From Engineering Knowledge to Wise Adaptation • Kazuya Yasuhara

• Institute for Global Change Adaptation Science (ICAS)

• Professor Emeritus, Ibaraki University, Japan

2nd Adaptation Forum

• Bangkok, Thailand

• 13 March, 2012

Outline of Ｓ-8 supported by MOE, Japan

Providing scientific finding to

decision making for domestic &

foreign policies

Socioeconomic Scenario

[Theme 2] Community-based

Impacts Evaluation and

Adaptation

Policies

[Theme 1] Reliable Evaluation for Global Warming Impacts

Synthetic evaluation model Economic analysis

Sim

plifie

d

evalu

atio

n

meth

odolo

gy

Feedback to community

[Theme 3] Indices for Evaluating

Vulnerability and

Adaptability

in the

Asia-Pacific Region

Health Agriculture Coastal disaster Eco-system

Water resource

Downscaling of climate scenarios Wid

e-ra

nged

evalu

atio

n

meth

odolo

gy

Climate Scenario

Community-based

consortium International network

in the Asia Pacific

Region

Feedback to developing countries

2

Integrated Monitoring System for Adaptation Strategies on

the Vietnamese Coast” (FY2011-FY2013)

Monitoring

・Ocean waves・Performance

of dyke

Analysis

・Data analysis・Numerical

analysis

Adaptation

・Proposal・Verifi-

cation

Ibaraki

/TsukubaUniversities

Hanoi Univ.

of Science

Toa Const-

ruction Co.Ltd.

Penta Ocean

ConstructionCO. LTD

(2009 at Hai Hau district)(2010 at Hai Hau district）

Fukuyama

Consultants

International cooperation

(Supported by MEXT, Japan)

Hai Trieu Village in 1995(L.G.Vu,2003) Hai Trieu Village in 2001(L.G.Vu,2003)

Hai Ly Village in July-2010 Hai Ly Village in September-2011

A Typical Example in Vietnamese coastal erosion

Two approaches for plan and action of adaptation

(After Mimura, 2011)

Health

Agriculture

Water resource

Coast

Forestry

Disaster prevention

Disaster reduction

＜Countermeasure＞ ＜Adaptive measure＞

Mutual understanding of

different scientific communities

GLOBAL ENVIRONMENT SCIENCE

DISASTER PREVENTION

SCIENCE

Relationship between two sciences

Adaptive measure against erosion using soil bag with jute or geosynthetics(GS)

(a) 土嚢工法を適用した波浪侵食対策工の断面図

10 m 15 m

中詰め材：砂＋モルタル

中詰め材：砂＋モルタル中詰め材：現地発生土＋セメント

ジュートバックの施工区間ジオシンセティックスバックの施工区間

木杭

ソイルセメントによる覆土

(b) 正面図（すり付け部3m区間を含まず）

中詰め材：現地発生土＋セメント＋ジュート繊維

3.3 m

敷きレンガ

木杭

破砕レンガ＋砂（フィルター材）

掘削線

ジュートバックもしくはジオシンセティックスバック

テール

（ジオシンセティックスバッグのみ）2.9 m風波（洪水期）

1.2 m

Jute or GS

Wave (storm)

Wooden

pile

(a) Horizontal profile

GS section Jute section

Soil

cement Sand+

mortar

Sand + mortar

Sand + cement + jute

(b) Frontal view

Locally avail.

soil + cement

From Adaptation to Tohoku Reconstruction, Japan

(JICA project in Bangladesh)

The adaptation measure for reducing climate change-induced disaster in Bangladesh can be adopted for recovery of disasters induced by the great Japan earthquake.

(Ishinomaki, Miyagi, Japan)

Multiple Protection: a set of example

(a) Beach nourishment

(b) Mangrove plantation

(c) Gabion placement

Summary

• From among many options for protecting coasts and river against erosion and other climate change-induced events, the importance of multiple-safe guard system is emphasized.

• The necessity of flexible structures from rigid ones is also emphasized for adaptation along the sea and river coasts including the levee.

• Utilization of locally available materials is recommended for soft structures.

Thank you for kind attention!