ohai.social team @ohai

**Cascade Pine** @cascadepine@mas.to · Feb 26

Feb 26

Cascade Pine @cascadepine@mas.to

Now that’s a nice block of granite. View from Beckler Peak in July.

A steeply slanted granite cliff face, with one huge block of weathered granite protruding from it. Various conifers grow sparsely from the granite.

#hiking #mountains #pnw

**Rob Pianozzino** @pianozzino.bsky.social@bsky.brid.gy · Feb 13

Feb 13

Rob Pianozzino @pianozzino.bsky.social@bsky.brid.gy

Mazama North Cascades National Park Washington State #cascademountains #mazama #washingtonstate #forest #hiking #mountains #trees #rocks #sky

Mazama
Northern Cascade Mountains
Washington State

**Kayakpatrick** @kayakpatrick@mastodon.sdf.org · Feb 12

Feb 12

Kayakpatrick @kayakpatrick@mastodon.sdf.org

Full moon rising over some sunset alpen glow. #sunset #fullmoon #cascademountains #pnw #seattle

A full moon rising over the sunset illuminated Cascade mountains. Foreground is pinetrees.

**Solarbird** @moira@mastodon.murkworks.net · Feb 4

Feb 4

Solarbird @moira@mastodon.murkworks.net

the mountains are amazing today

#wawx #mountains #snow

**Jeff** @jayemach@pixelfed.social · Jan 26 *

Jan 26 *

Jeff @jayemach@pixelfed.social

A spectacular January day in #Seattle from the 41st floor

#MtTahoma #MtRainier #SpaceNeedle #PugetSound #OlympicMountains #LakeUnion #Kulshan #MtBaker #CascadeMountains

Looking south through the skyscrapers of downtown Seattle, crystal blue, cloudless skies above. The snow-covered Mt. Tahoma is in the distance, capped off with a lenticular cloud

A view to the west between skyscrapers. The Space Needle stands in the center with the dark blue waters of the Puger Sound behind and the snow-capped Olympic Mountains on the horizon.

A view looking north over the low buildings of South Lake Union, Lake Union, and the northern neighborhoods of Seattle. Bright white, snow-covered Kulshan is centered in the far distance. The northern Cascade Mountains with snowy Whitehorse Mountain and Three Fingers form the horizon of the right half of the photo.

#cascademountains #mtkulshan

**Greg Cocks** @GregCocks@techhub.social · Jan 21 *

Jan 21 *

Greg Cocks @GregCocks@techhub.social

Atop The Oregon Cascades, [Research] Team Finds A Huge Buried Aquifer
--
https://www.eurekalert.org/news-releases/1069774 <-- shared technical article
--
https://doi.org/10.1073/pnas.2415155122 <-- shared paper
--
https://www.usgs.gov/centers/oregon-water-science-center/science/mckenzie-river-source-water-study <-- shared USGS technical article, 2011, ‘McKenzie River Source Water Study’
--
https://youtu.be/6R8e5HwGMwU?si=sniW4bvvzzviTYie <-- shared media video overview
--
#GIS #spatial #mapping #model #modeling #water #hydrology #Oregon #Cascades #CascadeMountains #PNW #PacificNorthwest #volcanic #rocks #aquifer #waterresources #watermanagement #climatechange #snowpack #drought #spatialanalysis #CriticalZone #geohazards #geology #engineeringgeology #landscapes #weathering #bedrock #holocene #groundwater #structuralgeology #orogeny #remotesensing #geophysics #sampling #drilling #porosity #permability #tomography #lava #spring #seep #breccia #discharge #streams #runoff #precipitation #climate #rainfall #recharge

photo - Scientists examine a large-volume spring in young volcanic rocks of the McKenzie River watershed on the west side of the Cascade topographic crest that was monitored as part of this study. Credit: Benjamin Nash

map, photo and charts - (A) Electrical resistivity tomography of Olallie North Spring, which emerges along a flow contact of _25 ka Scott Mountain lava flows. Lateral variations correspond to spring discharge points along the lava flow basal breccia such as depicted in (B) (photo: Benjamin Nash). (C) Mean of total yearly range in discharge _Q divided by mean annual flow Qavg versus average upstream age for springs and streams. The horizontal line defines “spring-” versus “runoff-” dominated. (D) SD of yearly average summer discharge (June–September), normalized by Qavg, with CZ state shift labeled.

$maps and chart - (A) Distribution of geothermal drill holes. Thin black circles’ radii scale with total logged length, and colors indicate the fraction of length for which dT=dz < 20_C/km (implying downward flux of meteoric water). Red circles are the fraction with inverted gradients (dT=dz < 0_C/km). The purple contour indicates bedrock ages <2 Ma, while stars mark Holocene age phreatomagmatic eruption vents. (B) Two example temperature-depth logs from deep wells in old and young bedrock. (C) Porosity (blue) and resistivity (orange) in the Santiam Pass drill hole SP 77-24. Dashed lines indicate low porosity at high measured resistivity. (D) Chemical weathering tracked by oxidation state of iron in the Santiam Pass drill hole. The green box indicates range of Quaternary High Cascades lavas (SI Appendix), indicating that much of the SP 77-24 hole has been oxidized.$

maps and cross section - Oregon Cascades study site. (A) Topography, rivers (from USGS blue lines), stream gauges, lakes, and faults. Olallie North Spring (ONS) and HJ Andrews Experimental Forest (HJA) are labeled. (B) Surface bedrock ages (18), geothermal drill holes, and Quaternary volcanic vents (19). Labeled vents exhibited Holocene phreatomagmatic activity: Sand Mountain volcanic field (SMF), Blue Lake Crater (BLC), Twin Craters (TC). Gray areas are mapped as “Sedimentary deposits and rocks” in ref. 18. (C) Cross-section of swath topography and surface bedrock ages (N-S average of _4 km from Santiam Pass, pink box in panel A), with subsurface structures based on published geologic maps (SI Appendix). The proposed Critical Zone (CZ) state shift and physiographic “Western” and “High” Cascade provinces are labeled. (D) Temperature gradient versus depth in drill holes from panel (C). Near-isothermal or inverted temperature gradients define the “rain curtain.”

**Solarbird** @moira@mastodon.murkworks.net · Jan 2 *

Jan 2 *

Solarbird @moira@mastodon.murkworks.net

I liked this shot I took last week and forgot to post.

a low landscape seen between trees, beyond which is a long line of very snowy mountains in the distance.

#landscape #northshore #seattle

**Andrew Flenniken Photography** @aflennikenphoto@vivaldi.net · Nov 9, 2024

Nov 9, 2024

Andrew Flenniken Photography @aflennikenphoto@vivaldi.net

Winter is coming.

In the Cascades the trees are mostly bare, with only patches and pops of color remaining. Snow is beginning to collect on the peaks and slowly advance down the slopes.

Late in the day today, I decided to drive out Highway 2. We'd been having on and off sun all day, and I thought maybe I'd catch a sunset in the mountains with some red clouds.

It didn't turn out that way, but I flew the drone and got this shot, which I'm reasonably happy with.

In other news: My store now accepts customers from, and ships to, Canada! Or it should, if I have everything configured right. If you're in Canada and run into issues, let me know.

Gear: DJI Mini 3 Pro

Cross-posted from my blog: https://andrewflenniken.com/2024/11/08/november-8th-2024-winter-is-coming/

Color photo. A river extends up from the bottom of the frame, turning a corner to the right at mid-frame. On either side are bare trees, the hills above them dark with evergreens. At the top of the frame is a line of snow-capped mountains.

#Photography #AerialPhotography #DronePhotography

**Heath Arcadia** @heatharcadia@worldtravel.photos · Oct 28, 2024

Oct 28, 2024

Heath Arcadia @heatharcadia@worldtravel.photos

For #MountainMonday, here are Mt. Hood and Mt. Jefferson as seen from my neighborhood at dusk on October 14. This was the clearest I had seen either mountain in awhile.

A zoomed in picture of a distant snow-covered mountain, pink and purple with the evening light. Its peak is obscured by a lenticular cloud. The sky is otherwise mostly clear and is shades of yellow and orange. The foreground is full of trees and one cell tower to the left.

A zoomed in picture of a distant mountain with a jaggy peak. The mountain is pink and purple in the evening light, while the sky behind is clear and yellow and orange. In the foreground, powerlines and an apartment building can be seen, along with trees.

#mountains #sunset #dusk

**Andrew Flenniken Photography** @aflennikenphoto@vivaldi.net · Sep 16, 2024

Sep 16, 2024

Andrew Flenniken Photography @aflennikenphoto@vivaldi.net

On Saturday, a friend reached out and asked "Planning on doing the Snow Lake trail on Sunday, would you like to join?"

It's... been a hot minute since I hiked regularly, and I'm not as fit as I was then, but this seemed like it might be do-able (just). Also, taking my camera up to a lake in the aptly named Alpine Lakes Wilderness? Natural beauty is a motivator for me, always. I like to say it's my eyes that are taking a hike, and the rest of me is just along for the ride. :P Exercise is thus a happy side effect.

So I said yes, and off we went on Sunday. It was, indeed, just doable for me where I am right now. I definitely feel, today, like I Did a Thing.

And it was worth it, even with the clouds. In fact, I like locations like this just as much in the clouds as I do in sun. When the clouds are at the right height and you can see them interacting with the mountains. Ridges and trees shrouded in mist? Yes, please. That's something that always says "Pacific Northwest" to me, and is a reason I love living here.

Gear: Nikon Z7 II, Nikon Z 24-70mm f2.8 S

Cross-posted from my blog, where there are additional photos: https://andrewflenniken.com/2024/09/16/september-16th-2024-snow-lake/