Results 71 to 80 of about 26,308 (272)

Neogene paleoceanography of the eastern equatorial Pacific based on the radiolarian record of IODP drill sites off Costa Rica [PDF]

, 2017
The Integrated Ocean Drilling Program (IODP) Expedition 344 drilled cores following a transect across the convergent margin off Costa Rica. Two of the five sites (U1381 and U1414) are the subject of the present study.
Baumgartner, Peter O., Baxter, Alan T., Boltovskoy, Demetrio, Sandoval, María I.   +3 more
core   +1 more source

Unexpectedly High Accumulation Rates in the 2022 Mt. Logan Ice Core Reveal Warm‐Season Drivers of Precipitation Variability

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 2, 28 January 2026.
Abstract Ice cores from Mt. Logan, the second highest peak in North America located in the St. Elias mountains in southwest Yukon, Canada, have provided conflicting accumulation records, thus the hydroclimate response to changing atmospheric conditions in the highest elevation regions is not well constrained.
Kira M. Holland, Alison S. Criscitiello, Joseph R. McConnell, Bradley R. Markle, Hanaa A. K. Yousif, Emma Skelton, Sophia M. Wensman, Britta J. L. Jensen, Dominic A. Winski, Seth W. Campbell, Nathan J. Chellman   +10 more
wiley   +1 more source

Can biochar ameliorate phosphorus deficiency and aluminium phytotoxicity in acid soils? : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy of Applied Science in Soil Science at Massey University, Palmerston North, New Zealand [PDF]

, 2015
The use of biochar as soil amendment to enhance soil functionality is being increasingly investigated, with particular attention given to its effects on the sustainable increase of crop production and carbon (C) sequestration. To date, however, limited
Shen, Qinhua
core  

Tephra fall impacts to buildings: the 2017–2018 Manaro Voui eruption, Vanuatu

Frontiers in Earth Science
Building damage from tephra falls can have a substantial impact on exposed communities around erupting volcanoes. There are limited empirical studies of tephra fall impacts on buildings, with none on tephra falls impacting traditional thatched timber ...
Susanna F. Jenkins, Ame McSporran, Thomas M. Wilson, Carol Stewart, Graham Leonard, Sandrine Cevuard, Esline Garaebiti   +6 more
doaj   +1 more source

Difference in Slip Patterns Between Two Prehistoric Giant Earthquakes Along the Southern Kuril Trench

Geophysical Research Letters, Volume 53, Issue 1, 16 January 2026.
Abstract This study reveals different slip patterns of tsunami sources between two prehistoric giant earthquakes along the southern Kuril Trench, based on an integration of geological data and numerical simulations. The most recent giant earthquake occurred in the 17th century and its predecessor was in the 13th–14th century.
Kei Ioki, Yuki Sawai, Yuichi Namegaya, Dan Matsumoto, Koichiro Tanigawa, Yumi Shimada, Toru Tamura, Rina Okada   +7 more
wiley   +1 more source

Guide to the nature and methods of analysis of the clay fraction of tephras from the South Auckland region, New Zealand. [PDF]

, 1983
The manual outlines some of the more common laboratory procedures available for qualitatively and quantitatively analysing the composition of the tephric clays, many of which are difficult to determine because of their short range order or 'amorphous ...
Lowe, David J., Nelson, Campbell S.
core   +1 more source

Evaluating the influence of lake morphology, trophic status and diagenesis on geochemical profiles in lake sediments [PDF]

, 2010
Recent geochemical studies provide evidence that changes in vertical distributions of nutrients in lake sediments are driven by anthropogenic activities, based primarily on trends of increasing concentrations in upper sediment layers.
Hamilton, David P., Pilditch, Conrad A., Trolle, Dennis   +2 more
core   +2 more sources

Relation between Central European Climate Change and Eifel Volcanism during the Last 130,000 Years: The ELSA-23-Tephra-Stack

Quaternary
The analysis of tephra layers in maar lake sediments of the Eifel shows 14 well-visible tephra during the last glacial cycle from the Holocene to the Eemian (0–130,000 yr b2k).
Frank Sirocko, Frederik Krebsbach, Johannes Albert, Sarah Britzius, Fiona Schenk, Michael W. Förster   +5 more
doaj   +1 more source

Dental fluorosis in the European roe deer (Capreolus capreolus): A review of the pathological changes in the enamel of fluorotic cheek teeth and the abnormal pattern of dental wear in affected dentitions

The Anatomical Record, Volume 309, Issue 1, Page 166-186, January 2026.
Abstract This article reviews the pathological changes in the enamel of permanent mandibular cheek teeth and their sequelae in European roe deer from regions polluted by anthropogenic fluoride emissions. The primary (developmental) changes of fluorotic roe deer enamel are hypomineralization and microstructural aberrations, including enamel hypoplasia ...
Uwe Kierdorf, Horst Kierdorf
wiley   +1 more source

Tephra segregation profiles based on disdrometer observations and tephra dispersal modeling: Vulcanian eruptions of Sakurajima volcano, Japan

Earth, Planets and Space
The profile of tephra concentration along a volcanic plume (i.e., the tephra segregation profile) is an important source parameter for the simulation of tephra transport and deposition and thus for the tephra sedimentation load.
Kosei Takishita, Alexandros-Panagiotis Poulidis, Masato Iguchi   +2 more
doaj   +1 more source