RE: ARLA/CLUSTER: condições solares

Terça-Feira, 25 de Março de 2008 - 01:41:46 WET

O colega Mourato esqueceu-se ?

Vem lá chumbo !!!
Agora é que finalmente parece haver sinal de mudança.
Esperamos pela influencia  SFI na F2 ou seja  boa propagação entre os 15m e os 6m
73's a todos
Matias

SPACE WEATHERCurrent conditions 

Solar windspeed: 420.7 km/secdensity: 0.6 protons/cm3explanation | more dataUpdated: Today at 0124 UT 

X-ray Solar Flares6-hr max: B1 2140 UT Mar24 24-hr: B4 0245 UT Mar24 explanation | more dataUpdated: Today at: 2355 UT 

Daily Sun: 24 Mar 08 

New sunspots 987 and 988 are growing very rapidly and pose a threat for B- and C-class solar flares. Credit: SOHO/MDI 

Sunspot number: 14 What is the sunspot number?Updated 23 Mar 2008 

Far side of the Sun: 

This holographic image reveals no sunspots on the far side of the sun. Image credit: SOHO/MDI 

Planetary K-indexNow: Kp= 1 quiet24-hr max: Kp= 1 quietexplanation | more data

Current Auroral Oval: 

Switch to: Europe, USA, New Zealand, AntarcticaCredit: NOAA/POESWhat is the auroral oval? 

Interplanetary Mag. FieldBtotal: 3.8 nTBz: 2.9 nT north explanation | more dataUpdated: Today at 0125 UT 

Coronal Holes: 

A solar wind stream flowing from the indicated coronal hole could reach Earth on or about March 29th. Credit:SOHO Extreme UV Telescope 

SPACE WEATHERNOAA Forecasts

Updated at: 2008 Mar 24 2203 UTC 

FLARE

0-24 hr

24-48 hr

CLASS M

05 %

05 %

CLASS X

01 %

01 %

Geomagnetic Storms:Probabilities for significant disturbances in Earth's magnetic field are given for three activity levels: active, minor storm, severe storm 

Updated at: 2008 Mar 24 2203 UTC 

Mid-latitudes 

0-24 hr

24-48 hr

ACTIVE

15 %

30 %

MINOR

05 %

15 %

SEVERE

01 %

10 %

High latitudes 

0-24 hr

24-48 hr

ACTIVE

20 %

35 %

MINOR

05 %

20 %

SEVERE

05 %

15 %

What's up in Space

March 24, 2008 

Where's Saturn? Is that a UFO--or the ISS? What's the name of that star? Get the answers from mySKY--a fun new astronomy helper from Meade.

TRIPLE FLYBY ALERT: Space shuttle Endeavour has just undocked from the ISS and the two spaceships are orbiting Earth in tandem. This sets the stage for a series of rare *triple* flybys. It's triple because three spacecraft are involved. First to appear is the ESA's Jules Verne cargo carrier flying 2000 km ahead of the ISS-Endeavour combo. Jules Verne is about as bright as a 1st magnitude star. Four minutes later, and even brighter, the shuttle and space station follow Jules Verne across the starry sky--a spectacular sight! US and Canadian readers can find out when to look using our new Simple Satellite Flybys tool.
NOT-SO-QUIET SUN: The sun may be at a low point of its 11-year cycle, but there was plenty of solar activity this weekend. On March 22nd, Texas astronomer Larry Alvarez looked through his his Coronado SolarMax90 and watched a "monster prominence" spew over the sun's southeastern limb:
Click to view a 2.2 MB movie
A day later on March 23rd, Easter Sunday, two new sunspots broke through the sun's surface and a dark magnetic filament appeared. Lesson: A 1027-ton nuclear explosion (a star) is never truly quiet. Readers with solar telescopes, prepare for action.
more images: from Cai-Uso Wohler of Bispingen, Germany; from Mark Walters of Powys, Wales, UK; from John Nassr of Baguio, the Philippines; from James Kevin Ty of Manila, the Philippines; from Pete Lawrence of Selsey, West Sussex, UK; from John Stetson of South Portland, Maine; from Mike Borman of Evansville, Indiana; from Erika Rix of Zanesville, Ohio
HAWAIIAN BLAST: Around 3:00 a.m. on March 19, 2008, Hawaii's Kilauea volcano erupted explosively for the first time since 1924. Volcano researcher Steve O'Meara (shown below in a self portrait) was one of the last persons to see Halemaumau, the volcano's summit crater, still intact before the big blast:

Steve left the summit around 11:00 p.m. on March 18th shortly after he felt the ground shake and heard solid rock crack beneath his feet. "It was eerie," he says. "After that my eyes were wide open." The explosion took most scientists by surprise, though Steve's wife and fellow researcher, Donna, called it right. After a heavy rain, she predicted an explosive event--and that's just what happened. A follow-up photo shows the volcano on the evening of March 19th, post-explosion, as it continued to erupt steam and dark ash.

Near-Earth Asteroids 

Potentially Hazardous Asteroids (PHAs) are space rocks larger than approximately 100m that can come closer to Earth than 0.05 AU. None of the known PHAs is on a collision course with our planet, although astronomers are finding new ones all the time. [comment] 

On March 24, 2008 there were 943 potentially hazardous asteroids. 

March 2008 Earth-asteroid encounters: 

Asteroid

Date(UT)
Miss Distance

Mag.

Size

2008 DH5

Mar. 5

7.1 LD

18

60 m

2008 EZ7

Mar. 9

0.4 LD

18

18 m

2008 ED8

Mar. 10

1.4 LD

12

64 m

2008 EF32

Mar. 10

0.2 LD

18

6 m

2008 EM68

Mar. 10

0.6 LD

18

12 m

1620 Geographos 

Mar. 17 

49 LD

13

3 km

2003 FY6

Mar. 21 

6.3 LD

15

145 m

Notes: LD means "Lunar Distance." 1 LD = 384,401 km, the distance between Earth and the Moon. 1 LD also equals 0.00256 AU. MAG is the visual magnitude of the asteroid on the date of closest approach.

Essential Links 

NOAA Space Weather Prediction Center

The official U.S. government bureau for real-time monitoring of solar and geophysical events, research in solar-terrestrial physics, and forecasting solar and geophysical disturbances.

Atmospheric Optics

The first place to look for information about sundogs, pillars, rainbows and related phenomena.

Solar and Heliospheric Observatory

Realtime and archival images of the Sun from SOHO.

Daily Sunspot Summaries

>From the NOAA Space Environment Center

Current Solar Images

from the National Solar Data Analysis Center