Yellowstone Geysers Known Active in 1992
T. Scott Bryan
Cyclic Hot Spring Activity on Geyser Hill, Upper
Geyser Basin, Yellowstone National Park—Graphical and Interpretive Descriptions
of the Geyser Hill Wave, Diurnal Effects, Seasonal Disturbances, Random
(Chaotic?) Events, and Earthquakes
T. Scott Bryan
Abstract: In an effort to better understand the complex
relationships between geysers and other thermal features on Geyser Hill, a
comprehensive study of eruptive and water level variations was conducted during
July, 1992. The results show that there are both long-term and daily (diurnal)
cycles superimposed on a general but slight randomness. The causes of these
apparently independent cycles are speculated on.
Evidence for the Geyser Hill Wave and
Diurnal Effects on Geyser Hill During the 1980s
T. Scott Bryan
Abstract: An examination of eruption interval data for Giantess
and Beehive Geysers during 1981-1983 and for Plume Geyser during 1989-1990
indicates that the Geyser Hill Wave has been in operation during this entire
span of time in a fashion similar to that observed during 1992. A similar look
at miscellaneous Plume Geyser data shows that its diurnal effect was either
absent or only weakly present until 1989.
Why Mortar is Fan: An Analysis of the
History of the Fan and Mortar Geyser Complex
Abstract: Most geyser aficionados have considered the historic
record of the section of the Upper Geyser Basin extending from Fan Geyser to
Riverside Geyser as essentially complete and understood. Specific records of
geyser activity in this area extend back to the Washbum-Langford- Doane
expedition of 1870; members of this expedition named a feature "Fan Geyser" and
reported one of its displays.
Fan and Mortar Geysers in the Summers of 1991
Abstract: Fan and Mortar Geysers erupted relatively frequently
during the summers of 1991 and 1992. Eruption intervals from three to four days
In 1991 and two to three days In 1992 were most common. Observed cycle lengths
averaged 60 minutes (+/-15 SD) in 1991 and 55 minutes (+/- 13 SD) in 1992.
Almost all eruptions were preceded by either a River Vent pause or a short
cycle with no play from Angle. No relationship was found between Fan and Mortar
and Riverside Geyser or Link Geyser.
Activity in East Sentinel Geyser,
1991 and 1992, with historical perspectives
Abstract: East Sentinel Geyser is a rarely seen geyser in the
Morning Glory Group, located in the Upper Geyser Basin of Yellowstone National
Park, Wyoming. An observed eruption in September 1991 led to the realization
that East Sentinel is capable of two distinctly different types of activity,
from two different vents within the same crater.
Atomizer Geyser and Its Major Intervals:
July-August 1985, with notes on changes since 1985
Abstract: During five non-consecutive periods during July and
August. 1985. Atomizer Geyser was observed in an effort to make the first-ever
accurate determination as to its true eruptive nature. A total of 13 intervals
between major eruptions were logged. Data was also obtained about the minor
activity, which culminates in the major eruption. Notes about the activity
since 1985 are included.
Jewel Geyser: 5 August 1992 and 27 September
Ralph C. Taylor
Abstract: This report describes the activity of Jewel Geyser
during two short periods of observation in the summer of 1992. The number of
bursts per eruption and eruption Intervals are contrasted with the values from
the author's observations in 1989, 1990, and 1991. The 1992 activity had
significantly more bursts per eruption and longer intervals.
A New Look at the Fountain Group
Abstract: This report attempts to do three things. To present
as complete an overview as possible of what features exist in the Fountain
Group, especially its geysers. To present a short history of activity, with
more emphasis on information which is not found in readily available sources.
And lastly, to reexamine some of the history of these springs with an attempt
to untangle the amazing history of name jumbling which has taken place over the
Geyser Springs, Gibbon Geyser Basin,
Yellowstone National Park—Historical and Current Observations
Genean, Tom, and Chris Dunn
Abstract: Geyser Springs is a small geothermal area in the
Gibbon Geyser Basin of Yellowstone National Park. The area presents a varied
mix of both alkaline and acidic thermal features, including fumaroles, geysers
and mudpots. This report describes the features and their activity.
Visit to Josephs Coat Springs, Coffee Pot
Hot Springs, and "Fairyland Basin"
Lee H. Whittlesey and Rocco A. Paperiello
Abstract: This report presents an account of our trip to a few infrequently or
rarely visited thermal areas in the northern Mirror Plateau area of Yellowstone
National Park. The areas visited are placed into an historical perspective, and
some sketch maps are also included.
Visitors to Yellowstone Hot Springs Before
Lee H. Whittlesey
Abstract: An analysis of diverse literature shows
that Yellowstone was quite frequently visited during at least the 65 years
prior to the so-called discovery by the Langford-Washburn-Doane Expedition of
1870. This chronology is confined to pre-1870 visits known to have seen and
commented upon the thermal areas.
Mickey Hot Springs, Harney County,
Oregon—Observations of March 27-29, 1992
Abstract: Mickey Hot Springs in southeastern Oregon
is the site of a small geyser among about two dozen hot springs. This thermal
area is described and mapped here. The cyclical activity shown by the geyser
during three days in March 27-29, 1992 is included.
The Discovery of Kamchatka’s "Valley of
Dr. Tatyana I. Ustinova
Introduction: The following narrative was prepared
by Dr. Tatyana Ustinova in preparation for the talk she presented to a group of
GOSA members in Yellowstone on July 25, 1992. The original hand- written text
was rewritten and edited byT .Scott Bryan and then reviewed by Dr. Ustinova,
who has given her permission for this publication.