Dataset: Secchi Depth

Name: Secchi depth optical clarity from the R/V Kilo Moana KM0701 cruise in the South Pacificduring 2007 (WP2 project)
Published: 2011-01-06
Keywords: oceans

Cite This Dataset

Spatial Extent: N:17.3836 E:161.766 S:-36.1648 W:-162.4029

Project:

Ecotypic Diversity and Adaptation of Prochlorococcus in the Stratified, High Temperature Waters of the Western Pacific Warm Pool (WP2)

Principal Investigator:

Zackary I. Johnson (University of Hawaii, UH)

Contact:

Zackary I. Johnson (Duke University)

BCO-DMO Data Manager:

Stephen R. Gegg (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

06 January 2011

Version Date:

2011-01-06

Validated:

Yes

Current State:

Final no updates expected

Secchi depth optical clarity from the R/V Kilo Moana KM0701 cruise in the South Pacificduring 2007 (WP2 project)

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Description

Secchi Depth, water column optical clarity, meters

Methods & Sampling

At approximately local noon, a 16 inch diameter white/black quadrant disc was lowered from the ship’s deck until no longer visible and this depth (in meters) recorded as the Secchi depth. Notes on the approximate sea state, weather or ‘wire angle’ were taken if deemed relevant to the reading.

Data Processing Description

Generated from original file 'wp2_secchi.txt' contributed by Zackary Johnson

BCO-DMO Edits
- year, day of year converted to date formatted as YYYYMMDD
- parameter names formatted to conform with BCO-DMO convention

Data Files

File
Secchi_Depth.csv (Comma Separated Values (.csv), 831 bytes) MD5:aeb6a07f8b9f5bef5d6eb017832f92fc Primary data file for dataset ID 3408

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-0526462
NSF Division of Ocean Sciences	OCE-0526072

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
KM0701	Western Pacific Warm Pool WP2 WPWP (WP)2	2007-01-03	R/V Kilo Moana	Zackary I. Johnson (Chief Scientist) Erik Zinser (Co-Chief Scientist)	data info

Instruments

Secchi Disc

Supplied Description:

At approximately local noon, a 16 inch diameter white/black quadrant disc was lowered from the ship’s deck until no longer visible and this depth (in meters) recorded as the Secchi depth

Instrument Type

Generic Name: Secchi Disc

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0430/

Generic Description:

Typically, a 16 inch diameter white/black quadrant disc used to measure water optical clarity

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
Station	Station number	integer	station
date	date (GMT)	YYYYMMDD	date_gmt
lon	Station longitude (West is negative)	decimal degrees	lon
lat	Station latitude (South is negative)	decimal degrees	lat
depth	Secchi depth in meters	meters	depth
comments	comments related to sampling	text	comment

Status message

Database

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Dataset: Secchi Depth