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.
Kozagawa Town earthquake and Shindo history in 2017
古座川町
This annual view includes only earthquakes from 2017 for which stations associated with Kozagawa Town recorded Shindo.
Data period: 1 January–31 December 2017Data period: 1 January–31 December 2017
In 2017, stations associated with Kozagawa Town reported local Shindo for 4 earthquakes. The highest local level recorded that year was Shindo 1.
Observed events42017
Highest local Shindo12017
Data period: 1 January–31 December 2017 · 4 observed earthquakes
2017 · Clear filtersObservation history · 2017
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: Feb 6, 2015
All yearsObserved events by year
Choose a year to update the event history and local Shindo distribution.
2017
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 2017
Observation history · 2017
4 observed earthquakes
- 震度1Sep 21, 2017, 01:02 JSTNorthern Wakayama PrefectureShindo in this place: 1 · Event maximum Shindo: 2M4.060 km
- 震度1Sep 17, 2017, 08:28 JSTNara PrefectureShindo in this place: 1 · Event maximum Shindo: 2M3.960 km
- 震度1Jun 25, 2017, 07:02 JSTSouthern Nagano PrefectureShindo in this place: 1 · Event maximum Shindo: 5+M5.70 km
- 震度1Apr 13, 2017, 02:15 JSTSouthern Wakayama PrefectureShindo in this place: 1 · Event maximum Shindo: 3M3.830 km
Ground & J-SHIS
The context below uses the place's full available history and reference models; it is not part of the 2017 statistics.
Local seismic profile
Where the shaking usually comes from
Source regions of earthquakes observed here, ordered by the number of reports.
3
Southern Wakayama Prefecture和歌山県南部
133
Kiisuido Strait紀伊水道
94
Nara Prefecture奈良県
81
Northern Wakayama Prefecture和歌山県北部
82
Off the south Coast of Wakayama Prefecture和歌山県南方沖
52
Southern Tokushima Prefecture徳島県南部
3Reference model · not a forecast J-SHIS (NIED) · 250 m · 5035254622
J-SHIS / NIEDGround conditions near an observation station
J-SHIS data for the 250 m mesh containing 古座川町峯.
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 33% lower 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) · A30424
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.
J-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 Explained: What Levels 0–7 Mean
Shindo is Japan’s earthquake intensity scale. See what shaking each level means, from 0 to 7, and why a local Shindo reading 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 →