Dissolved oxygen
; Nutrients
; Sampling
; Sediments
; Bottom water
; Chemical gradients
; Coupling process
; Resuspension process
; Sampling interval
; Sediment water interface
; Suspended particulate matters
; Water sediment interface
; Biochemical oxygen demand
; ammonia
; chlorophyll
; dissolved oxygen
; nitrate
; chlorophyll
; oxygen
; particulate matter
; sea water
; water pollutant
; bottom water
; chlorophyll
; coastal water
; dissolved oxygen
; sampler
; sediment chemistry
; sediment-water interface
; shallow water
; suspended particulate matter
; vertical profile
; Article
; coastal waters
; pelagic zone
; salinity
; sampler
; sediment
; spring
; suspended particulate matter
; temperature sensitivity
; water pollutant
; water sampling
; analysis
; devices
; environmental monitoring
; particulate matter
; Chlorophyll
; Environmental Monitoring
; Geologic Sediments
; Oxygen
; Particulate Matter
; Seawater
; Water Pollutants, Chemical
Scopus学科分类:
Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要:
We developed an inexpensive bottom water sampler that can be operated from a small boat in order to obtain high resolution vertical profiles of dissolved oxygen (DO), chlorophyll, suspended particulate matter (SPM). These vertical profiles allow us to examine bottom resuspension processes and to estimate their benthic fluxes of nutrients across the sediment–water interface in shallow coastal waters. The sampler consists of a 2�m long thick-walled transparent tube with 26 sampling ports at 8–10�cm intervals. Each sampling interval contains a minimum of 300–�370�ml water samples. Test sampling was conducted twice during different tidal phases, and differences in bottom DO, ammonium and SPM were found to be significant between the two tests. Our results suggest that this bottom sampler is essential in order to study sediment-pelagic coupling processes by obtaining high resolution of various parameters in the 2�m water column above the sediment. � 2017 Elsevier Ltd
School of Marine Sciences, Sun Yat-sen University, Zhuhai Campus, China; Key Laboratory of Marine Resources and Coastal Engineering in Guangdong Province, Guangzhou, China; Department of Earth & Ocean Sciences, University of British Columbia, Vancouver, BC, Canada; Department of Design & Manufacturing Services Facility, Hong Kong University of Science and Technology, Hong Kong
Recommended Citation:
Chong K.Y.,Liu H.,Yin K.,et al. A bottom water sampler for determining chemical gradients across the water-sediment interface[J]. Marine Pollution Bulletin,2017-01-01,117(2018-01-02)