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Takemikazuchi

Takemikazuchi is a earth science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Takemikazuchi rather than just read about it. In short: Takemikazuchi (建御雷/武甕槌) is a deity in Japanese mythology, considered a god of thunder and a sword god. He also competed in what is considered the first sumo wrestling match recorded in history.

Takemikazuchi — main illustration
Takemikazuchi — illustration

Key takeaways

  • Takemikazuchi belongs to earth science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Takemikazuchi to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Takemikazuchi from memory before moving on to harder problems.

Reference excerpt

Takemikazuchi (建御雷/武甕槌) is a deity in Japanese mythology, considered a god of thunder and a sword god. He also competed in what is considered the first sumo wrestling match recorded in history. He is otherwise known as "The kami of Kashima" (Kashima-no-kami), the chief deity revered in the Kashima Shrine at Kashima, Ibaraki (and all other subsidiary Kashima shrines). In the namazu-e or catfish prints of the Edo period, Takemikazuchi/Kashima is depicted attempting to subdue the Namazu, a giant catfish supposedly dwelling at the kaname-ishi (要石; 'pinning rock') of the Japanese landmass and causing its earthquakes.

Forms of the name In the Kojiki, the god is known as Takemikazuchi-no-o no kami (建御雷之男神 – "Brave Mighty Thunderbolt Man"). He also bears the alternate names Takefutsu-no-kami (建布都神) and Toyofutsu-no-kami (豊布都神).

Birth of the gods In the Kamiumi ("birth of the gods") episodes of the Kojiki, the god of creation Izanagi severs the head of the fire deity Kagu-tsuchi, whereupon the blood from the sword (Totsuka-no-Tsurugi) splattered the rocks and gave birth to several deities. The blood from the sword-tip engendered one triad of deities, and the blood from near the base of the blade produced another triad that included Takemikazuchi (here given as "Brave-Awful-Possessing-Male-Deity" by Chamberlain). The name of the ten-fist sword wielded by Izanagi is given postscripturally as Ame-no-ohabari, otherwise known as Itsu-no-ohabari. (Accordingly, Takemikazuchi is referred in some passages as the child of Itsu-no-o habari. See next section). The Nihon Shoki gives the same episode in the same general gist, albeit more vaguely regarding this deity.

Quelling of the Middle Country

In the episodes where the gods of the heavenly plains (Takama-ga-hara) contemplate and execute the conquest of the terrestrial world known as Middle Country (Ashihara no Nakatsukuni), Takemikazuchi is one of the chief delegates sent down to subjugate the terrestrial deities (kuni-tsu-kami). In the Kojiki (Conquest of Izumo chapter), the heavenly deities Amaterasu and Takamusubi decreed that either Takemikazuchi or his father Itsu-no-ohabari ("Heaven-Point-Blade-Extended") must be sent down for the conquest. Itsu-no-ohabari (who appeared previously as a ten-fist sword) here has the mind and speech of a sentient god, and he volunteered his son Takemikazuchi for the subjugation campaign. Takemikazuchi was accompanied by Ame-no-torifune "Deity Heavenly-Bird-Boat" (which may be a boat as well as being a god) The two deities reached the land of Izumo at a place called "the little shore of Izasa/Inasa" (伊耶佐小浜), and stuck a "ten-fist sword" (Totsuka-no-Tsurugi) upside-down on the crest of the wave, and sat atop it, while demanding the local god Ōkuninushi to relinquish the Izumo province over to them. Ōkuninushi replied he would defer the decision to his child deities, and would follow suit in their counsel. One of them, Kotoshironushi or Yae-Kotoshironushi ("Eight-Fold-Thing-Sign-Master") who had been out fishing, was easily persuaded to forfeit his authority and retire into seclusion. The other, Takeminakata would not concede without testing his feats of strength against Takemikazuchi. When the challenger grabbed Takemikazuchi's hand it turned as if into an icicle and then a sword, making him cringe. Takemikazuchi then grabbed Takeminakata's hand, crushing it like a young reed. The challenger, chased to the sea near Suwa of Shinano (科野国之州羽海; in Kojiki), asked for clemency on his life, promising to hold himself in exile in that region. In this way, the defeated Takeminakata became chief deity of the Suwa Grand Shrine in Nagano Prefecture. The hand-to-hand bout between the two deities is considered the mythical origin of sumo wrestling. The Nihon Shoki names a different partner for Takemikazuchi in the task of conquering lands of the Middle Country. That partner is his brother Futsunushi (a god who goes unmentioned in the Kojiki in the gods' birth episode as well as this episode). Just as Takemikazuchi was chief deity of Kashima Shrine, this Futsunushi was the chief of the Katori Shrine. In the early centuries, when the Yamato rulers campaigned in the Kantō and Tōhoku regions, they would pray to these two war gods for military success, so that subsidiary shrines of the two gods are scattered all over these regions. The enshrinement of the deities at Kashima and Katori is mentioned briefly in the Kogo Shūi (807). The Nihon Shoki account has other discrepancies. The beach where the gods stuck the "ten-fist sword" is here called "Itasa". The chief god of Izumo (Ōkuninushi) is called by the name of Ōanamuchi. The wrestling match with Takeminakata is missing. In the end, Ōanamuchi/Ōkuninushi gave sign of his obedience by presenting the broad spear he used to pacify the land with. Jumping to a later passage (after digressing on other matters), the Nihon Shoki retells Takemikazuchi and Futsunushi's landing on the beach, this time stating that Ōanamuchi verbally expressed resistance to relinquish his rule, until the heavenly gods promised him palatial residence to recompense his abdication. Appended to the two passages is the mention of a star deity named Amatsu-Mikaboshi who resisted till the end, and whom Takemikazuchi and Futsunushi were particularly eager to vanquish. The latter passage states that the being who subdued the star god, referred to as Iwai no nushi (斎の大人) is enshrined at Katori, hinting that it might be Futsunushi. However, the earlier passage says a god named Takehazuchi was the vanquisher of the star god.

Emperor Jimmu's conquest of the East

… excerpt ends here. Continue reading the full article.

Illustrations

Takemikazuchi illustration
Takemikazuchi: Earthquake-warding song (a namazu-e woodblock pamphlet, October 1855). The figure holding down the Namazu (mythical catfish) is believed to be Takemikazuchi.[1]
Earthquake-warding song (a namazu-e woodblock pamphlet, October 1855). The figure holding down the Namazu (mythical catfish) is believed to be Takemikazuchi.[1]
Takemikazuchi: Takemikazuchi pins down a catfish (namazu) with a rock (kaname-ishi) to prevent earthquakes, 1855
Takemikazuchi pins down a catfish (namazu) with a rock (kaname-ishi) to prevent earthquakes, 1855
Takemikazuchi: Another Namazu-e depicting Takemikazuchi riding the catfish. Above is a depiction of the kaname-ishi, the rock used to subdue the fish
Another Namazu-e depicting Takemikazuchi riding the catfish. Above is a depiction of the kaname-ishi, the rock used to subdue the fish

Worked examples

Example 1 — a first encounter with Takemikazuchi

Start with the simplest possible case. Write down what Takemikazuchi claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In earth science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Takemikazuchi before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Takemikazuchi ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Takemikazuchi

In research
Takemikazuchi appears in earth science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Takemikazuchi in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Takemikazuchi is common in secondary-school and first-year university syllabi. It links to neighbouring topics Amatsukami, Earthquake myths, Japanese gods, so understanding it makes those chapters shorter.
In everyday life
Look for Takemikazuchi outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Takemikazuchi in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Takemikazuchi means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Takemikazuchi out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Takemikazuchi in simple terms?

Takemikazuchi (建御雷/武甕槌) is a deity in Japanese mythology, considered a god of thunder and a sword god. He also competed in what is considered the first sumo wrestling match recorded in history.

Why does Takemikazuchi matter?

Because it connects several earth science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Takemikazuchi?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Takemikazuchi.

Tags

  • Amatsukami
  • Earthquake myths
  • Japanese gods
  • Natural disasters in warfare
  • Thunder gods
  • War gods

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