Forecasting intense geomagnetic activity using interplanetary magnetic field data
نویسندگان
چکیده
منابع مشابه
An Empirical Model Relating the Auroral Geomagnetic Activity to the Interplanetary Magnetic Field
A damped linear oscillator (LRC circuit) predicts a significant amount of the AL index variations when it is driven by the IMF's Bsouth component. The model parameters are determined from fitting the AL time series and show a small, apparently nonsystematic variation with the activity level. Following an isolated external disturbance the LRC model's response peaks at 15 min0.5 h and decays afte...
متن کاملBlack Hole's intense Magnetic Field
For a long time, there were two main theories related to how our universe would end. These were the Big Freeze and the Big Crunch. In short, the Big Crunch claimed that the universe would eventually stop expanding and collapse in on itself. This collapse would result in...well...a big crunch (for lack of a better term). Think “the Big Bang”, except just the opposite. That’s essentially what the...
متن کاملSolar Wind Anr Interplanetary Magnetic Field
1. Basic Concepts 2. Sun and Heliosphere at Times of Solar Activity Minimum 2.1. Typical Solar Wind and its Sources 2.2. The Ballerina Model 2.3. Solar Wind Stream Structure 2.4. The Two Basic States of the Solar Wind 2.4.1. Differences 2.4.2. Communities 2.5. Solar Wind Acceleration and Expansion 2.6. Solar Wind Streams and Their Interactions 2.6.1. Corotating Interaction Regions in the Inner ...
متن کاملModelling Geomagnetic Activity Data
Strong geomagnetic activity is a hazard to electronics and electric power facilities. Assessment of the actual geomagnetic activity level from local magnetometer monitoring therefore is of importance for risk assessment but also in earth sciences and exploration. Wavelet based signal processing methods are applied to extract meaningful information from magnetic field time series in a noisy envi...
متن کاملGeomagnetic Activity Forecasting: the State of the Art
Short-term (days to weeks) geomagnetic forecasts are valuable for a variety of public and private sector endeavors. However, forecast skill, as measured by the success of predicting geomagnetic indices, is disappointing, especially for disturbed conditions. Possible reasons for this lack of proficiency include an incomplete understanding of the solar origins of interplanetary disturbances, insu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Annales Geophysicae
سال: 2008
ISSN: 1432-0576
DOI: 10.5194/angeo-26-3989-2008