Itinerary and Structures Observed - Tohoku, Japan Earthquake and Tsunami of 2011 - page 39

TOWN LOCATION STRUCTURE TOP OF

STRUCTURE
ELEV.
(M)

APPROX.
RUN‐UP
ELEV.
(M)

DESCRIPTION DAMAGE OBSERVED

OMOTO PORT N 39.849190

E 141.973931

COASTAL DIKE
AND
BREAKWATER

n.d. +20 315 M LONG X 13

M WIDE
CONCRETE DIKE
WITH PACKED
EARTH CORE; 30
TON TETRAPODS

3.5 M HIGH X 56 M LONG SECTION
OF WALL BREACHED; SCOUR
LANDWARD OF DIKE W/LITTLE
DAMAGE

TARO N 39.735192

E 141.971916

MIYATO
BRIDGE
(1969);
TSUNAMI
WALLS

+10 +20

(SOUTH)
+28
(NORTH)
+6
(INSIDE)

CONCRETE WALLS
FORM AN "X" IN
FRONT OF TOWN
BRIDGE WAS 32 M
LONG X 9 M WIDE
WITH FOUR 0.3 M
WIDE X 1 M DEEP
STRINGERS

CONCRETE BUILDINGS ONLY
STRUCTURES LEFT STANDING IN
TOWN

MIYAKO PORT N 39.643819

E 141.968491

PORT AREA n.a. +8 PILE SUPPORTED

PLATFORMS

DAMAGE TO DOCKSIDE BUILDINGS
AND WHAREHOUSES

KANEHAMA
(TSUGARUISHI)

N 39.585581
E 141.944907

WATER GATE
AND DIKE

+10 +12 FLOOD GATE

LOCATED 10 KM
FROM MOUTH OF
BAY

OVERTOPPED

OTSUCHI N 39.352929

E 141.932572

TSUNAMI
WALL

+5 +15 ‐ +19

(OUTSIDE)
+8
(INSIDE)

CONCRETE
SEAWALL

TOPPLED 3‐STORY BUILDINGS;
EXTENSIVE FIRE DAMAGE; SCOUR
54 M BREACH IN WALL

RYOSHI STATION N 39.307887
E 141.890466

BREAKWATER EMERGENT
n.d

+18 CONCRETE

CAISSONS

FAILED CAISSONS