Dataset: Sediment grain size

Name: Average sediment grain size at in- and out-flow at Carlsbad Desalination Plant, Southern California,2014-2016 (Effluent Impacts on Coastal Ecology project)
Published: 2017-10-11
Keywords: oceans

Cite This Dataset

Spatial Extent: N:33.1459 E:-117.336641 S:33.1355 W:-117.35295

Temporal Extent: 2014-12-01 - 2016-11-30

Project:

Brine Discharge From Desalination Plants - Impacts On Coastal Ecology, Public Perception, and Public Policy (Effluent Impacts on Coastal Ecology)

Principal Investigator:

Adina Paytan (University of California-Santa Cruz, UCSC)

Co-Principal Investigator:

Dr Brent Haddad (University of California-Santa Cruz, UCSC)

Dr Donald Potts (University of California-Santa Cruz, UCSC)

Student:

Ms Karen Lykkebo Petersen (University of California-Santa Cruz, UCSC)

Contact:

Ms Karen Lykkebo Petersen (University of California-Santa Cruz, UCSC)

BCO-DMO Data Manager:

Nancy Copley (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version Date:

2017-10-11

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Average sediment grain size at in- and out-flow at Carlsbad Desalination Plant, Southern California,2014-2016 (Effluent Impacts on Coastal Ecology project)

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Description

This dataset contains sediment grain size, mean sediment grain size and sorting values (sigma)

Methods & Sampling

Samples collected in a perimeter of ~1 km offshore of the discharge channel (33°08'18.9"N 117°20'21.3"W).
Bottom samples collected at depth range 4m – 17m

Samples were collected in four trips:
Pre-discharge: Dec 2nd-4th 2014 and Sep 21st-24th 2015.
Post-discharge: May 9th-12th 2016 and Nov 8th-11th 2016

Transect lines were deployed going from the discharge channel (Outflow) and the Intake to 1000 m offshore. Sampling was done every 25 m until 200 m offshore, then at 400, 600, 800 and 1000 m (“stations”). The “Parallel” transect ran continuous parallel to the beach ~200 m offshore and samples stations were deployed every ~100 m. Station 1 is the southern-most sampling point (south of discharge channel). At each station surface (~1 m depth) and bottom water samples were taken and a sediment sample.

The benthic surveys were done continuously at the first 200 m offshore if water conditions allowed. At station 400, 600, 800 and 1000 and on the parallel stations, 10 1x1m quadrates were deployed.

Sediment analysis:

300-500 g of sediment was collected at certain stations. The sediment was kept at -20 degC. Upon analysis, the sediment was thawed and rinsed in 90% ethanol.

The ethanol was obtained and surveyed through a microscope to count the organisms present. The counted individuals were summed and normalized to the weight of the sample.

The sediment was dried and weighed and the grain size analyzed through sieving Sieving pots ranging from +0.5 Φ Phi to +4.75 Φ Phi (+0.5 being bigger particles and +4.75 being smaller) were used. A weighted amount of sediment (between 75-90 g) was stirred for 15 min. and the amount of sediment in each pot was weighted (Folk 1966).

Data Processing Description

BCO-DMO Processing:

- added conventional header with dataset name, PI name, version date
- renamed parameters to BCO-DMO standard
- sorted data by date
- transposed data to fit BCO-DMO formatted rows and columns

Version 1: 2015-08-03
Version 2: 2015-08-11 (added lat_site/lon_site for mapping purposes)
Version 3: 2016-09-21 (added 2015 data)
Version 4: 2017-09-22 (revised 2014 data and added 2016 data)

Data Files

File
grain_size.csv (Comma Separated Values (.csv), 2.70 KB) MD5:125d0b59c279613f3177fc091223981d Primary data file for dataset ID 716181

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1325649

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
Paytan_2014		2014-12-02	shoreside Carlsbad Desalination Plant	Adina Paytan (Principal Investigator)	data info

Instruments

Nutrient Autoanalyzer

Supplied Name:

Supplied Description:

flow injection nutrient auto-analyser (Lachat)

Instrument Type

Generic Name: Nutrient Autoanalyzer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB04/

Generic Description:

Nutrient Autoanalyzer is a generic term used when specific type, make and model were not specified. In general, a Nutrient Autoanalyzer is an automated flow-thru system for doing nutrient analysis (nitrate, ammonium, orthophosphate, and silicate) on seawater samples.

pH Sensor

Supplied Name: handheld pH probe

Supplied Description:

Instrument Type

Generic Name: pH Sensor

Generic Description:

An instrument that measures the hydrogen ion activity in solutions.

The overall concentration of hydrogen ions is inversely related to its pH. The pH scale ranges from 0 to 14 and indicates whether acidic (more H+) or basic (less H+).

Salinometer

Supplied Name:

Supplied Description:

Guideline Portasal

Instrument Type

Generic Name: Salinometer

Generic Description:

A salinometer is a device designed to measure the salinity, or dissolved salt content, of a solution.

Shimadzu TOC-V Analyzer

Supplied Name: Shimadzu TOC-V CHS

Supplied Description:

Used to measure dissolved organic carbon concentrations

Instrument Type

Generic Name: Shimadzu TOC-V Analyzer

Acronym: Shimadzu TOC-V

Community Identifier: http://onto.nerc.ac.uk/CAST/124

Generic Description:

A Shimadzu TOC-V Analyzer measures DOC by high temperature combustion method.

Turner Designs 700 Laboratory Fluorometer

Supplied Name: TD-700 flourometer

Supplied Description:

Used to measure chlorophyll-a

Instrument Type

Generic Name: Turner Designs 700 Laboratory Fluorometer

Acronym: TD-700

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0510/

Generic Description:

The TD-700 Laboratory Fluorometer is a benchtop fluorometer designed to detect fluorescence over the UV to red range. The instrument can measure concentrations of a variety of compounds, including chlorophyll-a and fluorescent dyes, and is thus suitable for a range of applications, including chlorophyll, water quality monitoring and fluorescent tracer studies. Data can be output as concentrations or raw fluorescence measurements.

Water Quality Multiprobe

Supplied Name:

Supplied Description:

YSI 85 Handheld Oxygen, Conductivity, Salinity, mg/L C and Temperature System

Instrument Type

Generic Name: Water Quality Multiprobe

Generic Description:

An instrument which measures multiple water quality parameters based on the sensor configuration.

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
date_Fieldtrip	local date of field sampling formatted as Mon-yyyy	unitless	date_local
Site	sampling location: either near intake or outfall	unitless	site
Phi	Krumbien Phi scale grain size category	unitless	sed_grain_size
sediment	The average amount of sediment collected at that particular phi size.	grams	weight
mean_mz	the calculated mean phi-size out of 16% and 50% percentiles	Phi scale units	sed_grain_size
mean_mm	the mean grain size	millimeters	sed_grain_size
sorting_sigma	unique number to classify which type of sediment and how well it is sorted	unitless	sed_grain_size
non_inclusive_stdev	standard deviation for sigma	unitless	sed_grain_size

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Database

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Dataset: Sediment grain size