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Unusual Animal Behavior Preceding the 2011 Earthquake off the Pacific Coast of Tohoku, Japan: A Way to Predict the Approach of Large Earthquakes.

Yamauchi H, Uchiyama H, Ohtani N, Ohta M - Animals (Basel) (2014)

Bottom Line: In the results, 236 of 1,259 dog owners and 115 of 703 cat owners observed UABs in their pets, with restless behavior being the most prominent change in both species.Interestingly, cow milk yields in a milking facility within 340 km of the epicenter decreased significantly about one week before the EQ.However, cows in facilities farther away showed no significant decreases.

View Article: PubMed Central - PubMed

Affiliation: Department of Animal Science and Biotechnology, Azabu University Graduate School of Veterinary Science, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan. hiroyuki.yamauchi19@gmail.com.

ABSTRACT
Unusual animal behaviors (UABs) have been observed before large earthquakes (EQs), however, their mechanisms are unclear. While information on UABs has been gathered after many EQs, few studies have focused on the ratio of emerged UABs or specific behaviors prior to EQs. On 11 March 2011, an EQ (Mw 9.0) occurred in Japan, which took about twenty thousand lives together with missing and killed persons. We surveyed UABs of pets preceding this EQ using a questionnaire. Additionally, we explored whether dairy cow milk yields varied before this EQ in particular locations. In the results, 236 of 1,259 dog owners and 115 of 703 cat owners observed UABs in their pets, with restless behavior being the most prominent change in both species. Most UABs occurred within one day of the EQ. The UABs showed a precursory relationship with epicentral distance. Interestingly, cow milk yields in a milking facility within 340 km of the epicenter decreased significantly about one week before the EQ. However, cows in facilities farther away showed no significant decreases. Since both the pets' behavior and the dairy cows' milk yields were affected prior to the EQ, with careful observation they could contribute to EQ predictions.

No MeSH data available.


Related in: MedlinePlus

The epicenter of the 2011 earthquake off the Pacific coast of Tohoku, Japan. Black circles represent the approximate locations of three institutes with dairy cow milking facilities used in this study. The lower table shows the distances from the earthquake’s epicenter and approximate intensity on the Japan Meteorological Agency (JMA) seismic intensity scale of the three institutes.
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animals-04-00131-f001: The epicenter of the 2011 earthquake off the Pacific coast of Tohoku, Japan. Black circles represent the approximate locations of three institutes with dairy cow milking facilities used in this study. The lower table shows the distances from the earthquake’s epicenter and approximate intensity on the Japan Meteorological Agency (JMA) seismic intensity scale of the three institutes.

Mentions: On 11 March 2011, at 14:46 JST (05:46 UTC), a megathrust EQ with Mw 9.0 occurred in the Northwestern Pacific Ocean (138.104°N, 142.861°E) at a shallow depth of 24 km, which is formally named as “the 2011 off the Pacific coast of Tohoku Earthquake” (Tohoku EQ, Figure 1). This EQ occurred on or near the subduction zone plate boundary between the Pacific and North America plates. There was a foreshock of Mw 7.3 on 9 March 2011, at 11:45 JST (02:45 UTC), two days before the main shock.


Unusual Animal Behavior Preceding the 2011 Earthquake off the Pacific Coast of Tohoku, Japan: A Way to Predict the Approach of Large Earthquakes.

Yamauchi H, Uchiyama H, Ohtani N, Ohta M - Animals (Basel) (2014)

The epicenter of the 2011 earthquake off the Pacific coast of Tohoku, Japan. Black circles represent the approximate locations of three institutes with dairy cow milking facilities used in this study. The lower table shows the distances from the earthquake’s epicenter and approximate intensity on the Japan Meteorological Agency (JMA) seismic intensity scale of the three institutes.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4494383&req=5

animals-04-00131-f001: The epicenter of the 2011 earthquake off the Pacific coast of Tohoku, Japan. Black circles represent the approximate locations of three institutes with dairy cow milking facilities used in this study. The lower table shows the distances from the earthquake’s epicenter and approximate intensity on the Japan Meteorological Agency (JMA) seismic intensity scale of the three institutes.
Mentions: On 11 March 2011, at 14:46 JST (05:46 UTC), a megathrust EQ with Mw 9.0 occurred in the Northwestern Pacific Ocean (138.104°N, 142.861°E) at a shallow depth of 24 km, which is formally named as “the 2011 off the Pacific coast of Tohoku Earthquake” (Tohoku EQ, Figure 1). This EQ occurred on or near the subduction zone plate boundary between the Pacific and North America plates. There was a foreshock of Mw 7.3 on 9 March 2011, at 11:45 JST (02:45 UTC), two days before the main shock.

Bottom Line: In the results, 236 of 1,259 dog owners and 115 of 703 cat owners observed UABs in their pets, with restless behavior being the most prominent change in both species.Interestingly, cow milk yields in a milking facility within 340 km of the epicenter decreased significantly about one week before the EQ.However, cows in facilities farther away showed no significant decreases.

View Article: PubMed Central - PubMed

Affiliation: Department of Animal Science and Biotechnology, Azabu University Graduate School of Veterinary Science, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan. hiroyuki.yamauchi19@gmail.com.

ABSTRACT
Unusual animal behaviors (UABs) have been observed before large earthquakes (EQs), however, their mechanisms are unclear. While information on UABs has been gathered after many EQs, few studies have focused on the ratio of emerged UABs or specific behaviors prior to EQs. On 11 March 2011, an EQ (Mw 9.0) occurred in Japan, which took about twenty thousand lives together with missing and killed persons. We surveyed UABs of pets preceding this EQ using a questionnaire. Additionally, we explored whether dairy cow milk yields varied before this EQ in particular locations. In the results, 236 of 1,259 dog owners and 115 of 703 cat owners observed UABs in their pets, with restless behavior being the most prominent change in both species. Most UABs occurred within one day of the EQ. The UABs showed a precursory relationship with epicentral distance. Interestingly, cow milk yields in a milking facility within 340 km of the epicenter decreased significantly about one week before the EQ. However, cows in facilities farther away showed no significant decreases. Since both the pets' behavior and the dairy cows' milk yields were affected prior to the EQ, with careful observation they could contribute to EQ predictions.

No MeSH data available.


Related in: MedlinePlus