyam, Faverola, Andreia Plaza, Franek, Peter, Johnson, Joel E., Knies, Jochen, Mienert, Jurgen   +6 more
core   +1 more source

Bolboforma from Leg 105, Labrador Sea and Baffin Bay, and the chronostratigraphy of Bolboforma in the North Atlantic [PDF]

, 1989
The genus Bolboforma, first described by Daniels and Spiegler (1974), is a problematic group of calcareous microfossils. Solbaforma is most probably a planktonic cyst (Rogl and Hochuli, 1976) having protozoan or algal affinities (Poag and Karowe, 1986 ...
Kaminski, M., Pallant, A.
core   +1 more source

Decreased Deep Water Oxygenation in the Western North Pacific During the Plio‐Pleistocene Transition

Geophysical Research Letters, Volume 52, Issue 14, 28 July 2025.
Abstract The deep North Pacific, a vast respired carbon reservoir, likely plays a key role in the Plio‐Pleistocene CO2 decline and global cooling, but evidence for this is lacking. Here, oxygenation change in the upper deep western North Pacific between 5.3 and 1.0 million years ago (Ma) is reconstructed using multiple organic and inorganic proxies ...
Man Zhao, Guodong Jia
wiley   +1 more source

Exploring the Chemical Profile, Antioxidants, and Anti‐Diabetic Properties of Coffee Beans From Selected East African Countries: A Comparative In Vitro and Computational Study

Food Science &Nutrition, Volume 13, Issue 7, July 2025.
Burundian coffee showed the strongest antioxidant activity (DPPH/FRAP), Ugandan coffee excelled in nitric oxide scavenging, while Tanzanian coffee led in α‐glucosidase/α‐amylase inhibition. LC–MS revealed that phenolic acids dominated in Burundian/Tanzanian beans, whereas Ugandan coffee had the highest caffeine content.
Almahi I. Mohamed, Ochuko L. Erukainure, Huda Ismail, Md. Shahidul Islam   +3 more
wiley   +1 more source

Deep-water bottom current dynamics: processes, products & challenges [PDF]

, 2013
Contourites are deep-water sedimentary deposits created under the influence of predominantly along-slope bottom currents. They are considered to be excellent deep-water recorders of global climatic change.
Van Rooij, D.
core  

Sediment Depositional History and Processes for the Eurasian Basin Since 54 Ma, Arctic Ocean

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 6, June 2025.
Abstract The Eurasian Basin in the Arctic Ocean, comprising the Amundsen and Nansen Basins separated by the Gakkel Ridge, has sediment deposits up to 4–5 km thick. However, its sedimentation history and processes remain poorly understood. Using 31 seismic profiles, we have estimated deposition rates for 54 Ma.
Pingchuan Tan, Chunyang Wang, Fei Wang, Jiabiao Li   +3 more
wiley   +1 more source

Geomagnetic Excursions Recorded in North Atlantic IODP Expedition 395C Sites U1555 and U1563

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 6, June 2025.
Abstract By studying deep‐sea drilled records from the North Atlantic Ocean, several magnetic instabilities of short duration, such as the Iceland Basin (188 ka), the Björn (1,255 ka) and the Gardar (1,460 ka) excursions, were discovered. These records have contributed to our understanding of Earth's magnetic field and are the foundation of the ...
Anita Di Chiara, Sara Satolli, Sarah A. Friedman, Deepa Dwyer, Gary D. Acton, Tom Dunkley Jones, Boris Theofanis Karatsolis, Paul N. Pearson, Takuma Suzuki, Sevasti Modestou, Suzanne O'Connell, Halima Ibrahim, Claire E. Jasper, Danielle E. LeBlanc, Saran Lee‐Takeda, Thena Thulasi, Deborah E. Eason, Matthias Sinnesael, Katharina Hochmuth, Anne Briais, Ross Parnell‐Turner, Leah J. LeVay, Expedition 395C/395 Science Party   +22 more
wiley   +1 more source

Early Jurassic extrinsic solar system dynamics versus intrinsic Earth processes: Toarcian sedimentation and benthic life in deep-sea contourite drift facies, Cardigan Bay Basin, UK

Progress in Earth and Planetary Science
The Cardigan Bay Basin (UK) may have functioned as a deep and narrow strait, and thereby influenced Early Jurassic oceanic circulation through the northern and southern Laurasian Seaway, and between Boreal and Peri-Tethys domains.
Grzegorz Pieńkowski, Alfred Uchman, Krzysztof Ninard, Kevin N. Page, Stephen P. Hesselbo   +4 more
doaj   +1 more source

Approaching the Miocene Climatic Optimum in Patagonia (Southern Argentina): Temperature Seasonality and a Potential Role for the Opening Drake Passage

Paleoceanography and Paleoclimatology, Volume 40, Issue 6, June 2025.
Abstract The Miocene Epoch (23.03–5.33 Ma) is receiving increased attention because estimated pCO2 and its associated warmth is comparable to projections over the next century. Well‐constrained sea‐surface temperatures in the tropics and northern latitudes express amplified warming during the Miocene Climatic Optimum (MCO; 16.9–14.7 Ma), yet data from ...
Linda C. Ivany, Claudia J. del Río, Maximiliano J. Alvarez, R. Paul Acosta, Kyger C. Lohmann, M. Sol Raigemborn   +5 more
wiley   +1 more source