Fractionation of 226Ra and Ba in the Upper North Pacific Ocean by Pieter van Beek, Roger François, Makio Honda, Matthew A. Charette, Jean-Louis Reyss, Raja Ganeshram, Christophe Monnin, Susumu Honjo

“…This finding has implications for dating of marine carbonates by 226Ra, which requires a constant initial 226Ra/Ba ratio incorporated in the shells and for using 226Ra as an abyssal circulation and mixing tracer.…”
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Physical and remineralization processes govern the cobalt distribution in the deep western Atlantic Ocean by G. Dulaquais, M. Boye, M. J. A. Rijkenberg, X. Carton

“…In the Antarctic Bottom Waters, the enrichment in <i>D</i>Co with aging of the water mass can be related to suspension and redissolution of bottom sediments a well as diffusion of <i>D</i>Co from abyssal sediments. Mixing and dilution of deep water masses, rather than scavenging of <i>D</i>Co onto settling particles, generated the meridional decrease of <i>D</i>Co along the southward large-scale circulation in the deep western Atlantic. …”
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Assessment of the bacterial community structure in shallow and deep sediments of the Perdido Fold Belt region in the Gulf of Mexico by Ma. Fernanda Sánchez-Soto Jiménez, Daniel Cerqueda-García, Jorge L. Montero-Muñoz, Ma. Leopoldina Aguirre-Macedo, José Q. García-Maldonado

“…Additionally, the shallow sites plotted further from each other on the NMDS whereas samples from the deeper sites (abyssal plains) plotted much more closely to each other. …”
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Covariation of Deep Antarctic Pacific Oxygenation and Atmospheric CO2 during the Last 770 kyr by Zheng Tang, Tiegang Li, Zhifang Xiong, Haowen Dang, Jingteng Guo

“…Observed variations in the degree of deep oxygenation and “organic carbon pump” efficiency in the central AZ might be driven primarily by physical “ventilation” processes (i.e., overturning circulation, mixing, and/or air–sea gas exchange). Our records of abyssal oxygenation in the central AZ, which vary in concert with atmospheric CO2 levels over the last several G–IG cycles, provide strong evidence that SO ventilation plays a significant role in controlling variations in both the amount of respired carbon sequestered in the deep ocean and atmospheric CO2 concentrations on G–IG timescales. …”
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Diverse Genomic Traits Differentiate Sinking-Particle-Associated versus Free-Living Microbes throughout the Oligotrophic Open Ocean Water Column by Andy O. Leu, John M. Eppley, Andrew Burger, Edward F. DeLong

“…Shallow-water particle-associated microbes had elevated genomic GC content and proteome nitrogen content and reduced proteome carbon content in comparison to abyssal particle-associated microbes. An inverse trend was observed for their sympatric free-living counterparts. …”
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The marine biogeochemistry of dissolved and colloidal iron by Fitzsimmons, Jessica Nicole

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Petrogenesis of the Khaku pegmatites corundum-bearing in the margin of Alvand granite complex, and its comparison with important worldwide ruby and sapphire deposits by Hadis Sadeghi, Shahryar Mahmoudi, Mohammad Reza Jafari, Mohammad Ali Arian

“…This classification has 4 main categories or classes including 2 Abyssal classes (high grade, high pressure to low), Muscovite (high pressure, low temperature), and Miarolitic (shallow level of rare element with low temperature and pressure). …”
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Phytoplankton-derived polysaccharides and microbial peptidoglycans are key nutrients for deep-sea microbes in the Mariana Trench by Yan-Ru Dang, Qian-Qian Cha, Sha-Sha Liu, Shu-Yan Wang, Ping-Yi Li, Chun-Yang Li, Peng Wang, Xiu-Lan Chen, Ji-Wei Tian, Yu Xin, Yin Chen, Yu-Zhong Zhang, Qi-Long Qin

“…The primary food source for abyssal biota is the sedimentation of particulate organic polymers. …”
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Structure of pine stands in the area of amber production at the North-Eastern part of the West Polissya by Leonid Kopiy, Yulian Kahaniak, Serhiy Kopiy, Vitalii Suhovych, Maria Kopiy, Igor Fizyk

“…The extraction of minerals by using of powerful water pumps leads to a significant disturbance of the terrain, the formation of significant abysses, intra-soil voids, which creates significant threats for forestry activities. …”
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TECTONIC POSITION OF MINGLING DYKES IN ACCRETION-COLLISION SYSTEM OF EARLY CALEDONIDES OF WEST SANGILEN (SOUTH-EAST TUVA, RUSSIA) by Irina V. Karmysheva, Vladimir G. Vladimirov, Aleksander G. Vladimirov, Roman A. Shelepaev, Vladislav A. Yakovlev, Elena A. Vasyukova

“…Contacts between basic and felsic rocks vary from smooth contrasting to complex ‘lacerated’ flameshaped, and gradual transition zones are present (Fig. 6).The dykes were formed at mesoabyssal or abyssal depths, and the subliquidus heat regime was thus maintained for a long time, and even the smallest portions of the basic-rock melt were consolidated through quite a long period of time. …”
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Inputs and processes affecting the distribution of particulate iron in the North Atlantic along the GEOVIDE (GEOTRACES GA01) section by A. Gourain, A. Gourain, H. Planquette, M. Cheize, M. Cheize, N. Lemaitre, N. Lemaitre, J.-L. Menzel Barraqueta, J.-L. Menzel Barraqueta, R. Shelley, R. Shelley, P. Lherminier, G. Sarthou

“…</p> <p>Within the Iberian Abyssal Plain, the ratio of PFe to PAl was identical to the continental crust molar ratio (0.21&thinsp;mol&thinsp;mol<span class="inline-formula">⁻¹</span>), indicating the important influence of crustal particles in the water column. …”
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Assessing global-scale organic matter reactivity patterns in marine sediments using a lognormal reactive continuum model by S. Xu, S. Xu, S. Xu, B. Liu, S. Arndt, S. Kasten, S. Kasten, S. Kasten, Z. Wu

“…The results show that the apparent OM reactivity (<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M5" display="inline" overflow="scroll" dspmath="mathml"><mrow><mo>〈</mo><mi>k</mi><mo>〉</mo><mo>=</mo><mi mathvariant="italic">μ</mi><mo>⋅</mo><mi>exp⁡</mi><mo>(</mo><msup><mi mathvariant="italic">σ</mi><mn mathvariant="normal">2</mn></msup><mo>/</mo><mn mathvariant="normal">2</mn><mo>)</mo></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="90pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="a673da4fc51fe21a3219eb36d8711246"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2251-2023-ie00001.svg" width="90pt" height="16pt" src="bg-20-2251-2023-ie00001.png"/></svg:svg></span></span>) decreases with decreasing sedimentation rate (<span class="inline-formula"><i>ω</i></span>) and that OM reactivity is more than 3 orders of magnitude higher in shelf than in abyssal regions. Despite the general global trends, higher than expected OM reactivity is observed in certain ocean regions characterized by great water depth or pronounced oxygen minimum zones, such as the eastern–western coastal equatorial Pacific and the Arabian Sea, emphasizing the complex control of the depositional environment (e.g., OM flux, oxygen content in the water column) on benthic OM reactivity. …”
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6 Poems by Alisa Velaj, Arben P. Latifi

“…The Coolest Loser Blind eyes, sleepy,CHAR(13) + CHAR(10) across worldly winters –CHAR(13) + CHAR(10) eyes sunk into blooming abysses, my loser.CHAR(13) + CHAR(10) Please take a quick look at the sun by dawn,CHAR(13) + CHAR(10) it’s a lamp brighter than an eye’s pupil... …”
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State of the climate in 2010 by Achberger, C, Ackerman, SA, Ahlstrøm, A, Alfaro, E, Allan, R, Alves, L, Amador, J, Amelie, V, Andrianjafinirina, S, Antonov, J, Arndt, D, Ashik, I, Atheru, Z, Attaher, S, Baez, J, Banzon, V, Baringer, M, Barreira, S, Barriopedro, D, Barthia, P, Beal, L, Becker, A, Behrenfeld, M, Bell, G, Belward, A

“…Global integrals of upper ocean heat content for the past several years have reached values consistently higher than for all prior times in the record, demonstrating the dominant role of the ocean in the Earth's energy budget. Deep and abyssal waters of Antarctic origin have also trended warmer on average since the early 1990s. …”

Deep, diverse and definitely different: unique attributes of the world's largest ecosystem by E. Ramirez-Llodra, A. Brandt, R. Danovaro, B. De Mol, E. Escobar, C. R. German, L. A. Levin, P. Martinez Arbizu, L. Menot, P. Buhl-Mortensen, B. E. Narayanaswamy, C. R. Smith, D. P. Tittensor, P. A. Tyler, A. Vanreusel, M. Vecchione

“…This is true for most of the continental margins and abyssal plains with hot spots of diversity such as seamounts or cold-water corals. …”
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A 1.5-million-year record of orbital and millennial climate variability in the North Atlantic by D. A. Hodell, S. J. Crowhurst, L. Lourens, V. Margari, J. Nicolson, J. E. Rolfe, L. C. Skinner, N. C. Thomas, P. C. Tzedakis, M. J. Mleneck-Vautravers, E. W. Wolff

“…A strong correlation exists between millennial increases in planktic <span class="inline-formula"><i>δ</i>¹⁸O</span> (cooling) and decreases in benthic <span class="inline-formula"><i>δ</i>¹³C</span>, indicating that millennial variations in North Atlantic surface temperature are mirrored by changes in deep-water circulation and remineralization of carbon in the abyssal ocean. We find strong evidence that climate variability on millennial and orbital scales is coupled<span id="page608"/> across different timescales and interacts in both directions, which may be important for linking internal climate dynamics and external astronomical forcing.…”
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State of the climate in 2010 by Ganesan, Anita Lakshmi, Blunden, Jessica, Arndt, Derek, Baringer, M. O.

“…Global integrals of upper ocean heat content for the past several years have reached values consistently higher than for all prior times in the record, demonstrating the dominant role of the ocean in the Earth's energy budget. Deep and abyssal waters of Antarctic origin have also trended warmer on average since the early 1990s. …”
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Report of the workshop Evaluating the nature of midwater mining plumes and their potential effects on midwater ecosystems by Jeffrey Drazen, Craig Smith, Kristina Gjerde, Whitlow Au, Jesse Black, Glenn Carter, Malcolm Clark, Jennifer Durden, Pierre Dutrieux, Erica Goetze, Steven Haddock, Mariko Hatta, Chris Hauton, Paul Hill, Julian Koslow, Astrid Leitner, Chris Measures, Aude Pacini, Frank Parrish, Thomas Peacock, Jessica Perelman, Tracey Sutton, Celine Taymans, Verena Tunnicliffe, Les Watling, Hiroyuki Yamamoto, Emily Young, Amanda Ziegler

“…The International Seabed Authority (ISA) is developing regulations to control the future exploitation of deep-sea mineral resources including sulphide deposits near hydrothermal vents, polymetallic nodules on the abyssal seafloor, and cobalt crusts on seamounts. …”
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