DHI has been responsible for formulating and implementing Environmental Monitoring and Management plans for a number of coastal reclamation projects in South East Asia. These draw on DHI's strong capabilities in field survey, marine and intertidal habitat assessment, water quality monitoring, and DHI's traditional engineering and modelling capabilities related to hydrodynamics and sediment plume forecast.
Field surveys
Field survey services include bathymetry, spill surveys, hydrographic data (currents, waves, turbidity, salinity, etc) and marine habitats. Monitoring of survey parameters involves all elements from design, planning, installation, operation, QA/QC, calculation, interpretation and management.
DHI offers a range of field survey, products and monitoring services, which combined with our laboratories, provide a unique solution for marine and coastal environment. The services and products may be provided as an integral part of consulting projects or independently.
EMMPs
Water quality and sediment quality surveys are essential components in the Environmental Impact Assessment (EIA) or Environmental Management & Monitoring Programme (EMMP) of many proposed offshore development. These surveys are carried out before, during and after the completion of the projects; recording baseline conditions prior any works implemented, monitoring the environmental conditions of the on-going works during the stipulated duration and recording conditions after the works have been completed.
On-line feedback monitoring
DHI provides tailor-made online monitoring systems for specialised purposes such as navigation aid, warning systems for water quality and flooding as well as data to be used in numerical forecast models. All types of met-ocean data (waves, currents, water levels, temperature, salinity, chemical and biological parameters, wind etc) can be included in specialised online monitoring systems. The systems are developed and delivered with databases where relevant and with advanced analysis and presentation tools.
Data received from the sensors are transmitted via telecommunications link to local computer systems. Data from DHI's designed and implemented monitoring systems can be stored in any database. Combined with the DHI's database DIMS (Digital Integrated Monitoring System), the user will have access to numerous analysis and presentation tools.
Online data are used intensively in combination with numerical forecast models for flood or tsunami warning systems, wave and/or current forecasts etc. Online monitored data are used either to provide boundary conditions for the models or to improve model results through data assimilation.