Earthquakes Recorded in Las Vegas Valley and Western United States

拉斯維加斯谷及美國西部記錄到地震


Introduction

A moderate earthquake hit near Summerlin, Nevada, on June 4, happening at the same time as several other seismic events across the western United States.

6月4日,內華達州 Summerlin 附近發生了一次中型地震,與此同時,美國西部其他地區也發生了幾次地震。

Main Body

The earthquake in the Las Vegas Valley started shortly before 2:00 PM. The center of the quake was about 7 miles northwest of Summerlin South at a shallow depth of 6 kilometers. The U.S. Geological Survey (USGS) estimated the magnitude between 3.8 and 4.1. People across the city, including those in Henderson and Pahrump, felt the tremors. Most reports described the shaking as Level IV on the Modified Mercalli Scale, which means it was noticeable indoors, causing parked cars to shake and household objects to rattle.

拉斯維加斯谷的地震發生在下午 2 點前不久。震央位於 Summerlin South 西北約 7 英哩處,深度僅 6 公里的淺層地震。美國地質調查局 (USGS) 估計震級在 3.8 至 4.1 之間。全市的人,包括位於 Henderson 和 Pahrump 的居民都感受到了震動。大多數報告將其描述為改良麥卡利烈度等級 (Modified Mercalli Scale) 的 IV 級,這意味著在室內能明顯感覺到,導致停泊的車輛搖晃,家中物品震動。

Geologists explained that this event happened because of Nevada's location in the Basin and Range Province. In this region, the Earth's crust is slowly stretching, which has created a wide network of faults. Consequently, Nevada is one of the most seismically active states in the country, although its activity is more spread out than the concentrated movement seen along California's San Andreas Fault.

地質學家解釋,這次事件是因為內華達州位於盆地與山脈區 (Basin and Range Province)。在這個區域,地殼正在緩慢伸展,從而形成了廣泛的斷層網絡。因此,內華達州是美國地震最活躍的州之一,儘管其活動較為分散,不像加州聖安地列斯斷層 (San Andreas Fault) 那樣集中。

At the same time, other seismic activity was recorded in the western U.S. In Northern California, the Mendocino Triple Junction experienced several offshore earthquakes, including a magnitude 5.7 event near McKinleyville and a 5.1 event west of Petrolia. Furthermore, a tremor was recorded near Pistol River, Oregon. Despite the size of these earthquakes, no tsunami warnings were issued and no serious damage was reported.

與此同時,美國西部其他地區也記錄到了地震活動。在北加州,門多西諾三接點 (Mendocino Triple Junction) 發生了幾次離岸地震,包括 McKinleyville 附近的一次 5.7 級以及 Petrolia 西側的一次 5.1 級。此外,俄勒剛州的 Pistol River 附近也記錄到了震動。儘管這些地震規模較大,但並未發布海嘯警告,也沒有報告嚴重損毀。

Conclusion

No injuries or major damages were reported after the Nevada earthquake, although the USGS stated there is a moderate chance of aftershocks.

內華達州地震後未接獲人員傷亡或重大損毀報告,但 USGS 表示有中等機率會發生餘震。

Vocabulary Learning

⚡ The 'Connecting' Secret: Moving Beyond Simple Sentences

At the A2 level, we usually write short, choppy sentences: "The earthquake happened. It was in Nevada. People felt it."

To reach B2, you must start using Logical Connectors. These are words that glue your ideas together, showing how one thought leads to another. Look at these three 'power moves' from the text:

1. The 'Result' Bridge: Consequently

Instead of saying "The crust is stretching. So, Nevada has earthquakes," the text uses Consequently.

  • How to use it: Use this when the second part of your sentence is a direct result of the first.
  • B2 Upgrade: "I didn't study for the exam; consequently, I failed."

2. The 'Addition' Bridge: Furthermore

A2 students use "and" or "also" for everything. B2 students use Furthermore to add a new, important piece of information to a list.

  • How to use it: Use it at the start of a sentence to add more evidence or a new fact.
  • B2 Upgrade: "The hotel was very expensive. Furthermore, the service was terrible."

3. The 'Contrast' Bridge: Despite

This is the hardest jump. Instead of saying "The earthquakes were big, but there was no damage," the text uses Despite.

  • The Magic Rule: Despite must be followed by a noun or a verb-ing, never a full sentence with a subject and verb.
  • Analysis: "Despite the size of these earthquakes [Noun Phrase], no damage was reported."
  • B2 Upgrade: "Despite the rain, we went for a walk." (NOT: Despite it was raining).

💡 Quick Summary for your growth:

  • A2: and / but / so
  • B2: Furthermore / Despite / Consequently

Vocabulary Learning

seismic (adj.)
relating to earthquakes or seismic activity
Example:The seismic waves from the earthquake were felt across the valley.
crust (n.)
the outermost solid layer of the Earth
Example:The Earth's crust is the outermost layer.
fault (n.)
a fracture in the Earth's crust where movement has occurred
Example:She studied the fault lines along the coastline.
province (n.)
a region or area, especially one with a particular characteristic
Example:The Basin and Range Province stretches across Nevada.
stretching (v.)
extending or pulling something to a longer length
Example:The tectonic plates are slowly stretching the land.
network (n.)
a group or system of connected people or things
Example:The region has a network of fault lines.
offshore (adj.)
located or occurring in the sea, away from the coast
Example:Offshore earthquakes can trigger tsunamis.
tsunami (n.)
a large sea wave caused by an earthquake or other disturbance
Example:The tsunami warning was issued after the quake.
aftershocks (n.)
smaller earthquakes that follow a main shock
Example:Aftershocks can continue for weeks after the main quake.
magnitude (n.)
a measure of the size or energy of an earthquake
Example:The earthquake had a magnitude of 4.1.
modified (adj.)
altered or adapted from its original form
Example:The Modified Mercalli Scale measures shaking intensity.
mercalli (adj.)
relating to the Modified Mercalli Intensity Scale used by seismologists
Example:The Mercalli scale is used by seismologists to assess shaking.
shallow (adj.)
not deep; close to the surface
Example:A shallow earthquake occurs close to the surface.
moderate (adj.)
of average size, amount, or intensity
Example:The earthquake was moderate, not severe.
Practice B2 words in a crossword