Plate Motion Vectors

The Plate motion vectors menu allows you to plot global or regional network vector observation collections and GPS stations on the map.

  • Global GPS vectors show the direction and rate of horizontal crustal (plate) motion. The global datasets use 'absolute' plate motion, referred to as a no-net rotation reference frame or NNR. NNR shows how the plates are moving in relation to each other, based on a fixed point deep within the earth. The vectors represent compilations of geodetic measurements taken from station arrays around the world, some (or many?) of which are listed in the GPS Station Array submenu. Global datasets
    Are the data from models, obs, or both? Explain. We need a legend, right? Use any of this from JVV Jr? Model data = A surface velocity model based on GPS measurements, geologic fault slip rates, and earthquake focal mechanisms. Observational data = A compilation of observed surface velocities based on GPS measurements
  • Regional vectors (United States and International): Similar to global vectors except that the vectors show motion along plate boundaries in specific regions and are based on a particular frame of reference (plate in relation to which the velocities are drawn). This is known as net rotation or "NR". Regional datasets , International datasets
  • Lengthen vectors lets you set the length of the vector lines. Doubling or tripling the length makes the lines easier to see when zoomed in on a map. Length options
  • Thicken vector lines lets you thicken the vector lines, making them easier to see when zoomed in on the map. Line options
  • GPS station arrays lets you overlay the names of sites where high-precision GPS or other geodetic data have been collected. Array names
  • Add station names (a toggle) displays the names of any GPS station arrays that you selected.

To select an item, click the box beside it. Click it again to deselect it. Click the <Apply changes> button to implement your changes. Note that once vectors are 'turned on,' they will appear on all subsequent maps until you deselect them or click the Clear button.


GPS Vectors

Title: Global vectors OR Global GPS vectors? Need say obs or models after each name? Discuss GMT? Do we provide info on each source here or just refer out?

The following GPS vectors (or vector arrays?) can be overlaid on a base map. For additional information on any of the options, access UNAVCO's Science Product Support - GPS Site Motion Vector/Crustal Velocity Archive OR jules.unavco.org/Voyager/Docs/Earth).

Global

GPSVel

Master model

IGS ITRF

 

CGPS

CGPS 2004

REVEL

REVEL 2000

IGS

International GNSS Service

 

Regional, US (Change name. What info goes in name vs alt tag? What other info provide? Show all on map?)

North America (USGS)

 

WUSC

Western US Cordillera (Western North America)

Alaska

Aleutians and Southern and Central Alaska

SCAT

Southern and Central Alaska

Chugach Mountain

Southern Alaska

Oregon

Oregon

SCEC

Southern California

EBAR

Eastern Basin and Range (Wasatch/Yellowstone area - Utah, Wyoming, Idaho, Montana

New Madrid

St. Louis - Memphis area (central US)

Regional, International (Change name. What info goes in name vs alt tag? What other info provide? Show all on map?)

Eastern Mediterranean

Eastern Mediterranean and Caucasus

Central Asia

Kyrgyzstan, Kazakhstan

JAMSTEC

Thailand

WING

Western Pacific Integrated Network, Western Pacific, Southeast Asia

GSI GEONET

Japan

Taiwan-Luzon

 

SNAPP

South America - Nazca Plate motion project

 


Lengthen vectors

Select how long you want the lines to be. (This will make them easier to see at different zoom levels.)


Lengthen 2x


Lengthen 5x

Lengthen 10x

 


Thicken vector lines

This toggle lets you thicken the vector lines so they are easier to see at different zoom levels.


Thick


Original

GPS station arrays and station names

   

 

Make names clearer. Explain what the menus are for, provide info on location... of each item - or is there an outside page for this info? Show them on map(s).

UNAVCO

(Add more) Both campaign and permanent stations

UNAVCO Permanent Stations

(Add more) Permanent stations only

PBO Nucleus

?

BARD

Bay Area Regional Deformation

CCDDIS

Crustal Dynamics Data Information System

IGS

International GPS Service Central Bureau

GGN

NASA and JPL's Global GPS Network (major subset of IGS sites)

SENH

NASA's Solid Earth Natural Hazards GPS monuments

NGS/CORS

Continuously Operating Reference Station network of NOAA's National Geodetic Survey CORS array

PANGA CWU

Pacific Northwest Geodetic Array, Central Washington University

PANGA UW

Pacific Northwest Geodetic Array, University of Washington

SCEC

Southern California Earthquake Center

SCIGN

?

SOPAC

Scripps Orbit and Permanent Array Center

WCDA

Western Canada Deformation Array

SuomiNet

?

USNSU (Seismic)

?

ASOS

Locations where atmospheric MET data have been or are being collected; obtained from NOAA's Automated Surface Observing System

Show all networks

 

Station names is a toggle that lets you turn on the names of any station arrays that you have selected.


Tectonic plates

The map shows the location of tectonic plates, each of which is described below. Other sources of information: Major Tectonic Plates of the World (USGS), Information on Plate Tectonics (USGS), Digital Tectonic Activity Map of the Earth (NASA).

Plates
Descriptions

Amurian

Microplate consisting of eastern Siberia and northern Manchuria (east of the Baikal Rift)

Antarctic

Antarctic continent plus Southern Ocean

Arabian

Arabian Penninsula plus east of the Red Sea

Anatolian

Microplate consisting of Turkey and eastern Aegean Sea

Australian

Australian continent plus surrounding areas of Indian Ocean and Tasman Sea

Capricorn

Central Indian Ocean

Caribbean

Caribbean Sea

Caroline

Microplate northeast of the Indonesian Archipeligo

Cocos

East central Pacific Ocean (northeast of the Galapagos Islands)

Eurasian

Eurasian continent north of the Alpine-Himalayan mountain belt and west of the Baikal Rift

India

Indian subcontinent south of the Himalaya Mountains

Juan de Fuca

Microplate west of North America (British Columbia/Northwest United States)

Nazca

Southeastern Pacific Ocean (southeast of the Galapagos Islands)

North American

North American continent plus the western North Atlantic Ocean

Nubia (West Africa)

African continent (west of the East African rift) plus the southeastern Atlantic Ocean

Okhotsk

Microplate consisting of the Sea of Okhotsk and Kamchatka Peninsula

Pacific

Pacific Ocean west of the East Pacific Rise and east of the Mariana trench

Philippine

Philippine Sea west of the Mariana islands and east of the Philippine Islands

Rivera

Microplate west of southern North America

Scotia

Microplate between Atlantic Ocean, Antarctica, Pacific Ocean, and South America

South American

South American continent plus southwestern Atlantic Ocean

South China

Microplate consisting of easternmost China (east of Tibet and north of Indochina)

Somalia (East Africa)

Microplate consisting of eastern Africa (east of the East African rift) plus the western Indian Ocean

Sunda

Microplate consisting of southeastern Eurasia and surrounding seas

Tarim

Microplate consisting of the Tarim Plateau (Takla-Maklan Desert) north of the Tibetan Plateau