home    corporate Fugro website    contact us  
 
  solutions    deliverables    IFSAR technology    events    downloads    
 

Archive for the ‘Science’ Category

International Year of the Forests

Tuesday, January 25th, 2011

I once heard, ‘In order to have a healthy planet, we need to have healthy forests’. Deforestation has been a global issue for decades. In the 1800’s and 1900’s Europe, Russia, North Africa, and the Middle East had a vast amount of deforestation, but within the past decade theses regions have stabilized and re-growth is now beginning to occur. Today the majority of deforestation has and continues to occur in the taiga and tropical regions where the vast amount of our world’s forest lives. To raise awareness on sustainable management, development, and conservation of all types of forests, the United Nations declared 2011 the International Year of the Forests.

So what needs to be done to help assess and manage our global forests and what tools do we need to get started?

Firstly, we need to have accurate, up-to-date maps of our forests. Forested areas cover roughly 30% of the world’s surface, that’s about 40 million km². The forested areas are not spread evenly throughout the world, nor is it located within the same climatic regions. With a high percentage begin spread among taiga regions (North America and Russia) and tropical regions (South America and Southeast Asia) that have a large difference in climate and environment. Mapping these regions can be extremely difficult due to rugged terrain, extreme climate and weather conditions, consistent cloud cover, and triple canopy forest. As we all know, Fugro’s GeoSAR (Dual Band IFSAR mapping system) is known for resolving these mapping challenges as well as being best suited for large are mapping.

GeoSAR’s unique technology supports the collection, analysis, assessment, and management of forests and carbon estimation on a country-wide basis. With it’s foliage penetrating technology (P-band), GeoSAR is unique in it’s ability to derive detailed accurate terrain data in the thickest forests and densest jungles. The difference between the X-band and P-band data provides important information that is used to develop value-added data sets such as land use/land cover and biomass estimates. Combined with ground truth data and satellite monitoring, this information is found to be extremely valuable for the assessment and management of our global forest.

GeoSAR not only provides the technology necessary for accurately mapping these difficult environments but also can provide value- added products found necessary for forest assessment and management when combined with satellite imagery that provide essential monitoring capabilities. Below you will find an example of biomass estimation collected over a tropical region generated from GeoSAR data. Do your part in spreading the awareness for the International Year of the Forests, and please remember ‘In order to have a healthy plant, we need to have healthy forest’. Please feel free to leave a comment or request further information!

Biomass Estimation. The difference between GeoSAR's X-band and P-band data is used to calculate biomass estimations. Higher levels are shown with brighter colors.

Winter Weather Is No Match For GeoSAR

Thursday, December 23rd, 2010

With the holidays right around the corner, it’s hard not to notice the severe weather situations occurring world wide. From all parts of the US and across Western Europe, heavy snow fall and freezing temperatures are fulfilling many wishes for a White Christmas this year…as well as creating havoc for Holiday travelers. As we watched the news coverage, my 6-year old turned to me and asked, "Mom, how is Santa going to find those kids’ houses under all that snow?"

That’s when I started thinking about GeoSAR’s ability to "see" through snow and ice

In early fall, GeoSAR took flight in Alaska to begin collecting data for the Alaska Statewide project. GeoSAR is a perfect candidate for mapping large remote areas with rugged terrain, cloud cover, and forest canopy. Accurate elevation data and cloud-free imagery are essential for a broad range of mapping applications in Alaska.

As the data came in, GeoSAR’s science and research team also noticed how GeoSAR’s P-band radar penetrated through the dry snow and ice to reveal the underlying rock and moraine. Although we still have to validate and quantify this capability through further analysis and ground truthing, preliminary results do seem to indicate that snow and ice penetration is in fact possible with GeoSAR. The image below provides a small glimpse of these exciting results! It is a view of a glacier in Alaska as seen through GeoSAR’s X- and P-bands.

To all of our readers, have wonderful holiday season and stay tuned for more GeoSAR news in 2011!

P-band data (left) penetrates through the snow and ice.

P-band data (left) penetrates through the snow and ice.

GeoSAR 101 Crossword

Friday, April 16th, 2010

This week we decided to have fun with our GeoSAR blog readers! All the answers to the crossword below can be found within the GeoSAR website and/or previous GeoSAR blogs. Good Luck! Answers will be posted next week. Please click on the link below to download the puzzle and clues! For any questions or hints please feel free to write to info@geosar.com.

GeoSAR Crossword Puzzle

From Snow to Sand: The Benefits of Dual-Band IFSAR

Thursday, April 1st, 2010

The conference trail grows longer! At last post, we had just returned from the Alaska Surveying and Mapping Conference in Anchorage where GeoSAR Project Manager Steven Shaffer presented the applications of dual-band IFSAR in arctic and sub-arctic environments. Snow penetration/mapping was part of that discussion. This week we are switching gears—rather dramatically—to the Map Middle East Conference in Dubai where last week GeoSAR Client Program Manager Caroline Tyra presented a paper on the ability of radar to penetrate sand for subsurface mapping.

The overall concept isn’t exactly new. Ground penetrating radar (GPR) technology, which utilizes radar bands in the UHF/VHF frequencies from hand-held or vehicular-based equipment, is a well established technique. It’s the use of remote sensing platforms for subsurface mapping that is gaining ground (no pun intended!). Using satellite and airborne methods, it is possible to provide wide-area coverage of subsurface hydrology and structures for use in mineral exploration and development, infrastructure design, and archeological research.

So where is the science? In the early 1980s, the hyper-arid Bir Safsaf region in southwestern Egypt was mapped using Shutte Radar SIR-A and SIR-B to detect geologic structures covered by layers of sand. Discoveries from that research included fossil river systems. More recent studies have shown the ability of very low-frequency radar, such as P-band, to penetrate depths of 15 meters or more depending on soil composition, radar incidence angles, and soil moisture.

Fugro EarthData has confirmed these P-band findings using GeoSAR during a mission over the Mojave Desert near Edwards Air Force Base. Among other things, the results revealed a mostly submerged geological formation. Subsurface mapping is an area we’ll continue to research given its many implications related to water networks, national security, and heritage management. It’s also one more way that we can help clients maximize the value of their GeoSAR data—by unlocking what we call, “the Power of P”.

Want to continue the conversation? Leave a comment or send us an email at info@geosar.com.

Remote Sensing and Climate Change: Introducing a Three-Part Series

Friday, November 20th, 2009

COP-15

Next month, leaders from 193 countries will meet in Copenhagen to participate in the United Nations Climate Change Conference of Parties (COP-15). There’s a lot of attention on this year’s meeting as participants work to craft an ambitious global climate agreement that will begin in 2012 when the first commitment period under the Kyoto Protocol expires. Whether there is enough support to bring about a binding agreement at COP-15 is doubtful, however. Recent statements from the United States and elsewhere indicate there are still too many questions yet to be resolved. Even so, many see the conference as an ideal place to tackle the issues of “burden sharing” and related concerns so that an agreement can be signed in 2010, if not 2009.

So what has this got to do with a geospatial blog? Quite a lot, actually. A quick visit to the “Methods & Science” section of the UN Conference on Climate Change website shows several areas where remote sensing technologies will play an important role in the developing carbon market. Most notable is REDD, short for “reducing emissions from deforestation and forest degradation in developing countries”. We’ve written about REDD before on this blog, and we’ll be paying more attention to it in the coming weeks as we begin a three-part series on climate change leading up to COP-15.

Topics in our series will include geospatial capabilities for carbon monitoring, with an emphasis on radar; legislation that will impact climate change policy both in the United States and abroad; and the push for REDD approval.

We hope you’ll log on and contribute to the discussion, which will be facilitated by GeoSAR Client Program Manager, Caroline Tyra, our resident expert in all things carbon. If there is a climate change topic not mentioned here, that you’d like us to address, let us know and we’ll be sure to tackle it.

Nobel Prizes: A Win for Geospatial

Friday, October 16th, 2009

This year’s Nobel Prizes are getting a lot of attention. Who hasn’t yet heard the controversy surrounding President Obama’s award of the Peace Prize? You would have to be on a desert island to miss the continuing coverage.

On the science front, the awards are much more straightforward. The Nobel Prize in Physics was awarded to three men whose work in the 1960s made a huge impact on the geospatial industry today. Dr. Charles Kao won for his pioneering role in fiber optic telecommunications. Without his efforts there would have been no internet boom, no online mapping craze, no words being written and read on this blog.

The other two winners, Mr. Willard Boyle and Mr. George Smith, were honored for their creation of the charged-couple device (CCD) in 1969. This technology became the basis for today’s digital cameras, as well as those very high-tech imaging sensors used on satellites and aircraft to map and monitor the Earth’s surface.

Three cheers for these fine contributions and for the committee’s recognition of their importance. The awards are questionable neither in worthiness nor in timing.

Perhaps radar achievements will be recognized next!