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 integrated part of consulting projects or independently.
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.
Marine Habitat Survey
Contact: Matthew Jury (mjj@dhi.com.sg)
With increasing awareness of the value inherent in marine habitats, assessment and monitoring of these habitats often form an integral component of environmental impact and monitoring programmes for coastal development projects.
Due to a paucity of data on marine habitats in the region, environmental impact studies inevitably involve extensive site reconnaissance and the collection of quantitative data to assess the status and extent of the marine habitats. DHI Singapore has been involved in a number of such environmental impact studies, and has thus accumulated experience and technical skills necessary to conduct efficient and reliable studies of these underwater and intertidal environments.
Results of the marine habitat surveys are essential in assessing the environmental impacts of the coastal developments, and in formulating appropriate management plans to reduce environmental impacts to acceptable limits.
Metocean Survey
Contact: Clint Marsillius Tiwol (cmt@dhi.com.sg)
Spill surveys, collection of met-ocean data such as current, waves, turbidity, salinity, etc are among the met-ocean surveys conducted in the region by DHI Singapore's field team. Our services include consultancy services on survey design, supervision and quality assurance of data.
Water Quality / Sediment Quality Survey
Contact: Matthew Jury (mjj@dhi.com.sg)
Water quality and sediment quality surveys are essential components in the Environmental Impact Assessment (EIA) or Environmental Management & Monitoring Programme (EMMP) of any proposed offshore developments in Singapore.
After conducting the desktop study, 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.
Both the water quality and sediment quality surveys are carried out by DHI’s Field Monitoring Services Department which includes in-house divers and technical field specialist. The scope of these surveys would depends on project specifications and requirements. The water / sediment quality sampling points are assigned to DHI’s best knowledge at various locations in the vicinity of the proposed development works. Upon collection, these data will then be analysed by accredited laboratories and DHI Engineers.
DHI Singapore has been carrying out water quality / sediment quality surveys in Singapore for public authorities as well as private companies as part of the EIA / EMMP requirement.
Online Monitoring
Contact: Stéphanie Doorn-Groen (sdg@dhi.com.sg)
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. DHI Singapore offers to receive, administer and QA/QC the data before it is forwarded to the customer or released on public or protected web pages.
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.