Results 111 to 120 of about 699 (206)

Removing Climatic Overprints in Sedimentary Cosmogenic Beryllium Records: Potentials and Limits

Geochemistry, Geophysics, Geosystems
Continuous reconstructions of past variations of the Earth's magnetic field are based mainly on paleomagnetic and cosmogenic 10Be records in marine sediments. In both cases, the recording mechanisms can be affected by environmental processes.
Tatiana Savranskaia, Ramon Egli, Quentin Simon, Jean‐Pierre Valet, Franck Bassinot, Nicolas Thouveny   +5 more
doaj   +1 more source

Late Cambrian geomagnetic instability after the onset of inner core nucleation. [PDF]

Nat Commun, 2023
Li YX, Tarduno JA, Jiao W, Liu X, Peng S, Xu S, Yang A, Yang Z.   +7 more
europepmc   +1 more source

A linear theory of physical properties in inhomogeneous sediments and its application to relative paleointensity determination

, 2006
International audienceA linear model is developed to study the effect of variations in composition upon extensive physical properties of continuously deposited sediment sequences.
Fabian, K.
core  

Archaeomagnetism in the Levant and Mesopotamia Reveals the Largest Changes in the Geomagnetic Field. [PDF]

J Geophys Res Solid Earth, 2022
Shaar R, Gallet Y, Vaknin Y, Gonen L, Martin MAS, Adams MJ, Finkelstein I.   +6 more
europepmc   +1 more source

Relative paleointensity and environmental magnetics for IODP Site 303-U1307

Relative paleointensity (RPI; NRM/ARM) for the 20-50 mT demagnetization interval, magnetic susceptibility (κ) and magnetic grain size (κARM/κ) u-channel data, measured every centimetre between ~117 and 158 revised metres composite depth (rMCD) at IODP ...
Blake-Mizen, Keziah, Channell, James E T, Stoner, Joseph S, Carlson, Anders Eskil, Lawrence, Kira T, Bailey, Ian, Xuan, Chuang, Hatfield, Robert, Walczak, Maureen H   +8 more
core   +1 more source

Stalagmite paleomagnetic record of a quiet mid-to-late Holocene field activity in central South America. [PDF]

Nat Commun, 2022
Jaqueto P, Trindade RIF, Terra-Nova F, Feinberg JM, Novello VF, Stríkis NM, Schroedl P, Azevedo V, Strauss BE, Cruz FW, Cheng H, Edwards RL.   +11 more
europepmc   +1 more source

Paleomagnetic evidence for a long-lived, potentially reversing martian dynamo at ~3.9 Ga. [PDF]

Sci Adv, 2023
Steele SC, Fu RR, Volk MWR, North TL, Brenner AR, Muxworthy AR, Collins GS, Davison TM.   +7 more
europepmc   +1 more source

Relative paleointensity (RPI) of the Earth's magnetic field of sediment core PS69/899-2

Relative paleointensity (RPI) of the Earth's magnetic field from sediment cores PS69/899-2, located in the Indian sector of the Southern Ocean, covering the past 150,000 years, based on the age model described in Fripiat et al.
Sigman, Daniel M, Martínez-García, Alfredo, Liu, Ling, Schmitt, Mareike, Fripiat, François, Ai, Xuyuan E, Tiedemann, Ralf, Studer, Anja S, Diekmann, Bernhard, Haug, Gerald H, Frederichs, Thomas, Esper, Oliver, Pattyn, Frank, Lamy, Frank, Dumoulin, Cédric, Moretti, Simone   +15 more
core   +1 more source

Geomagnetic Paleointensity Obtained from Bottom Sediments of Lake Kitaura [PDF]

, 2001
A paleomagnetic and rockmagnetic study was done on a lake sediment core obtained from bottom sediments of Lake Kitaura. Rockmagnetic parameters, such as magnetic susceptibility, anhysteretic remanent magnetization (ARM), were measured in laboratory.
岡田,誠, 天野,一男, Kazuo,AMANO, Chizu,ITOTA, Haruka,MATSUOKA, Makoto,OKADA, 松岡,東香, 糸田,千鶴   +7 more
core  

A new high-resolution geomagnetic paleointensity record for the North American Holocene: A comparison of sedimentary and absolute intensity data

, 2000
A new high-resolution paleointensity record for North America has been constructed using Holocene sediments from Lake Pepin, Minnesota. Lake Pepin sediments yield the same Holocene paleosecular variation curve as nearby Lake St.
Brachfeld, Stefanie, Brachfeld, Stefanie A., Banerjee, Subir K., Banerjee, Subir   +3 more
core   +1 more source