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 landscape scale erosion instabilities in the northern gabilan mesa california
landscape-scale erosion instabilities in the northern gabilan mesa, california

If you ever fly from L.A. to San Francisco, California, you may notice the Gabilan Mesa off to the east as you begin your descent into San Francisco International Airport. If you look carefully, you might notice two strange things: a series of bleach-white scars, where rock outcrops disrupt the smooth, grassy hillslopes, and a strong asymmetry in the orientation of tributaries, with many flowing south and few flowing north.

landscape-scale erosion instabilities in the northern gabilan mesa, california

Boulder, Colo., USA: If you ever fly from L.A. to San Francisco, California, you may notice the Gabilan Mesa off to the east as you begin your descent into San Francisco International Airport. If you look carefully, you might notice two strange things: a series of bleach-white scars, where rock outcrops disrupt the smooth, grassy hillslopes, and a strong asymmetry in the orientation of tributaries, with many flowing south and few flowing north. What you can't see is the few feet of soil that would lie beneath your feet if you were standing on the surface -- but it turns out that soil column may have a lot to do with shaping your 10,000-foot view.Over long time scales, the transition from hillslopes to channels is controlled by the relative efficiencies of soil transport and channel erosion

study predicts significant southern california beach erosion

More than half of Southern California's beaches could completely erode back to coastal infrastructure or sea cliffs by the year 2100 as the sea level rises, according to a study released Monday.

pasture management and riparian buffers reduce erosion

Sediment is the number one pollutant in U.S. waterways. Over grazing can increase soil erosion from pastures as well as sediment loading into aquatic systems. Grazing management and buffer strips may reduce erosion, however, few studies evaluating these practices have been reported.

cover crop prevents weeds, protects soil

Organic farmers have to make hard choices between protecting soil from erosion and controlling weeds. For example, large-scale organic farming relies heavily on tillage. Tilling breaks up the soil to kill weeds and prepare for planting. But intense tillage can compact soil, cause erosion, and deplete nutrients. As a result, some organic farmers are turning to cover crops for weed control.

boulder b-cycle adds station at boulder junction, moves another to table mesa

Boulder B-Cycle has added a new station near Boulder Junction and moved another to the Table Mesa Park-N-Ride, according to a news release.The Boulder Junction station will be located in the Boulder Junction transit depot plaza next to the Hyatt Place Boulder Pearl hotel.B-Cycle is also moving a bike station that was at 27th Way and Broadway to the Table Mesa Park-N-Ride to serve regional bus passengers.Mitchell Byars: 303-473-1329, [email protected] or twitter.com/mitchellbyars.Advertisement

america's dam crisis—was oroville just a drop in the bucket?

Damage to Oroville Dam Spillway. Credit: Wikimedia CommonsLast February, record storms and snowmelt threatened to overwhelm the two spillways of California's Oroville reservoir, the tallest dam in the United States. With less than an hour's notice, nearly 200,000 people were evacuated from downstream towns and cities. In the end, emergency measures prevented a full-scale catastrophe; California officials are now working feverishly to shore up the dam before next year's rainy season.
But while the Oroville crisis has been averted for the moment, water experts at the Earth Institute's Columbia Water Center say that the near miss may be a harbinger of things to come—and not just for Oroville."There's a list of some 15,000 dams that are classified as 'high-hazard' in the U.S.," says Columbia

clean energy: how batteries can revolutionize energy

All over California, there's evidence of the state's goal to lead the country in renewable energy. Enormous farms of shiny solar panels have popped up across southern California, and gigantic wind turbines dot the landscape outside nearly all the major cities. There are less flashy—and less visible—investments in renewables going on, too. Tucked away in warehouses, trailers and industrial parks are lithium ion batteries that, if all goes well, will play a critical role in helping California hit its ambitious target: to have 50% of all electricity come from renewables by 2050.Some green energy sources come with a built-in challenge: the wind and the sun can't be turned on and off at will. When it's windy and sunny, an abundance of energy may be harnessed—but any excesses go to waste. That's

adani seeks additional surface water to feed giant coal mine

The scale of water demand from Adani's giant coal mine in Queensland appears to be larger than expected, as the company seeks approval for a large, additional flood-harvesting dam.As Fairfax Media revealed, the company's proposed Carmichael coal mine in the Galilee Basin was last week controversially granted uncapped access to the groundwater in a licence that expired in 2077. Anna Bligh on 'erosion of trust' in banksVideo duration01:33Previous slideNext slideVideo duration01:51The future of energy in AustraliaThe future of energy in AustraliaCoal has dominated the National Energy Market, but the closure of Hazelwood power station heralds a potential transition to renewables.Anna Bligh on 'erosion of trust' in banksVideo duration01:33Video duration01:33Anna Bligh on 'erosion of trust' in b

adani seeks additional surface water to feed giant coal mine

The scale of water demand from Adani's giant coal mine in Queensland appears to be larger than expected, as the company seeks approval for a large, additional flood-harvesting dam.As Fairfax Media revealed, the company's proposed Carmichael coal mine in the Galilee Basin was last week controversially granted uncapped access to the groundwater in a licence that expired in 2077. Anna Bligh on 'erosion of trust' in banksVideo duration01:33Previous slideNext slideVideo duration01:51The future of energy in AustraliaThe future of energy in AustraliaCoal has dominated the National Energy Market, but the closure of Hazelwood power station heralds a potential transition to renewables.Anna Bligh on 'erosion of trust' in banksVideo duration01:33Video duration01:33Anna Bligh on 'erosion of trust' in b

drivers of insecticide use | eurekalert! science news

IMAGE: This is Ashley Larsen and Frederik Noack.
view more Credit: Spencer BruttigOver the past half century, food production has intensified to meet the growing demand. And as agricultural fields have become ever larger, more pesticides are required to enhance yield.Among increasingly huge spreads of single crops, insects tend to thrive as the landscape leaves little habitat for natural enemies such as birds or other predators. But whether this plays out in reality has been difficult to determine scientifically.To date, empirical landscape-scale studies of the drivers of agricultural insecticide use have produced ambiguous results. Yet data-driven approaches have been fraught with their own problems: namely, aggregated statistics that make it difficult to tease apart the effects of unde

timing of cover crop rolling is key

Organic farmers can use a combination of cover crops and no-till methods to improve soil health, suppress weeds, and retain moisture, suggests a new report. (Science Daily)Organic farmers have to make hard choices between protecting soil from erosion and controlling weeds. For example, large-scale organic farming relies heavily on tillage. Tilling breaks up the soil to kill weeds and prepare for planting. But intense tillage can compact soil, cause erosion, and deplete nutrients. As a result, some organic farmers are turning to cover crops for weed control.Cover crops improve the soil with living roots that protect it from erosion and add nutrients. Cover crops are usually plowed down, but another option is flattening the cover crop to form a thick carpet, or mat. They do this with a rolle

how nanoparticles affect flow through porous stuff in surprising ways

Countours of c_a and c_n at two nanoparticle deposition rates at t=400. Credit: Dastvareh and Jalel AzaiezThose who have mixed oil and vinegar may have unknowingly observed a strange fluid phenomenon called fingering instability. A type of this phenomenon, called viscous fingering (VF), occurs in porous media where fluids of differing viscosity converge in finger-shaped patterns as a result of growing disturbances at the interface.
Such instabilities are encountered in a wide variety of fields. For applications like the oil recovery process, or contaminant transport in soil, where a fluid is injected to displace oil or contaminants, a uniform fluid front is required to achieve the highest volumetric sweep and effectiveness, making such instabilities undesirable.On the other hand, in micr

grab the withings body scale for $68, the lowest ever

The Withings Body scale is the successor the original Withings WS-50 smart scale. It provides extremely accurate weight, BMI, body fat, muscle, bone mass, and water measurements because of a new technology from Withings called “Position Control Technology.”This scale is capable of capturing all the data listed above and then wirelessly transmitting it o your iPhone via the company’s own Withings app or through a variety of health apps including MyFitnessPal and, of course, Apple’s Health app. The scale can recognize up to 8 different users and can automatically tell who is who once they step on the scale. It also tells you the weather every time you get on the scale, a nice bonus if you’re someone who weighs themselves every morning.All-in-all, the Withings Body scale is a pretty sweet sca

more than 100 years of flooding and erosion in 1 event

IMAGE: Flood impacts in the North St. Vrain Creek catchment, northern Colorado, USA.
view more Credit: Images in D and E are from Google Earth™Boulder, Colo., USA: Sara Rathburn of Colorado State University and colleagues have developed an integrated sediment, wood, and organic carbon budget for North St. Vrain Creek in the semi-arid Colorado Front Range following an extreme flooding event in September of 2013. Erosion of more than 500,000 cubic meters, or up to ~115-years-worth of weathering products, occurred through landsliding and channel erosion during this event. More than half of the eroded sediment was deposited at the inlet and delta of a water supply reservoir, resulting in the equivalent of 100 years of reservoir sedimentation and 2% loss in water storage capacity. The flood d

a piece of dutch paradise: islands for sale on vinkeveen lakes

Photo: Holland.comDozens of tiny islands in a region of recreational lakes south of Amsterdam are due to come up for auction next month, the Volkskrant reported on Thursday.The 44 islands – in reality strips of land left over after peat cutting – will be sold off to boat lovers who want to get away from it all on the Vinkeveense Plassen lakes. No price has yet been set, but ones that are currently privately owned fetch prices of between €10,000 and €50,000.The sale has been prompted because the owners of the lakes –  Amsterdam, De Ronde Venen council and the province of Utrecht – are no longer willing willing to assume the cost of shoring up the islands which are slowly being eroded.Prospective owners must take carry out repair work as part of the deal.Erosion‘We are having problems combat

perth set for weekend drenching

With rain absent for most of autumn, wet weather is finally here and it shows no signs of slowing with Perth set to get drenched in up to 60 millimetres of rain from Friday through to Sunday.The week started with bustling conditions, with rain and strong wind warnings in place for Perth, Lancelin, Bunbury, Geographe and the Leeuwin coast on Monday, according to the Bureau of Meteorology.Waterfront homes under erosion threat Video duration00:45Previous slideNext slideVideo duration00:32Is winter coming? Is winter coming? Will the rain be sticking around for Western Australia? Waterfront homes under erosion threat Video duration00:45Video duration00:45Waterfront homes under erosion threat Waterfront homes under erosion threat Confronting hazard maps showing how erosion will affect homes in L

ever wonder why sony phones in us have fingerprint sensors disabled?

Don Mesa, Head of Marketing of North America for Sony Mobile US, explains – once more – why the company disables fingerprint sensors in Xperia devices launching in the US. The bottom line is that while Sony’s justification is still as vague as ever, it probably has something to do with patent issues.See also:Sony Xperia XZ Premium & XZs hands-on!16 hours agoAfter the Xperia Z3, Sony simply stopped selling its smartphones through carriers here in the US. It quickly transitioned into selling unlocked phones, and according to Mesa, fingerprint scanners were just something that the company had to leave out. In fact, if you look at devices like the Xperia Z5 or even the newly announced Xperia XZ Premium, the units that are sold in the US have their fingerprint sensors disabled via software. Tha

ever wonder why sony phones in us have fingerprint sensors disabled?

Don Mesa, Head of Marketing of North America for Sony Mobile US, explains – once more – why the company disables fingerprint sensors in Xperia devices launching in the US. The bottom line is that while Sony’s justification is still as vague as ever, it probably has something to do with patent issues.See also:Sony Xperia XZ Premium & XZs hands-on!13 hours agoAfter the Xperia Z3, Sony simply stopped selling its smartphones through carriers here in the US. It quickly transitioned into selling unlocked phones, and according to Mesa, fingerprint scanners were just something that the company had to leave out. In fact, if you look at devices like the Xperia Z5 or even the newly announced Xperia XZ Premium, the units that are sold in the US have their fingerprint sensors disabled via software. Tha

air pollution may disrupt sleep

ATS 2017, WASHINGTON, DC--High levels of air pollution over time may get in the way of a good night's sleep, according to new research presented at the ATS 2017 International Conference."Prior studies have shown that air pollution impacts heart health and affects breathing and lung function, but less is known about whether air pollution affects sleep," said lead author Martha E. Billings, MD, MSc, assistant professor of medicine at the University of Washington. "We thought an effect was likely given that air pollution causes upper airway irritation, swelling and congestion, and may also affect the central nervous system and brain areas that control breathing patterns and sleep."The researchers analyzed data from 1,863 participants (average age 68) in the Multi-Ethnic Study of Atheroscleros

study predicts significant southern california beach erosion

More than half of Southern California's beaches could completely erode back to coastal infrastructure or sea cliffs by the year 2100 as the sea level rises, according to a study released Monday.
Using a new computer model to predict shoreline effects caused by the rise of sea levels and changes in storm patterns from climate change, the research found that with limited human intervention, 31 percent to 67 percent of the beaches could vanish over the next eight decades with sea-level rises of 3.3 feet (1 meter) to 6.5 feet (2 meters).Human efforts will likely need to increase to preserve the beaches, study lead author Sean Vitousek said in a statement."Beaches are perhaps the most iconic feature of California, and the potential for losing this identity is real," he said. "The effect of Ca

researchers discover dust plays prominent role in nutrients of mountain forest e

IMAGE: Researchers install passive dust collectors at the San Joaquin Experimental Range site in the southeastern Sierra Nevada.
view more Credit: Sarah AciegoFor decades, scientists have known that tropical places like Hawaii, with lush landscapes and vegetation, nutritionally benefit from the dust that blows from Asia. However, results of a new study -- headed by University of Wyoming researchers -- demonstrate that dust also can drive the evolution of nutrient budgets in mountainous forest ecosystems.
The study shows that dust also may be crucial in mountainous forest ecosystems, dominating nutrient budgets despite continuous replacement of depleted soils with fresh bedrock via erosion. Directly quantifying the importance of dust, which is sensitive to changes in climate and land use

california high court places more limitations on arbitration agreements

The California Supreme Court recently held that an arbitration agreement can't be used to waive the right to seek public injunctive relief under state law. This means employers should carefully review their arbitration agreements for compliance, especially since California law is sometimes at odds with the federal policy favoring arbitration.The state high court's ruling in McGill v. Citibank, N.A., No. S224086, Cal. (April 6), underscores the trend in California to resist the U.S. Supreme Court's favorable view of resolving certain disputes through arbitration instead of in court. McGill involves a consumer arbitration agreement, but the case has important takeaways for employers.The case highlights the constantly shifting legal landscape surrounding arbitration, said Johnny Yeh, an attor

family first candidate lucy gichuhi in senate box seat after high court rules el

A Kenyan-born lawyer placed in an unwinnable position on the Senate ballot paper at last year's election is expected to enter Parliament after the High Court ruled former Family First senator Bob Day was ineligible to be elected.The High Court on Wednesday ruled that Mr Day had an inappropriate pecuniary interest with the Commonwealth because of the ownership structure of his Adelaide electorate office. He was ineligible to sit as a senator for South Australia from February 26, 2016, the court found. Anna Bligh on 'erosion of trust' in banksVideo duration01:33Previous slideNext slideVideo duration00:55Senate spot made vacantSenate spot made vacantThe High Court has ruled Bob Day's election invalid so who will replace him?Anna Bligh on 'erosion of trust' in banksVideo duration01:33Video dur

scott morrison eyes $4 billion budget bonus from resources price boom

Treasurer Scott Morrison is eyeing a $4 billion bonus from booming iron ore and coal prices, a month out from the May 9 budget, and is likely to plough it back into reducing the federal deficit.Government MPs familiar with budget deliberations confirmed to Fairfax Media that forecast deficits of $36.5 billion in 2016-17 and $28.7 billion in 2017-18 could come in lower than expected.Anna Bligh on 'erosion of trust' in banksVideo duration01:33Previous slideNext slideVideo duration00:22Dear ScoMo, it's a matter of trust.Dear ScoMo, it's a matter of trust.Cartoonist Matt Davidson examines Scott Morrison's credibility problem ahead of the 2017 budget.Anna Bligh on 'erosion of trust' in banksVideo duration01:33Video duration01:33Anna Bligh on 'erosion of trust' in banksAnna Bligh on 'erosion of

'substantial' rain to end city's relatively dry spell

Sydney's sparkling mid-May conditions will make way later this week for the city's wettest spell in more than a month as a large low pressure system sweeps across southern Australia.The good news, though, is both Wednesday and most of Thursday should remain dry and there is no sign of a cold front to knock temperatures back to average levels for May.Research voyage set to uncover Australia's eastern abyssVideo duration01:35Previous slideNext slideVideo duration00:43Three days of rain coming for SydneyThree days of rain coming for SydneyFollowing an unseasonably dry six-week spell, Sydney will see a change in weather on Thursday. Research voyage set to uncover Australia's eastern abyssVideo duration01:35Video duration01:35Research voyage set to uncover ...Research voyage set to uncover Aust

when bridges collapse: stanford researchers study whether we're underestimating

IMAGE: Of 35 bridge collapses analyzed, floods caused 13, erosion of sediments around bridge foundations -- scour -- caused 16, a hurricane caused 1 and other influences (such as waterborne or...
view more Credit: Flint, et al.The United States is considering a $1 trillion budget proposal to update infrastructure, including its crumbling bridges. An obstacle to spending the money wisely is that the current means of assessing bridges may underestimate their vulnerability, according to a new study published in the Journal of Infrastructure Systems. Case in point is a bridge along California's iconic Big Sur coast, which collapsed in March, isolating communities and costing local businesses millions of dollars. Although California's recent unprecedented rains were likely to damage infrastru

researchers demonstrate that current models underestimate role of subsurface gro

A team of international researchers led by University of Freiburg hydrologist Dr. Andreas Hartmann suggests that inclusion of currently missing key hydrological processes in large-scale climate change impact models can significantly improve our estimates of water availability. The study shows that groundwater recharge estimates for 560 million people in karst regions in Europe, the Middle East and Northern Africa, are much higher than previously estimated from current large-scale models. The scientists have shown that model estimates based on entire continents up to now have greatly underestimated in places the amount of groundwater that is recharged from fractions of surface runoff. This finding suggests that more work is needed to ensure sufficient realism in large-scale hydrologic model

get the best smart scale from withings for 40% off

The Withings Body Cardio Wi-Fi scale is capable of measuring your BMI, body fat, muscle, bone mass and water measurements better than any other smart scale out there. In fact, it’s the only scale that can do all of these measurements.It transfers data between to your phone using Wi-Fi and can use Apple’s built-in Health app to keep track of your measurements. It’s rated 4-stars from over 200 reviews on Amazon with most users being very satisfied with the scale.What’s also cool is that this scale works with up to eight different people and somehow it knows exactly who’s on the scale.  This means that even if you have a pretty large family, you don’t have to get multiple scales.Here’s what one reviewer had to say:This scale is freaking awesome. It arrived faster than expected. Mine is black,

more genes turned on when plants compete

EAST LANSING, Mich. - Some people travel to northern California for wine. However, Maren Friesen, Michigan State University plant biologist, treks to the Golden State for clover.The lessons of plant diversity and competition learned from a clover patch, which are featured in a special issue of the Journal of Ecology, can potentially unlock secrets on plant interactions around the globe."There's something quite special in how clover assemble such diverse communities. They compete, yet they have many traits in common due to shared ancestry," Friesen said. "Native Californian Trifolium represents a special system for understanding competitive interactions among close relatives. We'd like to understand their processes of diversity before they're all gone."These special patches of clover are lo

myanmar: northern rakhine flash update no. 1 (as of 8 march 2017) - myanmar

HighlightsLatest estimates indicate that about 94,000 people remain displaced (either in Bangladesh or within northern Rakhine) as a result of the 9 October attacks and subsequent security operations.Humanitarian organizations in Bangladesh estimate that over 74,000 people have crossed the border into Bangladesh since October and remain in the Cox’s Bazaar area.An estimated 20,000 people remain internally displaced in northern Rakhine.Restrictions on humanitarian access (particularly for international staff, who are mostly still not being permitted to work outside the main towns of Maungdaw and Buthidaung) are compromising the quality of the life-saving assistance and other services humanitarian organizations can provide.Situation OverviewAccess restrictions have constrained the ability of

get withings body cardio smart wifi scale for 40% off

The Withings Body Cardio Wi-Fi scale is capable of measuring your BMI, body fat, muscle, bone mass and water measurements better than any other smart scale out there. In fact, it’s the only scale that can do all of these measurements.It transfers data between to your phone using Wi-Fi and can use Apple’s built-in Health app to keep track of your measurements. It’s rated 4-stars from over 200 reviews on Amazon with most users being very satisfied with the scale.What’s also cool is that this scale works with up to eight different people and somehow it knows exactly who’s on the scale.  This means that even if you have a pretty large family, you don’t have to get multiple scales.Here’s what one reviewer had to say:This scale is freaking awesome. It arrived faster than expected. Mine is black,

more genes turned on when plants compete

A clover can potentially unlock secrets on plant interactions around the globe. Credit: Michigan State UniversitySome people travel to northern California for wine. However, Maren Friesen, Michigan State University plant biologist, treks to the Golden State for clover.
The lessons of plant diversity and competition learned from a clover patch, which are featured in a special issue of the Journal of Ecology, can potentially unlock secrets on plant interactions around the globe."There's something quite special in how clover assemble such diverse communities. They compete, yet they have many traits in common due to shared ancestry," Friesen said. "Native Californian Trifolium represents a special system for understanding competitive interactions among close relatives. We'd like to understan

new ab2 bus will run from boulder junction to dia

Those still bitter over the continued absence of train connectivity through Boulder Junction will soon receive a small consolation prize.Starting Monday, RTD will launch a new bus route from Boulder Junction to  Denver International Airport, according to a news release.The route will be a cousin of the current AB line, which runs from downtown Boulder to the airport, making several stops along Broadway and Table Mesa Drive.It's been named the AB2, and it will leave from the Depot Square Station in Boulder Junction, head south on 28th Street, stop on the east side of CU's main campus and again at the Table Mesa Park-n-Ride, before continuing to U.S. 36.According to the release, the AB2 will start with four trips during peak travel hours — two in the morning, at 7 and 8, and two in the eveni

significant price erosion in us takes toll on sun pharma

Ujjval Jauhari  | 
Mumbai  May 27, 2017 Last Updated at 01:11 IST

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