Case Study: Denver – 9 August 1967

Major magnitude 5.3 earthquake shock in Denver

On 9 August 1967, Denver experienced an earthquake that caught the city’s residents by surprise. The tremor, which registered 5.3 on the Richter scale, was particularly notable as it occurred in a region not typically associated with significant seismic activity. What made this earthquake even more remarkable was its eventual connection to human activity—specifically, the disposal of wastewater at the Rocky Mountain Arsenal, a chemical weapons manufacturing facility northeast of the city. This event would later become a classic case study in induced seismicity, where human actions trigger earthquakes, and it helped establish important precedents for understanding the relationship between fluid injection into the ground and subsequent seismic events.

One of the strongest and most economically damaging earthquakes to affect the Denver area in the 1960s occurred on August 9, 1967 around 6:30 AM, awakening and frightening thousands of people. This magnitude 5.3 earthquake, centered near Commerce City, caused more than eight million dollars (2022 dollars) in damage in Denver and the northern suburbs.

Felt reports and intensity ratings were described by von Hake and Cloud (1984). Intensity VII damage was reported in Northglenn, where plate glass windows broke, many walls, ceilings, foundations, and concrete floors cracked, and several businesses sustained damage due to fallen merchandise. One liquor store had estimated damage at USD $90,000 to $175,000 (2022 dollars).

Intensity VI damage was reported in 28 locations, many of which suffered considerable cracked plaster and mortar, broken windows, damaged foundations and chimneys, and damage to household goods. The earthquake was felt as far as Sterling to the northeast and Pueblo, Colorado to the south, as well as north to Laramie, Wyoming.

Based on the isoseismal map, the estimated felt area was about 20,000 mi2 (50,000 km2). Von Hake and Cloud (1984) proposed a size of 15,000 mi2 (39,000 km2), while Hadsell (1968) indicated it was felt over 45,000 mi2 (117,000 km2). Docekal (1970) reported a felt area of 20,000 mi2 (52,000 km2). A magnitude of Mb 5.3 was reported for this earthquake by von Hake and Cloud (1969). Nuttli and others (1979) calculated an Mb of 4.9 and ms of 4.4. Herrmann and others (1981) suggested a focal depth of 1.9 mi (3 km) for this event. The overall felt area is prominently elongated in directions parallel and perpendicular to the (north-south oriented Front Range) mountain front. The intensity V and VI contours are also oriented in an elongate pattern perpendicular to the mountain front.

Aerial view of the Rocky Mountain Arsenal, south plant, 1970. Photo credit: US Library of Congress.
Aerial view of the Rocky Mountain Arsenal, south plant, 1970. Photo credit: US Library of Congress.

This substantial earthquake, the largest of a long series, is believed to have been triggered by the deep injection of chemically-charged wastewater into a borehole drilled to a depth of 12,045 ft (3671 m) at the Rocky Mountain Arsenal in 1961. It was followed by an earthquake of magnitude 5.2 on November 27, 1967. In total, between 1962 and 1967 the U.S. Geological Survey (USGS) recorded over 1,500 earthquakes in the area. The Arsenal was a large chemical weapons-manufacturing facility run by the U.S. Army in Commerce City. Wastewater injection at the site stopped in 1966 and the entire facility closed in 1992. Much of the area is now a national wildlife refuge.


Citations NOTE: The ON-002 Earthquake Reference Collection which includes most of the following references, and 700 more—is available to researchers—see instructions on that page to access the collection.

Bardwell, George E. “Some Statistical Features of the Relationship between Rocky Mountain Arsenal Waste Disposal and Frequency of Earthquakes.” The Mountain Geologist 3, no. 1 (1966): 37–42.
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clouds and meaninglessness

Siri's butikk, Bergen, Norway, September ©1993 hopkins/neoscenes.
Siri’s butikk, Bergen, Norway, September ©1993 hopkins/neoscenes.

Siri's butikk, Bergen, Norway, September ©1993 hopkins/neoscenes.
Siri’s butikk, Bergen, Norway, September ©1993 hopkins/neoscenes.

I set off with a sigh. Above me the entire sky had opened. What a few hours earlier had been plain, dense cloud cover now took on landscape-like formations, a chasm with long flat stretches, steep walls, and sudden pinnacles, in some places white and substantial like snow, in others gray and as hard as rock, while the huge surfaces illuminated by the sunset did not shine or gleam or have a reddish glow, as they could, rather they seemed as if they had been dipped in some liquid. They hung over the town, muted red, dark-pink, surrounded by every conceivable nuance of gray. The setting was wild and beautiful. Actually everyone should be in the streets, I thought, cars should be stopping, doors should be opened and drivers and passengers emerging with heads raised and eyes sparkling with curiosity and a craving for beauty, for what was it that was going on above our heads?

However, a few glances at most were cast upward, perhaps followed by isolated comments about how beautiful the evening was, for sights like this were not exceptional, on the contrary, hardly a day passed without the sky being filled with fantastic cloud formations, each and every one illuminated in unique, never-to-be-repeated ways, and since what you see every day is what you never see, we lived our lives under the constantly changing sky without sparing it a glance or a thought. And why should we? If the various formations had had some meaning, if, for example, there had been concealed signs and messages for us which it was important we decode correctly, unceasing attention to what was happening would have been inescapable and understandable. But this was not the case of course, the various cloud shapes and hues meant nothing, what they looked like at any given juncture was based on chance, so if there was anything the clouds suggested it was meaninglessness in its purest form.

Knausgård, Karl Ove. My Struggle. Translated by Don Bartlett. 1st Archipelago books edition. Vol. 1. 6 vols. Brooklyn, NY: Archipelago Books, 2012.

word, Bergen, Norway, September©1993 hopkins/neoscenes.
word, Bergen, Norway, September©1993 hopkins/neoscenes.

The photos were made around the same time Karl Ove was living in Bergen: I was teaching at KHiB (now the Faculty of Fine Art, Music and Design, University of Bergen). Probably no need to explain the resonance of this particular passage to other entries on this blog.

from the archive


Arrival on Oahu, Rev. Dr. Paul Toms of Park Street Congregational Church, Boston, Massachusetts, leading a group of church ladies on a tour of Hawaii, July ©1967.
Arrival on Oahu, Rev. Dr. Paul Toms of Park Street Congregational Church, Boston, Massachusetts, leading a group of church ladies on a tour of Hawaii, July ©1967.

Arrival on Hawaii, Rev. Dr. Paul Toms of Park Street Congregational Church, Boston, Massachusetts, leading a group of church ladies on a tour of Hawaii, July ©1967.
Arrival on Hawaii, Rev. Dr. Paul Toms of Park Street Congregational Church, Boston, Massachusetts, leading a group of church ladies on a tour of Hawaii, July ©1967.

My favorite aunt, Mary MacKenzie, was Dr. Toms’ secretary for many years. She is in both photos, with dark hair, at the top of the stairs in the middle, holding her sunglasses and camera, and on the second photo, fourth from the far left, again holding her sunglasses, up in the air. Dr. Toms, aka “Kahu,” is the somewhat impassive fellow in the dark suit and sunglasses looking more like a Secret Service agent … Hawaii-Five-O, here we come!

The Long Night of Radio Art

At the vilma offices thanks to Gediminas and Nomeda — for hosting the stream I’m sending to Steve of art@radio in Baltimore who has an elaborate studio set-up for the live streaming he’ll be doing from there to The Long Night of Radio Art that is part of the Reinventing Radio project of KunstRadio. the whole project will be broadcast on FM, shortwave, a special 5.1 digital satellite transmission, and online. (Taking a breath). Yeah, live online. Meet August on the IRC channel broadcasting from Santa Barbara.

The Long Night of Radio Art, online and Linz, Austria, September ©2004 hopkins/neoscenes.
The Long Night of Radio Art, online and Linz, Austria, September ©2004 hopkins/neoscenes.

The Long Night of Radio Art, online and Linz, Austria, September ©2004 hopkins/neoscenes.
The Long Night of Radio Art, online and Linz, Austria, September ©2004 hopkins/neoscenes.

Baltimore, USA :: jamming radiophonic space :: 19:30 – 06:00 Eastern Standard Time

“jamming radiophonic space,” modulates the interplay of radio, Internet, wireless transmission, an private space.

This experientially diverse and geographically scattered group will contribute to “jamming radiophonic space” through decentralized, networked, and collaborative strategies of production and distribution. Streaming feeds from microphones places in and around artists’ workspaces will be gathered along with ambient sound called in via wireless and landline phones; requests have already gone out over electronic list-serves for individuals to call in and point their live phones for 10 or 15 minutes towards sounds emblematic of their time and place.

These sonic interruptions will then be mixed and processed into a stream of “hot media” by artists present in the Baltimore studio space using baby monitors, short-wave radios, software, and other improvised sound tools. The stream will then be made available world-wide to streaming clients via wired and wireless data connections.

Artists:

Chris Basile, Goeff Bell, Steve Bradley, Phaye Poliakoff-Chen, Chad Eby, John Hopkins (Vilnius, LT), Brendan Howell, John Hudak, Jacob Kirkegaard, Tim Nohe, Joe Reinsel, Jodi Rose, Bill Shewbridge, Nicole Shiflet, John Sturgeon, and others …

The Long Night of Radio Art, online and Linz, Austria, September ©2004 hopkins/neoscenes.
The Long Night of Radio Art, online and Linz, Austria, September ©2004 hopkins/neoscenes.

documentation

[ED: Documentation, yes. That’s all I do with the photography, all I ever did. Documenting immediate life scrolling by. And let that accumulate into a modest mass of imagery. Extracted from the mass, they appear fragmentary, and not so replete with ‘meaning.’ Here’s a handful from a warm 1988 summer’s end.]

Upon my re-patriation after three months in Iceland, Germany, Italy, France, Luxembourg, Denmark, Norway, and Sweden, following is a sample of what happened hanging with Willy & Andy in Hoboken:

concert in Central Park, Manhattan, New York, August ©1988 hopkins/neoscenes.
concert in Central Park, Manhattan, New York, August ©1988 hopkins/neoscenes.

at Willy & Andy's, Hoboken, New Jersey, August ©1988, hopkins/neoscenes.
at Willy & Andy’s, Hoboken, New Jersey, August ©1988, hopkins/neoscenes.

Willy & Andy, Hoboken, New Jersey, August ©1988, hopkins/neoscenes.
Willy & Andy, Hoboken, New Jersey, August ©1988, hopkins/neoscenes.

Andy, Hoboken, New Jersey, August ©1988, hopkins/neoscenes.
Andy, Hoboken, New Jersey, August ©1988, hopkins/neoscenes.

Lower Manhattan from Hoboken, New Jersey, August ©1988, hopkins/neoscenes.
Lower Manhattan from Hoboken, New Jersey, August ©1988, hopkins/neoscenes.

circuit at The Center of the Universe

My god, finally ran through the entire video production sequence in FinalCut Pro / QuickTime, etc., to get a simple sketch piece to the blog. It’s not optimal as the original footage is from an old iPhone versus a newer iPad Pro and such, but … First time in a couple years, it’s always such a hassle to start with raw video, an idea, and squeeze that through an endless series of constant externally-imposed permutations on editing platforms and exporting formats/codecs/resolutions that are currently acceptable to most browsers and servers. Especially when memory is compromised! gah!

This, a circuit (aka, cycle) around the center of the universe, something I ritually perform on each visit. I have used the circuit/cycle concept to ascribe the presence of place and presence within that place. It dates back to the very early piece “memories of three infinite half-spaces” filmed at the site of a huge jökulhlaup in Iceland in 1997.

The audio is a simple ambient track recorded from the base of a telephone pole near the center, droning on in the -20F winter night chill of the Valley.

Case Study: mine subsidence, CSM

For decades, the west side of the Colorado School of Mines (CSM) main campus had subsidence issues related to historical mining activities. At one point, in the 1990s, one of the married student housing units in that area was so badly damaged that it was condemned. In the early 2000s, after the school converted the subsidence-prone area into intramural-athletic (IM) fields, ongoing subsidence-related issues were still being reported.

Clay mining in Colorado dates back to the mid-1800s and Golden was a particularly good location for clay found in the Laramie Formation. This clay has been used for a variety of industrial purposes over the years including construction (bricks, structural tiles, sewer pipes), terracotta, refractory clays, and earthenware. The mining of kaolinitic claystones in what was later to become the western area of the Mines campus left backfilled/collapsed mine workings and the possible presence of underground void spaces. To complicate matters, that same area was also the site of coal mining in the 1880s and 1890s. In particular, the Pittsburg Coal Mine entry shaft may have been located in the vicinity of one of the observed subsidence features. This mine reportedly operated between 1876 and 1880, but is un-recorded by the State. The mining operations were thought to be on three levels at depths of 100, 150, and 225 feet running parallel to the mountains.

The condition of the Rockwell clay mine immediately south of the CSM campus and 19th Street along US 6 in 1977 before more recent reclamation as a golf course. Note the near-vertical dip on the up-turned sedimentary layers. The green area to the top left is part of the IM field where the subsidence occurred in the 2000s. Photo credit: Colorado Geological Survey.
The condition of the Rockwell clay mine immediately south of the CSM campus and 19th Street along US 6 in 1977 before more recent reclamation as a golf course. Note the near-vertical dip on the up-turned sedimentary layers. The green area to the top left is part of the IM field where the subsidence occurred in the 2000s. Photo credit: Colorado Geological Survey.
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Case Study: Rockfall – Manitou Springs

[ED: This brief report from 1995 was written by Jon White, (Senior Engineering Geologist, emeritus). It looks at a specific rockfall situation in the central Front Range town of Manitou Springs. There are hundreds of similar instances like this where gravity rules in mountainous terrain. Geotechnical solutions are of some help in the long-term scale of the hazards, but are extremely expensive to implement. Development pressures that are affecting building in areas threatened by natural disasters—of small and large scale—continue apace in the US West.]

Manitou Springs occupies a narrow valley where Fountain Creek emerges from the foothills northeast of Pikes Peak and west of Colorado Springs. The valley slopes are composed of interbedded resistant sandstone and conglomerates (i.e., gravelly sandstone), and weaker mudstones and shale. The outcropping sandstone is most prevalent on the steeper slopes on the north side of the valley.

During the wet spring of 1995, rockfall and landslide incidents increased throughout Colorado, some resulting in fatalities. In Manitou Springs, a fortunate set of circumstances occurred before the Memorial Day holiday weekend when local residents observed the movements of a large, dangerous block of rock before it actually could fall. The observation set into motion an emergency declaration by the town, resulting in a compulsory evacuation of homes located below the rocky slope, the closing of the road in the area, and an immediate rock stabilization project. During this emergency situation, the Colorado Geological Survey was asked to provide expert assistance to help stabilize the rock. The emergency evacuation decree remained in effect until the rock was stabilized and the area subsequently declared safe.

The ledge of jointed sandstone along with several large displaced blocks is seen at the center of the image. Photo credit Jon White.
The ledge of jointed sandstone along with several large displaced blocks is seen at the center of the image. Photo credit Jon White.
more “Case Study: Rockfall – Manitou Springs”

on Mesa Creek

ED: For new subscribers, selecting the red dot in the middle of the map will start the audio sample which can then be controlled using the play-bar and volume/mute (speaker) icon.

on Clear Creek

ED: For new subscribers, selecting the red dot in the middle of the map will start the audio sample which can then be controlled using the play-bar and volume/mute (speaker) icon.

watching Hells Kitchen

watching Hells Kitchen, Cedaredge, Colorado, September ©2024 hopkins/neoscenes.
watching Hells Kitchen, Cedaredge, Colorado, September ©2024 hopkins/neoscenes.

[ED: The far horizon is a portion of Grand Mesa at over 10,000 ft, and the side of the mesa facing the viewer, an area characterized by numerous landslides, is called “Hells Kitchen.” This is the view from my kitchen.]

on Ward Creek

Ed: For new subscribers, selecting the red dot in the middle of the map will start the audio sample which can then be controlled using the play-bar and volume/mute (speaker) icon.

watching Hells Kitchen

watching Hells Kitchen, Cedaredge, Colorado, August ©2024 hopkins/neoscenes.
watching Hells Kitchen, Cedaredge, Colorado, August ©2024 hopkins/neoscenes.

[ED: If you could see the far horizon, it is comprised of a portion of Grand Mesa at over 10,000 ft, and the side of the mesa facing the viewer, an area characterized by numerous landslides, is called “Hells Kitchen.” This is the view from my kitchen. Another note, my property sits on a large alluvial fan (many tens of sq mi) descending from the Mesa and fueled by Surface Creek. The slope of the fan is minus 10-12 degrees from horizontal, as demonstrated from right to left in the photo.]

watching Hells Kitchen

watching Hells Kitchen, Cedaredge, Colorado, August ©2024 hopkins/neoscenes.
watching Hells Kitchen, Cedaredge, Colorado, August ©2024 hopkins/neoscenes.

[ED: The far horizon is a portion of Grand Mesa at over 10,000 ft, and the side of the mesa facing the viewer, an area characterized by numerous landslides, is called “Hells Kitchen.” This is the view from my kitchen.]

on Kannah Creek

Ed: For new subscribers, selecting the red dot in the middle of the map will start the audio sample which can then be controlled using the play-bar and volume/mute (speaker) icon.

on Coal Creek

Ed: For new subscribers, selecting the red dot in the middle of the map will start the audio sample which can then be controlled using the play-bar and volume/mute (speaker) icon.

on Anthracite Creek

Ed: For new subscribers, selecting the red dot in the middle of the map will start the audio sample which can then be controlled using the play-bar and volume/mute (speaker) icon.

under the spruce tree

Ed: For new subscribers, selecting the red dot in the middle of the map will start the audio sample which can then be controlled using the play-bar and volume/mute (speaker) icon.

note to self

I’m no photographer. I take pictures, mostly rather banal pictures: re-creations, re-presentations, documentations of reality. When asked, I tell people that I photograph who I am with, what I am doing, and where I am. Suitably self-centric for the pseudo-artist.

Yes, I show up, with camera. And back when there was a physical craft involved, I excelled in the production of fine archival prints, and I was called a Master Printer. Over the years I taught many courses on the craft: master printing, photographic history, and photography. I have thousands of vintage silver, silver/sepia, and silver/selenium prints that have sat in boxes for the decades since I was last in a wet darkroom, plying that craft.

I still hold onto a selection of superb enlarger lenses, though the last enlarger I had access to—in the darkroom that I built for my father—I gave to the local college back in 2002. Their once-vibrant photography program collapsed a few years later. So much for craft, gotta sell those lenses.

oceanic detritus, Dritvík, Iceland, May ©2024 hopkins/neoscenes.
oceanic detritus, Dritvík, Iceland, May ©2024 hopkins/neoscenes. [Ed: and, no, that’s not a Lego, it’s 2-meters (7 ft) tall.]
However, in terms of an evolution of seeing, the eye, not much has changed: perhaps nothing. While specific subjects change, the overarching captures are repetitive and … banal … both in formal compositional metrics as well as the ways that the subjects are engaged. No evolution at all.

Not only that, I still can’t get a true horizontal horizon line! Dammit! Simple composition, strictures I never liked, were not transcended to a level where they could intentionally be disposed of entirely.

After five years of not carrying an analog 35mm camera, shooting only miniDV video from 2000 through 2006, I picked up a DSLR with a lens that gradually reduced itself over more than a decade’s use to a piece of garbage. And forget a clean CCD sensor. It’s worse than in the ‘old times’ with spurts of Dust-Off and manually spotting (or ‘re-touching’) negatives and prints with Spotone and tiny paint brushes. CCDs manifest every dust speck as large dark circles on the screen (and in print). Got a clear sky? Guaranteed to be covered in more-or-less distinct circular blobs. I finally upgraded to a true professional-grade DSLR a few years back—as usual, behind the current mirror-less technology—always several steps behind any state-of-the-art. The only time I was near that was when I was shooting with the two Nikon F2a bodies and a selection of decent lenses that my father generously handed down to me back in the late 1970s.

The successful Kickstarter campaign in 2013 to acquire a high-end large-format printer ended during Covid when—after seven years of pointless printing—one nozzle got clogged and I didn’t immediately address the issue to fix it. The printer is now a 250-pound paperweight. I could perhaps revive it, but that would require buying a full set of inks, a $2500 investment that might not pay off in the end. I only sold a handful of prints total, and gave away many more than that, by far.

At this point, my images are hardly ‘collectible’ and so the only photographic medium I am using currently is this travelog. That will not change for the duration—despite this virtual world already jam-packed with trillions of images—until the energy winds down, and all archives become cold stardust fodder.

watching Hells Kitchen

watching Hells Kitchen, Cedaredge, Colorado, June ©2024 hopkins/neoscenes.
watching Hells Kitchen, Cedaredge, Colorado, June ©2024 hopkins/neoscenes.

[ED: The far horizon is a portion of Grand Mesa at over 10,000 ft, and the side of the mesa facing the viewer, an area characterized by numerous landslides, is called “Hells Kitchen.” This is the view from my kitchen. Another note, my property sits on a large alluvial fan (many tens of sq mi) descending from the Mesa and fueled by Surface Creek. The slope of the fan is minus 10-12 degrees from horizontal, as demonstrated from right to left in the photo.]

airport bathroom

Ed: For new subscribers, selecting the red dot in the middle of the map will start the audio sample which can then be controlled using the play-bar and volume/mute (speaker) icon.

Reveil 24-hour live broadcast 2024

Reveil 24-hour live broadcast, online and Cedaredge, Colorado, 04-05 May 2024

neoscenes is again participating in the Reveil global audio streaming project for the tenth year, adding a small sonic expression to this ongoing collaborative broadcast: Reveil 24-hour live broadcast 2024 (one dimension of Soundcamp) 03-05 May (depending on your time zone — see below for exact local times).

Reveil is a collective production by streamers at listening points around the earth. Starting on the morning of Saturday 4 May in South London near the Greenwich Meridian, the broadcast will pick up feeds one by one, tracking the sunrise west from microphone to microphone, following the wave of intensified sound that loops the earth every 24 hours at first light.

Streams come from a variety of locations and situations, at a time of day when many people are unaccustomed to be up and out, but sounds are vivid, especially in Spring. The Reveil broadcast makes room by largely avoiding speech and music, gravitating to places where human and non human communities meet and soundworlds overlap.

Sounds produced by birds, amphibians, weather, fish, electromagnetic fluctuations, people, machines, vegetation, transmission artifacts, convey the variety of planetary soundscapes, captured from many specific places and projects. In the process, Reveil brings together dispersed and lesser known ecological projects and practices across disciplines and time zones, in a sketch of an acoustic commons in the making.

Streams range from temporary projects in people’s homes to large research networks. Each open microphone adds to the diversity of the mix.

You can tune in to the overall 25-hour Reveil stream at the Reveil platform or on Wave Farm Radio or at Resonance Extra.

neoscenes/Reveil 2024 landing page: https://streams.soundtent.org/2024/streams/utc-6_-9b9ee361-46a4-4315-be94-985377df3a5f [active during event only]

Check the time!

  • the time span of the whole event starts at 5 AM London time (UTC+1) Saturday, 04 May until 6 AM on Sunday, 05 May
  • that’s 10 PM Colorado time (UTC-6) Friday, 03 May until 11 PM Saturday, 04 May
  • that’s 12 PM midnight New York time (UTC-4) (Friday night) 04 May until 1 AM Sunday 05 May
  • use the World Clock meeting planner to convert to your local time otherwise…
This Reveil stream, neoscenes’ tenth year participating, comes from the property of friend and artist Jennifer Riefenberg, a tract of land sitting at 6850 ft (2015 m) on a rich riparian corridor along Surface Creek in western Colorado. The nearest village, Cedaredge is a couple miles away. To the northwest, north, and northeast, 10 miles (16 km) as the raven flies, sits Grand Mesa, the largest flat-topped mountain in the world, at 11,000 ft (3300 m). The surrounding property was formerly an agricultural area relying on irrigation waters coming off the Mesa. Before the white colonization in the late 18th century, this area was the Ute tribal homeland: it still is. There is a rich range of wildlife in the area—birds including Bald Eagles (Haliaeetus leucocephalus), Red-tail Hawks (Buteo jamaicensis), Great Horned Owls, Ravens (Corvus corax), Black-billed Magpies (Pica hudsonia), Starlings (Sturnus vulgaris), Western Meadowlarks (Sturnella neglecta), Mountain and Western Bluebirds, Nuthatches, House Sparrows and Finches along with bears, mountain lions, coyotes, mule deer, foxes, raccoons, skunks, marmots, and ground squirrels. Surface Creek, the main drainage for the area, runs on the east side of the property in a shallow valley lined with cottonwood, juniper, box elder, mountain mahogany, 3-leaf sumac, service berry, yarrow, rabbit brush, and volunteer fruit trees. In the sonic foreground there is an irrigation holding pond that sees regular visits of a variety of birds. Early May is a time for maximum snow-melt off the Mesa, and Surface Creek can swell to more than 600 cfs (17 cms)—two orders of magnitude over minimum flow. It typically displays large diurnal variations in flow, depending on the ambient temperatures. The creek flow will be the dominant sonic texture.

The neoscenes stream, hosted on the locusonus soundmap will be live for the entire weekend; it will be selectively broadcast in the Reveil stream as follows:

Date: 06 May 05:50-06:20 AM MDT UTC-6 (this is the approximate time that the neoscenes stream will be mixed into the whole 25-hour stream)

Civil twilight (local time): 5:40 AM / 0538 (UTC-6) Local time in Cedaredge

Sunrise (local time): 6:07 AM / 0606 (UTC-6) Local time in Cedaredge

Location: online and Cedaredge, Colorado, USA

Streamer: John Hopkins / neoscenes

Coordinates: N +38.92349163182399° / W107.91730709264802°
Timezone: MDT UTC-6 — 7 hours behind London

Calculate other time zones