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K Indices of Magnetic Activity Relative to an assumed Quiet-day for each 3-Hour Period

Entry ID: gov.noaa.ngdc.G00590

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Summary

Abstract: ABSTRACT: The National Geophysical Data Center receives the K indices on a current basis from approximately 85 observatories. The K index is a quasi-logarithmic local index of the 3-hourly range in magnetic activity relative to an assumed quiet-day curve for the recording site. First introduced by J. Bartels in 1938, it consists of a single digit 0 through 9 for each 3-hourly interval. The K ...

Purpose: PURPOSE: Magnetic Activity Research

Related URL

Link: GET DATA

Description: FTP site of K Indices for download

Geographic Coverage

(Click for Interactive Map)

Spatial coordinates

N: 90.0

S: -90.0

E: 180.0

W: -180.0

Data Set Citation

Dataset Originator/Creator: Please See Summary

Dataset Title: K Indices of Magnetic Activity Relative to an assumed Quiet-day for each 3-Hour Period

Dataset Release Date: 1957

Dataset Release Place: Boulder, CO

Dataset Publisher: National Geophysical Data Center

Version: First

Online Resource: http://www.ngdc.noaa.gov/stp/GEOMAG/kp_ap.shtml

Temporal Coverage

Start Date: 1938-01-01

Science Keywords

SOLID EARTH > GEOMAGNETISM > GEOMAGNETIC INDICES

ISO Topic Category

GEOSCIENTIFIC INFORMATION

Platform

GROUND STATIONS

GROUND-BASED OBSERVATIONS

Instrument

MAGNETOMETERS

Project

ESIP > Earth Science Information Partners Program

Access Constraints ACCESS CONSTRAINTS: No Constraints

DISTRIBUTION LIABILITY: While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.

CUSTOM ORDER PROCESS: Contact data center for information

Use Constraints None

Ancillary Keywords

WDC/STP, BOULDER > World Data Center for Solar-Terrestrial Physics, Boulder

DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce

Global

Ground-based Magnetic Observatories

Data Set Progress

IN WORK

Data Center

National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce

Data Center URL: http://www.ngdc.noaa.gov/
Dataset ID: ______GEOMAGNETIC_INDICES_(K) ____

Data Center Personnel
Name: DON HERZOG Phone: 303-497-6140 Email: don.herzog at noaa.gov Contact Address: 325 Broadway City: Boulder Province or State: CO Postal Code: 80305 Country: USA