Results 41 to 50 of about 42,046 (150)
Experimental simulations of space weathering on pentlandite
Meteoritics &Planetary Science, EarlyView.Abstract Pentlandite (Fe, Ni)9S8 is an important accessory mineral on asteroidal surfaces. It has been identified in returned regolith samples from asteroids Itokawa, Ryugu, and Bennu. Currently, systematic studies to understand the response of this mineral phase under space weathering conditions are lacking.
L. C. Chaves +8 more
wiley +1 more source
On the flare induced high-frequency global waves in the Sun [PDF]
, 2010 Recently, Karoff and Kjeldsen (2008) presented evidence of strong correlation between the energy in the high-frequency part (5 ...
Chaplin +17 more
core +1 more source
The Association Between Urbanisation and Household Food Security in Nigeria
Maternal &Child Nutrition, EarlyView.This paper focuses on the nexus between urbanisation and household food security in the context of Nigeria. The study uses night‐time light intensity as a proxy for urbanisation to capture the variation in urbanisation to estimate its relationship to household food security.
Joseph B. Ajefu +2 more
wiley +1 more source
Risk Analysis, EarlyView.Abstract There are two separate conceptualizations for assessing existential risks: Planetary Boundaries (PBs) and global catastrophic risks (GCRs). While these concepts are similar in principle, their underpinning literatures tend not to engage with each other.
Eoin McLaughlin, Matthias Beck
wiley +1 more source
Embracing the politics of transformation: Policy action as “battle‐settlement events”
Review of Policy Research, EarlyView.Abstract Societal transformations for addressing climate change are intensely contested and at risk of resistance and backlash to ambitious policy action. But they are frequently modeled through heuristics such as S‐curves which abstract from such conflicts, assuming increasing returns to scale as a driver of transformations.
James Patterson, Matthew Paterson
wiley +1 more source
A statistical correlation of sunquakes based on their seismic and white-light emission [PDF]
, 2015 Several mechanisms have been proposed to explain the transient seismic emission, i.e. “sunquakes,” from some solar flares. Some theories associate high-energy electrons and/or white-light emission with sunquakes.
A. Donea +45 more
core +2 more sources
Perspectives of Earth and Space Scientists, Volume 6, Issue 1, December 2025.Abstract The Solar, Anomalous, and Magnetospheric Explorer (SAMPEX) mission launched in July 1992 was the first NASA “Small Explorer” project. It had the goal to show how space missions could be developed much more rapidly than had become the situation in the 1980s and 1990s.
D. N. Baker, G. M. Mason
wiley +1 more source
Solar Flares: The Gradual Phase [PDF]
Solar Physics, 1989 AbstractOne has to distinguish between two kinds of the gradual phase of flares: (1) a gradual phase during which no energy is released so that we see only cooling after the impulsive phase (a confined flare), and (2) a gradual phase during which energy release continues (a dynamic flare).The simplest case of (1) is a single-loop flare which might ...
openaire +2 more sources
Using Ionosondes for Lower‐Ionosphere Remote Sensing
Geophysical Research Letters, Volume 52, Issue 11, 16 June 2025.Abstract Ionosondes are primarily used to measure the electron densities of the ionosphere's E and F‐region via frequency‐range analysis of the probing signal returns. The amplitude of the returning signal has often been ignored, however, and may allow estimates of other propagation effects such as D and E‐region absorption.
M. Strong, M. Cohen, I. Galkin
wiley +1 more source