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BQ 3A News > Blog > USA > Dune patterns in California barren region dangle clues that assist researchers map Mars’ transferring sands
USA

Dune patterns in California barren region dangle clues that assist researchers map Mars’ transferring sands

July 10, 2025
Dune patterns in California barren region dangle clues that assist researchers map Mars’ transferring sands
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Our two-person crew loaded the automobile with a GPS, a drone, notebooks, pattern luggage, a trowel and a flat spatula lovingly known as a scoopula. Then we drove half-hour in our rented truck from Yuma, Arizona, to the Algodones Dunes, a sandy box bordering California, Arizona and Mexico. The day used to be sunny, with a powerful breeze. Turning off the freeway, we in moderation headed onto a gravelly trail that acted as our street.

After making first rate – if bumpy – growth, we pulled off onto the sand residences and drove slowly towards the dunes, anxious we would possibly get caught within the sand. Having arrived at the outskirts of the Algodones, we stopped and loaded our backpacks, then activate into the barren region on foot.

The coarse- and fine-grained sand on the Algodones Dunes.
Lauren Berger

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It used to be November 2022. As a graduate scholar at Texas A&M College, I used to be starting a part of my Ph.D. analysis with my adviser, geology professor Ryan Ewing. We have been in search of coarse-grained sand ripples, which can be patterned piles of sand formed by way of wind. Sand ripples and sand dunes are sorts of aeolian bedforms, which can be wind-created geologic options.

Aeolian bedforms are commonplace on Earth and around the sun machine, together with on Mars, Venus, Pluto, the Saturn moon Titan, the Neptune moon Triton, and Comet 67P. Those geological options, a few of the first landforms noticed by way of faraway pictures of planetary surfaces, are tough signs of a global’s wind patterns.

A woman in the desert, near a tripod and a GPS target.

Flying a drone at Algodones. Notice the GPS at the tripod, and a GPS goal at the flooring, which used to be additionally a touchdown pad for the drone.
Ryan Ewing

Measuring sand patterns in user

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The shapes and patterns of aeolian bedforms can expose the environmental prerequisites that created them.

Two sizes of the similar bedform, corresponding to small dunes on most sensible of huge dunes, are known as compound bedforms. I find out about compound bedforms at two scales – the meter- and centimeter-sized coarse-grained ripples on the dunes right here on Earth, and the kilometer- and meter-sized dunes on Mars.

On the Algodones, I measured the peak of each and every massive coarse-grained sand ripple and the gap between neighboring ripples. Then we flew our drone low and stable, above the ripples, to create high-resolution pictures. The drone knowledge permits us to do additional measurements at the ripples later, again at my table.

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On that day, I discovered an very important rule of fieldwork within the barren region: Don’t omit a shovel. Differently, in case your car will get caught, as ours did, you’ll must dig it out by way of hand. Fortuitously for us, a dune buggy driving force passing by way of helped us out and we have been in a position to get again to Yuma in dinner time.

Four aerial photographs of sand ripples.

Prime-resolution drone pictures of the sand ripples at Algodones.
Lauren Berger

My creation to Mars

I first become eager about aeolian bedforms all over my sophomore 12 months of school, once I interned on the NASA Jet Propulsion Laboratory. My process used to be to view floor pictures of Mars after which map the sand ripples within the areas the place Perseverance, the Mars rover, would possibly land. I assessed the spaces the place ripples may well be hazards – puts the place the rover may get caught within the sand, the best way our condo truck did within the Algodones.

I mapped the ones sand ripples on Mars for 2 years. However whilst I mapped, I become excited about the patterns the ripples made.

A black and white aerial image of a dune on Mars.

A possible compound dune on Mars.
NASA/JPL-Caltech

Now, as a graduate scholar and aspiring planetary geologist, my time is divided between paintings within the box and at my pc, the place I’ve stitched in combination the drone’s pictures of the Algodones to create a big symbol of all of the find out about house. I then search for compound dunes at the Martian floor in pictures taken by way of the Mars reconnaissance orbiter’s context digicam.

Scientists already find out about Earth’s climate patterns, sand grain measurement and wind knowledge. Via measuring other portions of bedforms on each planets – corresponding to their top, form and spacing – I will be able to evaluate the similarities and variations of the bedforms to search out clues to the wind patterns, grains and environment on Mars. Slowly however unquestionably, as I pay attention to Studio Ghibli soundtracks, I’m developing the primary database of compound dunes on Mars.

A black and white aerial images of dune fields on Mars.

Two dune fields on Mars, each within an affect crater.
NASA/JPL-Caltech

Creating this database is very important to the proposed human challenge to Mars. Mud storms are common, and a few can encircle all of the planet. Figuring out aeolian bedforms will assist scientists know the place to position bases so that they don’t get buried by way of transferring sand.

It’s glorious to spend a day ping-ponging far and wide a planet that’s 140 million miles from us, seeing beautiful terrain whilst I take a look at to reply to questions in regards to the compound dunes on Mars. How commonplace are they? The place do they shape? How do they evaluate to these on Earth? I’m hoping to reply to those questions as I paintings towards incomes my Ph.D in geology.

TAGGED:CaliforniacluesDesertduneholdmapMarspatternsresearcherssandsshifting
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