Nagoya Port

Information on seawall for storm surge

2014 Oct 29

Chubu Regional Development Bureau

Nagoya Port office

History of Development

◇1601Atsuta is designated as the 41th post station among the 53 Stations of the Tokaido (Miyanowatashi).

◇1907Atsuta Port is renamed as Nagoya Port. Designated as treaty port (port opening).

◇1930The Nakagawa canal line and North branch line

commenced operation.

◇1951Designated as a "special major port". The Nagoya Port Management Union is established.

◇1959Hit by Ise Bay typhoon.Construction of seawall for storm surge (1962 - 1964).

◇1968The cell-guide equipped container ship "Hakone Maru" enters Nagoya Port for the first time.

◇1998Opening of the three Meiko bridges collectively known as "Meiko Triton" and the Ise Wangan roads.

◇2011"Special Major Port" is renamed as "International Hub Port“.Selected as International Strategic Bulk Port (grain commodities).

Atsuta Shrine Atsuta Port

The cell-guide equipped container ship "Hakone Maru" (Kinjo Pier)

Opening of the Meiko Toriton

Construction of seawall for storm surge

1

A raft transporting wood logs enters the Nakagawa canal with wharf ahead located downstream

Miyanowatashi(The place of origin of Nagoya Port)

Until 1900 1901 to 1950


2

Chuo Pier(Current: Garden Pier)

Nagoya Port aerial view

1951 to 1960 1961 to 1970


3

1981 to 19901971 to 1980


4

Tobishima Pier(Container logistics)

Tokai Motohama Pier(Iron and steel commodities terminal)

Minamihama Pier（LNGTerminal・Oil commodities terminal）

Shinpo Pier(Terminal for

loading automobiles)

Nabeta Pier(Container logistics)

Kitahama Pier(Grains and oil commodities terminal)


5

Kinjo Pier(Terminal for

loading automobiles)

1991 to present day

Damages caused by the Ise Bay typhoon

Typhoon hits Ise Bay on 26 Sep 1959, and the waves reaches a height of more than1m above the highest tides experienced so far in Nagoya Port.

The damage was enlarged by the outflow of logs, and certain regions remainflooded for more than 4 months.

Driftwood that were washed into residential apartments during the Ise Bay typhoon (Near Meitetsu Daito machi station)

Location of breach in seawall downstream of the Shonai River in Minato district of Nagoya city

Flood status (flood period)

The seawall for storm surge (development costs: 11 billion yen) was built by the government between1962 to 1964, after sustaining damage from the Ise Bay typhoon.

The breakwater stretches a total length of 8,250m, and was completed in an extremely short period of2 years and 8 months.

Ise Bay Typhoon ～Construction of seawall for storm surge～

7

Nankai megathrust earthquakes with magnitude of 9.0 or intensityof 7.0 are being estimated, if the Nankai megathrust earthquakesoccur between Suruga Bay and Kyushu offshore eastward.

Flood region

Height of tsunami※ The hypothetical seismic motion is assumed to be "towards the

land", where damages caused by the tremor reach a maximum.・The height of the tsunami triggered by Nankai megathrust earthquakes isestimated to reach 5m in Nagoya city (Minato district) and it is feared thatthe city area will sustain flood damages.

Graph showing the height of the tsunami along the coast(during high tide)Case 1 "Suruga Bay to Kii Peninsula offshore" scenario with a large area of slip and extremely large area of slip, levee condition: breach in the

levee once the tsunami flows over the levee

Source: Taken from Japan Cabinet office "Regarding tsunami height and flood region due to Nankai megathrust earthquakes (second report) and estimated damages (first report)" on 29 Aug 2012

Case 1 "Suruga Bay to Kii Peninsula offshore" scenario with a large area of slip

Seawall condition: No seawall, no earth-made levee

Fear of occurrence of Nankai megathrust earthquakes

Seismic intensity map

8

On 29 Aug 2012, Japan Cabinet office made an official announcement of estimated damages due toNankai megathrust earthquakes.

Large damage is predicted, even when compared with the Great East Japan Earthquake.

Flood area Population within flood region Deaths and missing people

Building damages(Number of houses totally

destroyed)

Great East Japan Earthquake 561 km2 About 620,000 people About 18,800 people About 130,400 houses

Nankai megathrust earthquake (Reference:Hypothetical earthquakes

in Tokai, Tonankai and Nankaiin the year 2003)

1,015 km2(-)

About 1,630,000 people(-)

About 323,000 people(About 24,700 people)

About 2,386,000 houses(About 940,200 houses)

multiplying factor About 1.8 times About 2.6 times About 17 times About 18 times

The case where the damages reach a maximum compared to the Great East Japan Earthquake

Source: 19 Aug 2012 Nankai megathrust earthquake strategy assessment working group official release information

Aichi prefecture Mie prefecture Gifu prefecture Shizuoka prefecture

Maximum predicted deaths in each prefecture About 23,000 people About 43,000 people About 200 people About 109,000 people

(From the above figures, number of deaths due to tsunami) (About 6,400 people) (About 32,000 people) (―) (About 95,000 people)

Maximum predicted rescues required in each prefecture About 71,000 people About 34,000 people About 1,000 people About 65,000 people

(From the above figures, number of required rescues due to tsunami) (About 2,700 people) (Abou t1,400 people) (―) (About 8,000 people)

Estimated deaths and required rescues of each prefecture within the Chubu region jurisdiction

Source: 19 Aug 2012 Nankai megathrust earthquake strategy assessment working group official release information 9

Safeguard to protect the inland area by double defense protection

The Nagoya Port is equipped with seawall for storm surge (first line of protection) and coastal seawall(second line of protection) to safeguard the inland area from floods during high tides and tsunami.

Breakwater

Seawall

L.W.L T.P.-1.37m

高

潮

防

波

堤

津波高（整備前）地震後の天端高（整備後）

T.P. +3.14m※1津波高 T.P. +3.01m※1

防

潮

壁

（湾奥部）

※2

※3

地震後の天端高（整備前）T.P. +1.58m※1

H.W.L T.P+1.20m

津波による潮位差

津波高（整備後）

①Reduce the height of the high tides and waves by 30% within the seawall

②Reduce the height of the tsunami that reaches the rear region of the bay by 15%※Earthquake and tsunami of largest scale

Seawall1.4m reduction

(About30%)

Breakwater

0.4m reduction(About15%)

※１： Average value for the entire seawall※２： Subsidence due to seismic motion, liquefaction and tectonic movements※３： A separate assessment is to be carry out for subsidence due to coastal maintenance facility (coastal management)

Seawall

Source: Chubu Regional Development Bureau(2012)

Source: High tides strategy discussion meeting for Ise Bay (Oct 1960)

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Sea level at high tide

Astronomical tide level

Difference of tidal leveldue to Tsunami

Crest height after the earthquake (after improvement)

Tsunami height

Crest height after the earthquake (before improvement)

BreakwaterTsunami height (before

improvement)Tsunami height(after improvement)

Seawall for storm surge improvement project

The seawall for storm surge was built 50 years ago in 1964 and has aged significantly. In addition, it ispresumed that it will not be able to provide sufficient protection due to subsidence triggered byliquefaction in the event of a large scale earthquake occurrence.

Improvement works began in fiscal year 2011 after the 3rd revised budget is approved. The structure,when completed, will be able to withstand earthquake and tsunami of the largest scale, and stand up totyphoon-class high tides that frequently occur in the Ise Bay after huge earthquakes.

■Project location diagram

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Nabeta levee (L=2,347m) Central levee (west L=307m, east L=507m) Chita levee (L=1,329m)

高潮・津波など

中詰砂

中詰砂

嵩上

ケーソン補強洗掘防止

断面補修

■Illustration of breakwater improvement

Part of the elevation of the Nabeta levee (at location with land behind) is to scheduled to be completed in 2015.

Construction works location

Caissonreinforcement

Heightening

Scouringprevention

Facade repair

2013 2014 2015

■Breakwater development schedule

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Facade repair

Strom surge, tsunami, etc.Heightening

Caisson reinforcement

Scouring prevention

Filled material

Seiryu Maru (Nagoya Port)◆The deployment scheme of the three large scale dredging and oil spill recovery ships covers the whole of Japan

(H: hours)

Large scale dredging and oil spill recovery ships are deployed to strengthen the ability to prevent and remove oilspill along the Japan coastline region, as a result of the Nakhodka tanker oil spill accident in Jan 1997.

The three large scale dredging and oil spill recovery ships, "Seiryu Maru (Nagoya Port) , "Kaisho Maru (Kita KyushuPort) and Hakusan (Niigata Port)", were deployed on request by Japan Coast Guard (according to Act 41-2 of MarinePollution and Disaster Prevention Law). The ships arrived on-site within Japan coastal region 48 hours afterdeployment, and established a framework to carry out speedy and precise operations.

Hakusan (Niigata Port) 【Work completionin May 2002】

Seiryu maru (Nagoya Port)【Work completionin Mar 2005】

Kaisho Maru (Kita Kyushu Port)【Work completioninNov 2000】

Source: Chubu region development research groupHandling notes 09.11.04Update informationNo.D004Dredging and oil spill recovery ship "Seiryu Maru"

発生月日 1978.1.18 1990.1.26 1997.1.2 1997.4.3 1997.7.2

発生場所三重県　四日市沖京都府　経ヶ岬沖島根県　隠岐島沖長崎県　対馬沖東京湾　本牧

流出量１０５ＫＬ６５０ＫＬ６２４０ＫＬ１８６ＫＬ１５５０ＫＬ

事故船名降洋丸マリタイムガーデニア号ナホトカ号オーソン号ダイヤモンドグレース号

出動日数５日間２６日間５４日間１３日間５日間

油水回収量５ＫＬ２０ＫＬ９３８ＫＬ８ＫＬ２２８ＫＬ

◆Oil spill recovery results of the Seiryu Maru

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Niigata

NagoyaKitakyushu

Date

Accidentsite

Spilledamount

Ship name

Workingdays

Collected oil volume

Yotsukaichi,Mie pref.

Ryuyomaru

5 days

Kyogamisaki, Kyoto Pref.

Maritime Gardenia 7

26 days 54 days

Nahodka

Okinoshima, Shimane Pref.

Tsushima, Nagasaki Pref.

Ohsung

13 days 5 days

Diamond Grace

Tokyo Bay, Honmoku

Source: Chubu region development research groupHandling notes 09.11.04Update informationNo.D004Responsibilities of "Seiryu Maru"

Drag head

Highly viscosity oil spill recovery in progressLow viscosity oil spill recovery in progress

Disaster support

Disaster countermeasures planning room

・Quick grasp of the disaster situation, and handle transport of crews and commodities

・Equip with disaster countermeasures room and helicopter landing pad

Able to handle changing characteristics of the oil spill as time passes

Cruising at 2～3 knot Sediments from the seabed are being sucked into the drag head

・Able to carry out dredging operations without obstructing other vessels・3 shifts schedule, 24 hours dredging operations

Helicopter landing pad

Oil spill recovery

Dredging

Seiryu Maru is responsible for dredging, oil spill recovery and disaster support.

<Seiryu Maru data>１． Gross tonnage 4,792 ｔ２． Total length 104 m３． Speed 13.5 knots (maximum)

(Speed per hour About 25 km)４． Oil spill recovery tank (1,526 m3)

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The harbors along the side of the Tohoku region Pacific sea were non-operative during the Great East JapanEarthquake on 11 Mar 2011. Due to clearing of the water routes, part of the Kamaishi Port (15 Mar 1800 hours) andOfunato Port (22 Mar 2100 hours) became operational again.

Heavy machineries for construction and emergencies supplies (food, drinks and daily products) were transported bythe Seiryu Maru (dredging and oil spill recovery ship) to Kamaishi Port and Ofunato Port, as it was difficult to carrylarge amount of cargoes by land.

Unloading of emergency supplies at the Ofunato Port that came from Tomakomai Port

During the Great East Japan EarthquakeSea route of Seiryu Maru for the rescue and support activities

Vicinity of Ofunato city on National Route 45 after road clearance

The ports serving as key points for transport of supplies and the roads that connects the surrounding region were cleared for opening immediately after the disaster struck.Unloading of emergency supplies at the Ofunato Port

Source: Chubu region development research groupHandling notes 09.11.04Update informationNo.D004Activities of "Seiryu Maru" after the Great East Japan Earthquake

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Tomakomai Port

Kamaishi Port‐Tomakomai Port

Tomakomai Port‐Ofunato Port

Kamaishi Port

Ofunato Port

Nagoya Port‐Kamaishi Port

Nagoya Port Ofunato Port‐Nagoya Port

81

187151

330

93

177 296

260

371239

000

100

200

300

400

500

600

H17 H18 H19 H20 H21 H22 H23 H24 H25

Hakuryu Debris recovery track record per fiscal year㎥

Source: Chubu region development research groupHandling notes 09.11.04Update informationNo.D004Sea environment maintenance vessel "Hakuryu"

Debris and oil spill recovery range

Hakuryu (Nagoya Port)

Responsible for "recovery of marine debris on sea surface“, "oil spill recovery" and "environmentmonitoring investigation".

Debris recovery status

Status of marine debris

: Debris recovery track record in Tohoku region during Great East Japan Earthquake

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Source: Chubu region development research groupHandling notes 09.11.04Update informationNo.D004Activities of "Seiryu Maru" after the Great East Japan Earthquake

Recovered a large amount of marine debris that were generated by the tsunami, to ensure the safe passage ofvessels to the Sendai Bay water region where the marine logistics bases, Sendai Shiogama Port and Ishinomaki Port,are situated.Amount of recovered marine debris in Sendai Bay [239.1 m3] (23 Apr 2011 - 19 May)

4/19～4/22

Nagoya Port

Sendai Shiogama Port

Outbound route

Shipping route of Hakuryu

Inbound route5/22～5/24

Marine debris recovery works by Hakuryu in progress

Recovering parts of destroyed houses

Recovering fishery farm rafts and equipment

Recovery of driftwood by a multi-segment crane

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GPS Surface buoys distribution

Sent to Meteorological Agency(Utilized as tsunami information)

Shizuoka prefecture Omezaki offshore: 01 Jul 2010 ~Mie prefecture Owase offshore: 01 Apr 2009 ~Ise Bay offshore: 07 Aug 2013

ネットワーク

観測センター

収集・分析

提供 Aomori east coast offshoreInstalled on Mar 2008

Miyagi northern offshoreInstalled on Mar 2008

Iwate southern offshoreInstalled on Apr 2007

Iwate central offshoreInstalled on Mar 2008

Mie Owase offshoreInstalled on Feb 2008

Miyagi central offshoreInstalled on Mar 2007

Shizuoka Omaezaki offshoreShizuoka Feb 2009

Wakayama southwest offshoreInstalled on Dec 2007

Iwate northern offshoreInstalled on Feb 2009

Fukushima prefecture offshoreInstalled on Mar 2009

Installed at Tokushima prefecture offshore on Jan 2010

Kochi prefecture western offshoreInstalled on Nov 2007

Ise Bay offshore(Installed on 23 Jun 2013)

Installed at Aomori west coast southern offshore on Jul 2010

Yamagata prefecture offshoreInstalled on Jul 2010

Akita prefecture offshoreInstalled on Jul 2010

Ise Bay offshore GPS surface buoy

Legend

: Installation completed

The 3rd buoy with GPS capability for the Chubu region in Ise Bay offshore was installed on Jun 2013Trial implementation of the observed results commenced on Mar 2014.

GPS Roles of the surface buoys:○ Accurate observations of the offshore waves required for port maintenance.○ The observed results are sent to Meteorological Agency and related organization for use as tsunami measurement information during earthquake.

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14:46 hours Earthquake occurrence

14:49 hours The Meteorological Agency make official announcement of "tsunami alarm (large tsunami)"

14:50 hours Meteorological Agency announced predicted height of tsunami to be 3m at Iwate and Fukushima and 6m at Miyagi.The surface buoys at Kamaishi Port recorded ebbing tides after the earthquake occurred.

14:57 hours Kamaishi Port GPS surface buoy recorded rise in sea level

15:09 hours Kamaishi Port GPS surface buoys recorded sea level difference of more than 3m

15:14 hours Meteorological Agency updated the predicted height of tsunami to be 6m at Iwate and Fukushima and 10m at Miyagi.

15:21 hours The check point for tides at Kamaishi Port recorded waves taller than 4.2m

Miyazaki Hyuga offshoreInstalled on Mar 2014

Observation Center

Provision Collection/Analysis

Network

GPS Satellite

GPS wave gauge

Waves

Land Station (GPS base station)

Observationstation

GPSstation

Ise Bay

Mikawa BayLocation of ground station

(Ise Wan Vessel Traffic Service Center )

About 25km

Location of observation station(Nagoya Port Bay Office)

Observed information is made available for public viewing on 07 Aug 2013. Also, Ise Bay was addedas a new tsunami observation point by the Meteorological Agency on 05 Nov 2013.

Location

Omezaki offshore (already installed)

Owase offshore (already installed)

Ise Bay offshore

Observed information is made available to the public on 07 Aug 2013.

◆ "Realtime NOWPHAS"・PCversion:http://www.mlit.go.jp/kowan/nowphas/・Mobile version: http://nowphas.mlit.go.jp/

The observed information is made available to the public through the website "realtime NOWPHAS"

Installed GPS surface buoy at Ise Bay offshore (on 23 Jun 2013)

Overview of GPS surface buoys at the mouth of Ise Bay

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Nagoya Port

Documents

Transcript of Nagoya Port