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備註請放最後面 違者新聞文章刪除

1.媒體來源:

外媒        curiosmos

2.記者署名:

Ivan Petricevic

3.完整新聞標題:

Earth’s Magnetic North Pole Has Moved Again — Here’s What You Need to Know

磁北極再次變動！定位現況已更新

4.完整新聞內文:

https://imgur.com/OCSZTmt.jpg

Earth’s Magnetic North Pole Has Moved Again — Here’s What You Need to Know
Ivan Petricevic
Posted on December 20, 2024

One key highlight of this release is the continued movement of the magnetic
north pole, which is edging closer to Russia.

伊凡彼得里切維奇
發表於 2024 年 12 月 20 日

這次發布的一個關鍵亮點是磁北極的持續移動，它正逐漸靠近俄羅斯。

The Earth’s magnetic north pole has a new position, according to the World
Magnetic Model (WMM) update released this week. This critical update,
designed to track the ever-shifting magnetic fields of our planet, will
remain valid until late 2029. One key highlight of this release is the
continued movement of the magnetic north pole, which is edging closer to
Russia—a trend that has captured the attention of scientists and navigation
experts alike.



Magnetic North vs. True North: What’s the Difference?

Understanding the difference between Earth’s geographic North Pole and
magnetic north is vital. The geographic North Pole, often called “True North,
” is a fixed point at 90°  North latitude where the planet’s axis of
rotation intersects the surface. In contrast, the magnetic north pole is far
from stationary, as its position depends on the dynamic flow of molten metals
within Earth’s outer core.

磁北與真北：有什麼差別？



These conductive, liquid metals create electric currents as they move, driven
by the Earth’s rotation and internal heat. This motion generates the
magnetic field that defines our planet’s two poles. However, unlike the
steady geographic North Pole, the magnetic north pole shifts gradually,
influenced by the complex behavior of Earth’s core.



Why Does the New Model Matter?

The WMM is a critical tool for technologies that rely on Earth’s magnetic
field, including GPS systems and satellite-based navigation. The 2025 update
includes the World Magnetic Model High Resolution (WMMHR2025), which provides
improved spatial resolution of approximately 300 kilometers at the equator—
far more precise than the standard model’s 3,300-kilometer resolution. This
increased accuracy ensures reliable navigation for a variety of industries,
from aviation to shipping.

為什麼新模型很重要？



The movement of the magnetic north pole has been accelerating in recent
decades, traveling approximately 2,250 kilometers from Canada toward Siberia
since the 1830s. Between 1990 and 2005, its speed surged from less than 15
kilometers per year to around 50 to 60 kilometers annually. However, in the
past five years, scientists observed a sudden deceleration to 35 kilometers
per year—a phenomenon unlike anything previously recorded.



“The WMM is officially released today, ensuring users can have the most
up-to-date information so they can continue to navigate accurately for the
next five years,” said Dr. William Brown, global geomagnetic field modeler
at the British Geological Survey (BGS).

As scientists continue to monitor these changes, updates like WMMHR2025 will
remain vital for understanding and adapting to Earth’s shifting magnetic
landscape. The data not only supports everyday technologies but also
contributes to ongoing research into the complex inner workings of our planet.

英國地質調查局全球地磁場建模：「WMM 今天正式發布，確保用戶能夠獲得最新信息，以
便他們能夠在未來五年內繼續準確導航。」師 William Brown 博士表示



5.完整新聞連結 (或短網址)不可用YAHOO、LINE、MSN等轉載媒體:

https://reurl.cc/04vXZY

6.備註:

丸子，地球被尼比魯拉住了。2025磁極一倒轉太平洋板塊就要裂開了。

GG

https://youtu.be/4G37nPK-vlY?si=ddEtyU8j1b_KfBNZ

2024年有兩波北半球星際人道救援行動，夏天先去天津接人，冬天去美東接人。

https://youtu.be/jJei7ctSgfU?si=6J6F6dWLWY-kVpAs

https://youtu.be/J_SislqiLgw?si=ixf0qVWq_FybocRt

還沒走的也走不了了


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※ 作者: STAV72 2024-12-21 14:36:43
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