Earthquake in Northern Japan

Apr 27, 2026, 08:18
JapanScience
A2

Earthquake in Northern Japan

Introduction

A strong earthquake hit northern Japan on Monday morning.

Main Body

The earthquake happened near Sarabetsu on Hokkaido island. No people were hurt. No buildings broke. There was no big wave in the ocean. Last week, there was a bigger earthquake. Experts worried about a very large earthquake. They told people to be careful. This new earthquake was in a different place. It was not in the danger zone. The experts are not worried now.

Conclusion

The earthquake did not cause any damage. The special warning period will end on time.

Vocabulary Learning

careful (adj.)
cautious / paying attention小心
Example:Be careful when you walk on slippery roads.
danger (n.)
risk / potential harm危險
Example:The danger zone was marked with red flags.
hurt (v.)
injured / caused pain傷害
Example:He was hurt when the floor collapsed.
people (n.)
humans / individuals人們
Example:Many people were affected by the quake.
strong (adj.)
powerful / having a lot of force強烈
Example:The earthquake was very strong.

Sentence Learning

A strong earthquake hit northern Japan on Monday morning.
Time: The phrase 'on Monday morning' indicates when the event happened.時間: 'on Monday morning' 表示事件發生的時間。
The earthquake happened near Sarabetsu on Hokkaido island.
Prepositional: The phrase 'near Sarabetsu on Hokkaido island' uses prepositions to show location.介詞: 'near Sarabetsu on Hokkaido island' 以介詞表示地點。
The special warning period will end on time.
Future: The word 'will end' shows a future action.未來時: 'will end' 表示未來發生的動作。
No people were hurt.
Negation: The word 'No' negates the verb 'were hurt', showing that nothing bad happened.否定: 'No' 否定動詞 'were hurt'，表示沒有發生不好的事情。
B2

Earthquake Hits Northern Japan

Introduction

A magnitude 6.2 earthquake struck the northern region of Japan on Monday morning.

Main Body

The earthquake was centered 18 kilometers west of Sarabetsu on Hokkaido island, at a depth of 81 kilometers. The Japan Meteorological Agency (JMA) reported that there were no casualties or damage to buildings. Furthermore, the agency stated that the situation did not require a tsunami warning. This event occurred less than a week after a larger magnitude 7.7 offshore earthquake. That previous event had led to a warning about the increased possibility of a 'mega-quake'—an earthquake with a magnitude of 8.0 or higher—hitting the northeastern coast. As a result, authorities had been on high alert for significant seismic activity. Regarding the link between these two events, the JMA clarified that Monday's earthquake happened outside the specific warning zone for the mega-quake. Because of this difference in location, the agency confirmed that the special awareness period will end as originally planned.

Conclusion

The magnitude 6.2 earthquake caused no known damage and did not change the JMA's original schedule for the special awareness week.

Vocabulary Learning

alert (adj.)
watchful and ready to react警覺的
Example:Authorities were on high alert for seismic activity.
casualties (n.)
injured or killed people受傷或死亡的人
Example:The report mentioned no casualties.
offshore (adj.)
situated in the sea / located in the ocean海上
Example:The offshore earthquake triggered a tsunami warning.
planned (adj.)
decided in advance or scheduled預先計畫好的
Example:The special awareness period will end as originally planned.
specific (adj.)
clearly defined or identified明確的
Example:The JMA clarified the specific warning zone.

Sentence Learning

The earthquake was centered 18 kilometers west of Sarabetsu on Hokkaido island, at a depth of 81 kilometers.
Passive Voice: The verb phrase 'was centered' is in the passive form, showing that the earthquake's location is described rather than who performed the action.被動語態: 動詞短語 'was centered' 為被動語態，表示地震的位置被描述，而非誰執行動作。
That previous event had led to a warning about the increased possibility of a 'mega-quake'—an earthquake with a magnitude of 8.0 or higher—hitting the northeastern coast.
Relative Clause: The phrase 'with a magnitude of 8.0 or higher' is a relative clause that provides additional information about 'an earthquake'.關係子句: 'with a magnitude of 8.0 or higher' 是關係子句，為 'an earthquake' 提供額外資訊。
Because of this difference in location, the agency confirmed that the special awareness period will end as originally planned.
Linking Word: The phrase 'Because of' introduces a cause and connects the two clauses.連接詞: 'Because of' 引入原因，連接兩個子句。
The magnitude 6.2 earthquake caused no known damage and did not change the JMA's original schedule for the special awareness week.
Coordinating Conjunction: The sentence uses 'and' to link two independent clauses, showing that the earthquake both caused no damage and did not alter the schedule.並列連接詞: 'and' 將兩個獨立子句連接，表明地震既沒有造成損害，也未改變原定時間表。
C2

Seismic Activity Recorded in Northern Japan

Introduction

A magnitude 6.2 earthquake occurred in the northern region of Japan on Monday morning.

Main Body

The seismic event was centered 18 kilometers west of Sarabetsu, located on the island of Hokkaido, at a depth of 81 kilometers. According to the Japan Meteorological Agency (JMA), the tremor resulted in no reported casualties or structural damage. Furthermore, the agency determined that the conditions did not necessitate the issuance of a tsunami advisory. This event took place within a week of a magnitude 7.7 offshore earthquake, which had previously led to an advisory regarding an increased probability of a 'mega-quake'—defined as a seismic event of magnitude 8.0 or greater—affecting the northeastern coastal regions. Consequently, there was a period of heightened institutional awareness regarding potential large-scale seismic activity. Regarding the relationship between these two events, the JMA has clarified that the Monday tremor occurred outside the designated warning zone for the aforementioned mega-quake. As a result of this spatial distinction, the agency confirmed that the special awareness period will terminate according to the original schedule.

Conclusion

The magnitude 6.2 earthquake caused no known harm and did not alter the existing timeline for the JMA's special awareness week.

Vocabulary Learning

awareness (n.)
knowledge or perception of a situation認知
Example:Public awareness of seismic risks increased after the reports.
distinction (n.)
a difference or contrast between similar things or people區別
Example:The distinction between the two events was clear to the scientists.
institutional (adj.)
relating to an institution or institutions機構的
Example:The heightened institutional awareness was evident after the quake.
mega-quake (n.)
a very large earthquake, typically of magnitude 8.0 or greater超級地震
Example:The recent mega-quake caused widespread damage across the region.
terminate (v.)
to bring to an end or conclusion終止
Example:The special awareness period will terminate as scheduled.

Sentence Learning

The seismic event was centered 18 kilometers west of Sarabetsu, located on the island of Hokkaido, at a depth of 81 kilometers.
Passive Voice: The sentence uses the passive construction 'was centered' to emphasize the location rather than the agent, a common C2-level structure that shifts focus to the event itself.被動語態: 句子使用被動式「was centered」將焦點放在事件的位置，而非執行者，這是C2級語法常見的結構，強調事件本身。
According to the Japan Meteorological Agency (JMA), the tremor resulted in no reported casualties or structural damage.
Appositive: The abbreviation '(JMA)' in parentheses is an appositive that provides additional information about the Japan Meteorological Agency, illustrating the use of parentheses for clarifying acronyms.同位語: 括號中的 '(JMA)' 是同位語，補充說明日本氣象廠的縮寫，展示使用括號來說明首字母縮寫的技巧。
Furthermore, the agency determined that the conditions did not necessitate the issuance of a tsunami advisory.
Complement Clause: The clause 'that the conditions did not necessitate' functions as the object of 'determined', showcasing a subordinate clause introduced by 'that', a sophisticated C2 structure.補語子句: 子句 'that the conditions did not necessitate' 作為 'determined' 的賓語，展示以 'that' 引導的從屬子句，為C2級語法。
This event took place within a week of a magnitude 7.7 offshore earthquake, which had previously led to an advisory regarding an increased probability of a 'mega-quake'—defined as a seismic event of magnitude 8.0 or greater—affecting the northeastern coastal regions.
Relative Clause: The clause 'which had previously led to an advisory regarding an increased probability of a 'mega-quake'' modifies 'earthquake', demonstrating a restrictive relative clause that adds essential information.關係子句: 子句 'which had previously led to an advisory regarding an increased probability of a 'mega-quake'' 修飾 'earthquake'，展示限制性關係子句，提供必要資訊。
The magnitude 6.2 earthquake caused no known harm and did not alter the existing timeline for the JMA's special awareness week.
Coordination & Negation: The sentence combines two coordinated verbs 'caused' and 'did not alter', using a double negative construction to contrast harm and timeline changes, illustrating advanced coordination and negation.並列與否定: 句子結合兩個並列動詞 'caused' 與 'did not alter'，使用雙重否定結構對比傷害與時間表的變化，展示高級並列與否定技巧。