Results 21 to 30 of about 76,429 (241)

Characterization of the South Atlantic Anomaly [PDF]

open access: yesNonlinear Processes in Geophysics, 2019
This research intends to characterize the South Atlantic Anomaly (SAA) by applying the power spectrum analysis approach. The motivation to study the SAA region is due to its nature. A comparison was made between the stations in the SAA region and outside
K. A. Nasuddin   +3 more
doaj   +1 more source

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

open access: yesNature Communications, 2022
The South Atlantic Anomaly has the lowest intensity of the geomagnetic field. A stalagmite, from Brazil shows through its magnetic remanence that in mid-to-late Holocene this anomaly, was not being expressed or recurrent at surface in millennial scale.
Plinio Jaqueto   +11 more
doaj   +1 more source

Ever‐present South Atlantic Anomaly damages spacecraft [PDF]

open access: yesEos, Transactions American Geophysical Union, 2002
On 15 June 2001, at 3:56 UT, the Moderate Resolution Imaging Spectroradiometer (MODIS), one of NASAs prime remote sensing instruments on the TERRA spacecraft, was rendered inoperative while on the western flank of the South Atlantic Anomaly (SAA). The SAA is a vaguely‐defined, oval‐shaped geographic region centered roughly off the east coast of Brazil ...
James R. Heirtzler   +2 more
openaire   +1 more source

Late Cretaceous Ridge Reorganization, Microplate Formation, and the Evolution of the Rio Grande Rise – Walvis Ridge Hot Spot Twins, South Atlantic Ocean

open access: yesGeochemistry, Geophysics, Geosystems, 2021
Rio Grande Rise (RGR) and Walvis Ridge (WR) are South Atlantic large igneous provinces (LIPs), formed on the South American and African plates, respectively, mainly by volcanism from a hot spot erupting at the Mid‐Atlantic Ridge (MAR) during the Late ...
William W. Sager   +4 more
doaj   +1 more source

The Geomagnetic Observatory on Tristan da Cunha: Setup, Operation and Experiences

open access: yesData Science Journal, 2011
The island Tristan da Cunha is located in the South Atlantic Anomaly, and until recently the area has been one of the largest gaps in the global geomagnetic observatory network.
Jürgen Matzka   +9 more
doaj   +1 more source

Ajuste de un modelo VAR como predictor de los campos de anomalías de precipitación en centroamérica

open access: yesRevista de Matemática: Teoría y Aplicaciones, 2012
Cluster analysis was used to identify common patterns of 15 precipitation points of the region, using their anomaly time series as grouping variables. Five clusters where identified through this process.
Eric J. Alfaro, F. Javier Soley
doaj   +1 more source

Impacts of Sea Surface Temperature and Atmospheric Teleconnection Patterns in the Northern Mid-Latitudes on Winter Extremely Cold Events in North China

open access: yesAdvances in Meteorology, 2021
The frequency distribution of winter extreme cold events (ECEs) in North China and the influences of mid-latitude sea surface temperature anomalies (SSTAs) in the Northern Hemisphere are studied.
Liping Li   +4 more
doaj   +1 more source

Energetic Proton Maps for the South Atlantic Anomaly [PDF]

open access: yes2007 IEEE Radiation Effects Data Workshop, 2007
A new set of flux intensity maps for energetic protons in the South Atlantic Anomaly (SAA) region is presented for the epoch 2000-2006 based on data from the compact environment anomaly sensor (CEASE) flown onboard the tri-service experiment-5 (TSX-5) satellite in a 410 km x 1710 km, 69 degree inclination orbit.
Gregory P. Ginet   +3 more
openaire   +1 more source

Sensitivity of South America Climate to Positive Extremes of Antarctic Sea Ice [PDF]

open access: yesAnais da Academia Brasileira de Ciências, 2022
Global climate change is expected to increasingly affect climate-sensitive sectors of society, such as the economy and environment, with significant impacts on water, energy, agriculture and fisheries.
CLÁUDIA K. PARISE   +5 more
doaj   +1 more source

Is the Atlantic Ocean driving the recent variability in South Asian dust? [PDF]

open access: yesAtmospheric Chemistry and Physics, 2021
This study investigates the large-scale factors controlling interannual variability in dust aerosols over South Asia during 2001–2018. We use a parameter DA%, which refers to the frequency of days in a year when high dust activity is experienced over a ...
P. Banerjee   +3 more
doaj   +1 more source

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