tag:blogger.com,1999:blog-4953008377950396317.post7142082889015922259..comments2024-03-28T17:51:54.421-07:00Comments on SearchReSearch: SearchResearch Challenge (9/23/20): Digging deeper into the story behind a photo?Dan Russellhttp://www.blogger.com/profile/13603209997260423532noreply@blogger.comBlogger13125tag:blogger.com,1999:blog-4953008377950396317.post-21824243204264055582020-09-30T12:55:38.052-07:002020-09-30T12:55:38.052-07:00Great observations! Great observations! Dan Russellhttps://www.blogger.com/profile/13603209997260423532noreply@blogger.comtag:blogger.com,1999:blog-4953008377950396317.post-64200000947874572442020-09-30T12:54:54.280-07:002020-09-30T12:54:54.280-07:00Awesome quote... "delicately undressing the h...Awesome quote... "delicately undressing the heavens..." Thanks. Dan Russellhttps://www.blogger.com/profile/13603209997260423532noreply@blogger.comtag:blogger.com,1999:blog-4953008377950396317.post-18149453391316345142020-09-28T11:06:26.830-07:002020-09-28T11:06:26.830-07:00The rusty little "L" shape on the corner...The rusty little "L" shape on the corner of the access road and the channel. After much cogitation I believe that it is to mitigate the washout effects from the downhill rush of water from overtopping the containment wall. Should this happen more debris would be washed back into the channel. I see now that I was already thinking along this line last week and have now returned to it. This is a good project. jon tUjonhttps://www.blogger.com/profile/06450649073262987652noreply@blogger.comtag:blogger.com,1999:blog-4953008377950396317.post-52146573260576062352020-09-24T15:48:47.521-07:002020-09-24T15:48:47.521-07:002. That channel runs from the Sawpit Debris Basin....2. That channel runs from the Sawpit Debris Basin. Periodically there is a lot of dirty debris laden water running. The nice rounded rocks that have been trapped there indicate, to me, a goodly force of flowing water. Likely there is floating logs and such going by. Perhaps that iron reinforcement on the corner is protection from logs and kayakers. or to deflect water from rushing over that corner?jonhttps://www.blogger.com/profile/06450649073262987652noreply@blogger.comtag:blogger.com,1999:blog-4953008377950396317.post-17395310961507171632020-09-24T15:16:57.472-07:002020-09-24T15:16:57.472-07:00It is not unusual.
For this Challenge I turned to...It is not unusual.<br /><br />For this Challenge I turned to my cloud bible: Written by Gavin Pretor-Pinney Founder and president of the Cloud Appreciation Society. (I am a member) The book is appropriatly titled 'The Cloudspotter's Guide' Page 271 has an image just like yours. Mr P-P has this to say: Contrails are both interesting to observe often very beautiful. When the air at cruising altitude is unstable, for instance, trails can form teeth of cloud below them, making them look like half of a zipper - as if the aircraft is delicately undressing the heavens with its progress across the skiy."<br /><br />The cause maybe: http://www.extrospection.com/archives/2004/01/the_crow_instability.html<br />Some searching online tells us that this is caused by the so-called Crow Instability in the vortexes caused by aircraft; whilrling the otherwise straight contrails into spirals then donut-shaped rings. More about this in Scientific American:<br /><br />The mixing gases contained in the contrail rotate with respect to the ambient air. These regions of rotating flow are called vortices. (Any sharp surface, such as the tip of a wing, can cause vortical flow in its wake if it is sufficiently large or the flow is sufficiently fast.) On occasion, these trailing vortices may interact with one another.<br />In one well-known example of this fact, the Crow Instability causes the vortices to develop symmetric sinusoidal oscillations and eventually to merge and form vortex rings behind the jet. This instability can be triggered by turbulence in the surrounding air or by local variation in air temperature or density, which may itself be the result of the stratification of the atmosphere. When the contrails are visible and strong, it is possible to see the white streaks become wavy and then leave rings floating high in the sky, like smoke rings from a giant cigar.jonhttps://www.blogger.com/profile/06450649073262987652noreply@blogger.comtag:blogger.com,1999:blog-4953008377950396317.post-51086879842177651872020-09-24T06:09:25.782-07:002020-09-24T06:09:25.782-07:00[meteorological cloud atlas]
Searched for contrai...[meteorological cloud atlas]<br /><br />Searched for contrails:<br /><br /><a href="https://cloudatlas.wmo.int/en/search.html?keyword=contrails" rel="nofollow">Atlas</a><br /><br /><a href="https://cloudatlas.wmo.int/en/aircraft-condensation-trails.html" rel="nofollow">Aircraft condensation trails...Homogenitus</a><br /><br /><a href="https://cloudatlas.wmo.int/en/homomutatus.html" rel="nofollow">Homomutatus</a><br /><br />For Q2, I haven't found anything.<br /><br />My last query was [California concrete channels] searching with your image.<br /><br /><a href="https://alumni.berkeley.edu/california-magazine/just-in/2014-12-11/trouble-when-rain-comes-californias-concrete-flood-channels" rel="nofollow">2013: Trouble When Rain Comes: California’s Concrete Flood Channels are Decaying</a>Ramon Gonzalezhttps://www.blogger.com/profile/16129830563029534511noreply@blogger.comtag:blogger.com,1999:blog-4953008377950396317.post-37208060820109222172020-09-24T03:58:40.970-07:002020-09-24T03:58:40.970-07:00Just thought, what direction is the flow of the cu...Just thought, what direction is the flow of the culvert, the concrete might well be to stop it flowing over the wall as it vortex's into theside channelScayshttps://www.blogger.com/profile/02621793596862811354noreply@blogger.comtag:blogger.com,1999:blog-4953008377950396317.post-40072091199518780322020-09-24T03:56:23.232-07:002020-09-24T03:56:23.232-07:00I am so like you, I research so many things a hang...I am so like you, I research so many things a hang on from being a lecturer in Construction Technology, the vapout trail with little blobs is more than lkely the vapour catching upward air currents at one edge, the concrete shape I can only think is is some form of boat bumber, casting it would be a pain. The channel is as you say a storm overflow, the ground is so dry, runoff is huge so to prevent major flooding these chanels help to steer water away quickly. I use the google meta data for so much, linking to google Earth , street view and as part of CAD, Scayshttps://www.blogger.com/profile/02621793596862811354noreply@blogger.comtag:blogger.com,1999:blog-4953008377950396317.post-9494711566469467662020-09-23T23:03:59.174-07:002020-09-23T23:03:59.174-07:00Our best bet is that it's some kind of protect...Our best bet is that it's some kind of protective structure to keep debris from ramming that corner during a flash flood, as its downstream from the debris basin. Elizabethhttps://www.blogger.com/profile/03338464400018233640noreply@blogger.comtag:blogger.com,1999:blog-4953008377950396317.post-52462152407800562292020-09-23T17:41:16.059-07:002020-09-23T17:41:16.059-07:00Regarding "not normal": I think there i...Regarding "not normal": I think there is confusion regarding normal vs different. The vast majority of us are normal in different ways. And that's the joy. Imagine how boring and difficult life would be if we were all the same, liked all the same things, wanted to live in the same place ...cmrt1014https://www.blogger.com/profile/00449939923974427881noreply@blogger.comtag:blogger.com,1999:blog-4953008377950396317.post-16681225880795466382020-09-23T15:33:58.166-07:002020-09-23T15:33:58.166-07:00lobes or mammas
source pdf
another Dan
the channe...<a href="https://rmets.onlinelibrary.wiley.com/doi/full/10.1002/wea.2765" rel="nofollow">lobes or mammas</a><br /><a href="https://rmets.onlinelibrary.wiley.com/doi/pdfdirect/10.1002/wea.2765" rel="nofollow">source pdf</a><br /><a href="https://www.simpsoncity.com/hiking/monrovia.html" rel="nofollow">another Dan</a><br /><br />the channel… looks like a boat bumper next to the launch ramp… for when there is water in the channel<br /><a href="https://tinyurl.com/yxfbus9b" rel="nofollow">bumpers</a>remmijhttps://www.blogger.com/profile/17985809654574916217noreply@blogger.comtag:blogger.com,1999:blog-4953008377950396317.post-21945582218746491052020-09-23T14:47:18.157-07:002020-09-23T14:47:18.157-07:00[ Blob Contrails]
Contrail lobes or mamma
Scienc...[ Blob Contrails]<br /><br /><a href="https://rmets.onlinelibrary.wiley.com/doi/full/10.1002/wea.2765" rel="nofollow">Contrail lobes or mamma</a><br /><br /><a href="https://www.sciencedirect.com/topics/earth-and-planetary-sciences/contrail" rel="nofollow">ScienceDirect</a>Ramon Gonzalezhttps://www.blogger.com/profile/16129830563029534511noreply@blogger.comtag:blogger.com,1999:blog-4953008377950396317.post-50650505043115294442020-09-23T12:21:06.013-07:002020-09-23T12:21:06.013-07:001. Contrails:
[Types of contrails] and [ Poof con...1. Contrails:<br /><br />[Types of contrails] and [ Poof contrails]<br /><br /><a href="https://www.faa.gov/about/office_org/headquarters_offices/apl/noise_emissions/contrails/" rel="nofollow">FAA Contrails 101</a><br />Contrail: A condensation trail, a cirrus like trail of water vapor. More information on the site<br /><br />There are 3 kinds:<br /><br /><a href="https://www.windows2universe.org/earth/Atmosphere/clouds/contrails_3types.html" rel="nofollow">short-lived, persistent non-spreading, and persistent spreading.</a><br /><br /><a href="https://www.boldmethod.com/learn-to-fly/weather/contrails/" rel="nofollow">How coldtrains form?</a><br />Aircraft can generate both aerodynamic contrails and exhaust contrails.Aircraft can produce both types of contrails at the same time<br /><br />Also visited the Wikipedia article on contrails and found:<br /><br /><a href="https://en.wikipedia.org/wiki/Contrail" rel="nofollow">Distrails & Climate around contrails</a> I think I haven't seen a distrail in real life yet. Article external links mentions site to debunking contrails weird stories<br /><br /><a href="https://contrailscience.com/" rel="nofollow">Contral Science </a><br /><br /><a href="https://www.youtube.com/watch?v=5bpQ9-IQffw" rel="nofollow">What Really Causes Chemtrails? YouTube Video</a><br /><br />Also searched [tipos de estelas aviones] to find information in Spanish<br /><br /><a href="https://twitter.com/meteosojuela/status/1111364651424583682" rel="nofollow">Contrails formation (video)</a><br /><br />Searching on Twitter [contrails meteosojuela] shows beautiful photos and videosRamon Gonzalezhttps://www.blogger.com/profile/16129830563029534511noreply@blogger.com