Time Codes

E

abbreviation for "electronic." Eruption was determined by an electronic data logger. Most electronic times are initially reported by NPS rangers or volunteers. Some electronic times have been determined by GeyserTimes users.

ie

abbreviation for "in eruption." Eruption was observed, but not at the start.

ns

abbreviation for "near start." Eruption was observed within a minute of the actual start time.(Note this should not be used for webcam times where you see the start via webcam observation, the notion of internet lag is assumed already by the "wc" tag.)

ini

initial eruption for a geyser known to erupt in series

maj

major eruption

min

minor eruption

wc

webcam

?

a questionable eruption. Observer thinks that an eruption occurred, but isn't 100% sure.

A

abbreviation for "approximate." The "A" designation helps GeyserTimes calculate intervals. It is understood that these intervals may be incorrect on the order of hours, or, in some cases, days or weeks if the unobserved time-period was longer than overnight. This symbol has 2 uses

1. When an eruption was observed, but a specific time was not noted. Later, it was remembered that it did erupt at approximately this time.
2. For seasoned observers: Some geysers have tell-tale signs that they erupted. Historically, these entries have simply been labeled "overnight." That is, a geyser was in observation until night-time, left unobserved, and then observed again the following morning. Between those times, it had erupted. A known eruption occurred between certain times. It is appropriate to use the "A" designation for a time half-way between observations (in rare cases, an expert observer may choose to enter a time other than half-way between observations). "A" entries should always be accompanied by a detailed note explaining the situation to future researchers.

Other Terms

Entrant

individual that entered the eruption into the database

Observer

individual that observed the eruption (if different from the entrant)

Baseline

A marker placed on the side of a bordwalk or trail that has been measured to be a set distance away from the geyser. By standing at the marker and measuring the angle between the ground and the top of the geyser a height can be calculated.

Observer Codes

OFVCL-EV

Old Faithful Visitor Center Log - Electronic Version

RTED

Ralph Taylor Electronic Data

Grand Geyser Codes

D#/

When the interval between Turban eruptions is 25min or greater there is a Turban Delay with the letter "D" and the number of Turban eruptions before Grand starts (such as D3/T2Q)

V#/

When it is time for Turban or Turban starts, and Vent overflows but Grand does not erupt, there is a Vent Delay with the letter "V" and the number of Turban eruptions before Grand starts (such as V3/T2Q)

G

Grand initiated the eruption

T

Turban started before Grand

*

long 2nd burst (d>=1m15s)

#

long 3rd burst (d>=1m15s)

C

Vent & Turban continue after end of Grand

Q

Vent & Turban quit after end of Grand

Great Fountain Terms

p=# or Pause=#

Pause for Great Fountain's is the length of time in minutes between the 1 meter boil (which is the official start time of the eruption) and the time of the first burst that throws water out of the crater

Group Abbreviations For Unnamed Springs in Yellowstone

BBG

Biscuit Basin

BSB

Black Sand Basin

CDG

Cascade Group

CGG

Castle,Grand, & Sawmill Groups

CLC

Chain Lakes Complex

CLX

Culex Basin

DSG

Daisy Group

FCG

Fairy Creek Groups

FLG

Black Warrior(Firehole Lake) Group

FTN

Fountain Group

GFG

Great Fountain Group

GHG

Geyser Hill Group

GIB

Gibbon Geyser Basin

GNT

Giant Group

GRG

Grotto Group

HFG

Heart Lake's Fissure Group

HLG

Heart Lake's Lower Group

HMG

Heart Lake's Middle Group

HRG

Heart Lake's Rustic Group

HUG

Heart Lake's Upper Group

IMP

Imperial Group

KLD

Kaleidoscope Group

LSG

Lakeshore Group

LST

Lone Star Group

MGB

Midway Geyser Basin

MGG

Morning Glory Group

MHG

Marshall's Hotel Group

MMG

Morning Mist Group

MMS

Morning Mist Springs

MYR

Myriad Group

NBK

Norris Back Basin

NPR

Norris Porcelain Basin

OFG

Old Faithful Group

ORG

Old Road Group

OSG

Orange Spring Group

PBG

Punch Bowl Group

PIN

Pine Springs

PMG

Pipeline Meadows Group

PNK

Pink Cone Group

POT

Potts Hot Spring Basin

QAG

Quagmire Group

RSG

Round Spring Group

RVG

River Group

SDP

Serendipity Springs

SHO

Shoshone Geyser Basin

SMG

Sentinel Meadows Group

SPR

Sprinkler Group

TGG

Tangled Geysers

THD

Thud Group

UPG

Upper Springs

WCG

White Creek Group

WDG

White Dome Group

WSG

Westside Group

WTL

West Thumb Lower Group