geomagnetic field Archives

Magnification: 160x, bright field (negative image), stacked image Fundort / Site: Barbados Alter / Age: approx. 32-35 million years (late Eocene - early Oligocene) Präparation / Preparation: Andreas Drews Radiolarians are unicellulars of diameter 0.1–0.2 mm that produce intricate mineral skeletons, typically with a central capsule dividing the cell into the inner and outer portions of endoplasm and ectoplasm.The elaborate mineral skeleton is usually made of silica. They are found as zooplankton throughout the ocean, and their skeletal remains make up a large part of the cover of the ocean floor as siliceous ooze. Due to their rapid turn-over of species, they represent an important diagnostic fossil found from the Cambrian onwards. -- Wikipedia

Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Fossils & Paleontology, Microbiology & Virology, Origin & Evolution of Life, Status Report, Stellar Cartography, Water/Hycean Worlds & Oceanography

Cosmic Radiation Drives Quasi-periodic Changes In The Diversity Of Siliceous Marine Microplankton

by Keith CowingFebruary 15, 2024

Radiolarians are significant contributors to the oceanic primary productivity and the global silica cycle in the last 500 Myr. Their diversity throughout the Phanerozoic shows periodic fluctuations.

Time histories of the altitude profiles of the collision rate per electron obtained by a series of simulations with mirror force. The initial kinetic energy of (a, d, g) 1 keV, (b, e, h) 3 keV, and (c, f, i) 10 keV and the initial pitch angle of (a–c) 0 degree, (d–f) 30 degree, and (g–i) 60 degree are assumed at 400 km -- Tohoku University

Atmospheres, Climate, Weather, Biophysics, Magnetic Fields, Electromagnetism, bioelectricity,, Press Release, Radiation

Geomagnetic Field Protects Earth From Electron Showers

by Keith CowingAugust 4, 2023August 4, 2023

Understanding the ionosphere high in the Earth’s atmosphere is important due to its effects on communications systems, satellites and crucial chemical features including the ozone layer. New insights into the […]

geomagnetic field

Cosmic Radiation Drives Quasi-periodic Changes In The Diversity Of Siliceous Marine Microplankton

Geomagnetic Field Protects Earth From Electron Showers

Why Europa’s Hidden Ocean May Be More Difficult To Reach Than Scientists Thought

Pinpointing Where Cells First Begin Copying DNA

Experimental Measurements of Benzene Ice Critical Saturation Ratios on Titan Tholins and Impact on the Microphysical Modeling of Titan’s South Polar Benzene Cloud

From Mars to Minas: Research Reclassifies Organisms That Thrive In Highly Saline Environments

Could Alien Signals Be Hiding On A Different Radio Channel?