A landform class assigned to the whole 250 m mesh and used to estimate AVS30. The name alone does not determine safety, and it is model data rather than a borehole survey at the station.
Miyakojima City earthquake and Shindo history in 2015
宮古島市
This annual view includes only earthquakes from 2015 for which stations associated with Miyakojima City recorded Shindo.
Data period: 1 January–31 December 2015Data period: 1 January–31 December 2015
In 2015, stations associated with Miyakojima City reported local Shindo for 4 earthquakes. The highest local level recorded that year was Shindo 3.
Observed events42015
Highest local Shindo32015
Data period: 1 January–31 December 2015 · 4 observed earthquakes
2015 · Shindo 3+ · Clear filtersObservation history · 2015
This history counts earthquakes observed at stations in the place, not earthquakes whose epicentre lies inside its boundary. Counts can change as stations are updated and older or corrected observations are added.
First observation: Jan 16, 2015
All yearsObserved events by year
Choose a year to update the event history and local Shindo distribution.
2015
All ShindoShindo observed in this place
The highest reading from stations in this place, not the maximum Shindo of the whole event.
Data period: 1 January–31 December 2015
Observation history · 2015
4 observed earthquakes
- 震度3Oct 13, 2015, 09:18 JSTAdjacent Sea of Miyakojima IslandShindo in this place: 3 · Event maximum Shindo: 3M5.070 km
- 震度3Aug 11, 2015, 12:31 JSTAdjacent Sea of Miyakojima IslandShindo in this place: 3 · Event maximum Shindo: 3M4.420 km
- 震度3Mar 14, 2015, 22:48 JSTAdjacent Sea of Miyakojima IslandShindo in this place: 3 · Event maximum Shindo: 3M4.450 km
- 震度3Mar 6, 2015, 08:59 JSTAdjacent Sea of Miyakojima IslandShindo in this place: 3 · Event maximum Shindo: 3M4.450 km
Ground & J-SHIS
The context below uses the place's full available history and reference models; it is not part of the 2015 statistics.
Local seismic profile
Where the shaking usually comes from
Source regions of earthquakes observed here, ordered by the number of reports.
4
Adjacent Sea of Miyakojima Island宮古島近海
2103
Off the northwest Coast of Miyakojima Island宮古島北西沖
402
Off the northwest Coast of Ishigakijima Island石垣島北西沖
83
Adjacent Sea of Ishigakijima Island石垣島近海
72
Adjacent Sea of Yonagunijima Island与那国島近海
72
the vicinity of Taiwan台湾付近
3Reference model · not a forecast J-SHIS (NIED) · 250 m · 3725125214
J-SHIS / NIEDGround conditions near an observation station
J-SHIS data for the 250 m mesh containing 宮古島市平良下里.
How to read these values
The average speed of an S-wave through the upper 30 metres. A lower value generally indicates softer material that can amplify shaking more. J-SHIS uses this value to estimate the amplification shown to the right. It is not predicted Shindo.
For the same incoming wave, local ground conditions may make peak-motion velocity at the surface about 12% higher than at engineering bedrock (Vs = 400 m/s). This value describes motion velocity—it does not multiply magnitude or forecast ground acceleration.
Ground conditions can change over short distances. These values do not rate the whole place or the safety of a building, and they cannot predict an earthquake. Source: J-SHIS (NIED), V4 model; processed for presentation by JISHINDESU.
Reference model · not a forecast J-SHIS (NIED) · A47214
J-SHIS / NIEDEarthquake scenarios affecting this place
Official J-SHIS models ranked for their potential impact on this municipality.
#1 means the model ranks highest in the J-SHIS result for this place under the same settings. It is not a ranking of which earthquake will happen next.
Magnitude on a card describes the size of the whole earthquake model, not the Shindo expected here. Local shaking also depends on distance, depth and ground conditions.
#1Major active faultMiyako-jima fault zone (Western part)宮古島断層帯西部
Modelled magnitude: M6.4
Read about this model #2Major active faultMiyako-jima fault zone (Central part)宮古島断層帯中部Modelled magnitude: M6.7
Read about this modelJ-SHIS 2020 model, 30-year period and Shindo 6-lower threshold. This is not a prediction of a particular earthquake. Source: J-SHIS (NIED); processed for presentation by JISHINDESU.
Local seismic profile
Nearby places
Municipalities nearest to the representative station position.
Understand local Shindo in context
Guides to this place’s history, seismic intensity and notification tools.
8 min readJapan’s Shindo Scale: Earthquake Intensity Levels 0–7
Learn what Japan’s Shindo earthquake intensity scale measures, what levels 0, 5 Lower, 5 Upper and 7 mean, and why Shindo is different from magnitude.
Read guide →10 min readHow to use the JISHINDESU interactive mapA guide to the redesigned map panel: adding and switching places, ten years of history, filters, local Shindo readings, sharing and notifications.
Read guide →6 min readAre earthquakes becoming more frequent in Japan?How to compare earthquake counts fairly—and why a few active days do not prove a lasting increase.
Read guide →4 min readAway from home? Monitor earthquakes in your Japanese townUse home as the reference point and receive notifications without an account when a station within the selected radius reports your chosen Shindo level.
Read guide →