Saiful Bahri Hamzah

National Water Research Institute of Malaysia (NAHRIM) · Coastal and Oceanography Research Centre

Climate change alters the climate condition and ocean environment, leading to accelerated coastal erosion and a shift in the coastline shape. From previous studies, Southeast Asia's coastal region is suffering from severe coastal erosion. It is most sensitive and vulnerable to climate change, has broad and densely populated coastlines, and is under...

Over 90% of anthropogenic heat produced in the global system is stored in the ocean, leading to thermal expansion of the ocean and sea level rise. Rising sea levels are expected to cause low-lying coastal areas at greater risk of flooding in the next century. The predicted sea level rise levels as reported by NAHRIM was used to analyze physical coa...

The erosion-prone zone is characterised by nearshore sand formed by the combined action of tides, wind, and recurring waves crashing on the beach. By running perpendicular to the coastline and bathymetry, 51 cross-shore sections were chosen from a total of 54 to study longshore transport along the beaches of Kelantan and Terengganu. The hydrodynami...

Malaysia is a tropical Southeast Asian country with a steady annual rainfall and river flow pattern. The enormous river networks provide enough supply to build a coastal reservoir study, which would coincide with the government’s goal of exploring new raw water storage and delivery options. This study examines the present state of knowledge, techni...

Tsunami wave is one of the most serious threats to lives and activities, particularly in coastal cities within 100 m height from the mean sea level. Construction of coastal defense structures, such as seawalls and breakwaters, is the most popular measure adopted by engineers for protection from sea waves, including tsunamis, and mitigation of their...

Studies and monitoring were conducted between 2007 and 2010 to determine the effectiveness of concrete artificial reef blocks developed by NAHRIM called the WABCORE as potential tool to aid establishment of new marine ecosystem. The WABCORE blocks are first deployed and submerged in Panuba Bay, Tioman Island, Pahang in September 2006. Preliminary p...

Changes in rainfall pattern, rapid urbanization, infrastructure development and uncontrolled agricultural activities have been found as major sources to contribute to excessive reservoir sedimentation problem in Malaysia, thus significantly shorten the design life of a reservoir. Hence, reservoir functions have deteriorated, such as reduction in po...

This study investigates the capacities of chute spillway and stilling basin under multiple flow discharge scenarios. Thirteen cases, categorised as low, medium, and high flow discharges were experimentally conducted, with a 100% increase of Probable Maximum Flood (PMF) as the modified maximum flow. An analysis is extended to flood and scour potenti...

Over the years, Tanjung Piai in Johore had experienced severe coastal erosion due to dredging of navigation channel and high frequency of wake waves created by growing number of ships using the Straits of Malacca, Tebrau Straits and Port of Tanjung Pelepas. As a result, a stone revetment was proposed and designed by Department of Irrigation and Dra...

Field surveys of the 2011 Tohoku Tsunami reported massive failures of many seawalls and coastal barriers. The massive damages are vivid evidence that there are flaws in the design of seawalls and barriers. With this as the background, a sequence of laboratory experiments using dam-break waves was performed to simulate the interactions between the t...

many of the post tsunami field surveys which conducted by researchers revealed that, the failure due to scour at the landward toe of the seawall due to overtopping of tsunami wave forms one of the important types of coastal defence structures failure and constitutes one of the biggest threats to their structural performance. This study was intended...

Physical model was utilised to make an assessment of Batu Dam spillway, as well as to make informed recommendations of its hydraulic performance and proposed alterations. A scale of 1:25 was chosen for the model for optimum configuration. Simulations with respect to various reservoir levels and discharges to investigate effects of the varied flow c...

The estimated area exposed to flood disaster in Malaysia is estimated around 29,000 km2 or 9% of the entire country, affecting approximately 15% of the total population. The purpose of this study is to developed a physical model under tidal influence for Selangor River and to assess the floodplain and water level for various flow conditions with an...

reefs are potentially threatened by human activity ranging from coastal development and destructive fishing practices to overexploitation of resources, marine pollution and runoff from inland deforestation and farming. Artificial reef has been suggested as potential tool for reef restoration and rehabilitation. Studies and monitoring were conducted...