The Paris Agreement, aimed at combating global warming, sets the target of limiting temperature rise to below 1.5℃. Japan is also striving to achieve carbon neutrality by 2050.
The International Energy Agency (IEA) estimates that around 15% of CO2 emissions must be reduced through carbon capture and storage (CCS) to keep the Earth’s temperature increase below 1.5 degrees Celsius. This calculation suggests that approximately 6,000 sites worldwide would be necessary to store 1 million tons of CO2 annually. Japan also aims to reduce CO2 emissions by 120 to 240 million tons by 2050 through underground CO2 storage. Therefore, realizing CCS is an urgent challenge both in Japan and globally.
To encourage the widespread adoption of CCS, concerns about CO2 leakage and induced seismicity have emerged. Mechanisms for continuous monitoring of CO2 storage conditions are essential to address these issues and ensure safety.
Conventional monitoring methods have typically relied on large seismic source equipment, with costs reaching tens to hundreds of millions of yen per survey. As a result, it was challenging to conduct monitoring surveys repeatedly and to continuously capture the behavior of stored CO2, leading to a risk of being unable to respond promptly to sudden CO2 leaks.
PASS (Portable Active Seismic Source) developed by the Tsuji Laboratory at the University of Tokyo, is an ultra-compact and cost-effective device. It allows for the continuous deployment of multiple PASS units at CO2 storage sites, including hard-to-reach locations, enabling the detection of sudden movements of CO2.
PASS can be utilized not only for CCS but also for monitoring energy resources like geothermal development, oil and natural gas, and civil engineering structures such as embankments and tunnels. The Tsuji Laboratory at the University of Tokyo is also researching the application of PASS for exploration in space, including the Moon and Mars.
WAVELET aims to deploy the small seismic source device PASS across various fields, contributing to the realization of a sustainable society.

Member
Tomoyuki Iwamoto
CEO
Graduated with a Master’s degree in Agricultural and Life Sciences from Osaka Prefecture University Graduate School.
Gained experience at Marubeni Corporation, working across the nuclear power, renewable energy, and natural gas development sectors.
Later held positions within a foreign IPP company before being appointed CEO of our company in November 2024.
Raised amid the rich natural environment of Shimane Prefecture and supported by the local community, he is committed to contributing to environmental conservation, as well as social and regional development through his work.
In his free time, he enjoys being with his three children and often visits the gym and a local public bath.
Luigi Clavareau
Head of Int’l Business Development & Ops
Petroleum geologist and surface geochemist with over 25 years of experience in hydrocarbons, hydrogen, helium, geothermal energy exploration, and contaminated site evaluation across more than 56 countries. His expertise spans field data acquisition, laboratory analysis, statistical interpretation, geological modeling, and the integration of geochemical, microbiological, geophysical, and GIS data into comprehensive reports.
Beyond geoscience, he brings extensive experience in business development strategies and marketing, supported by a strong background in project management, logistics, international mobilization of equipment and personnel, budgeting, security, HSE compliance, and environmental and social impact studies.
Business & Management Experience
Co-founded contributed to the establishment service companies & laboratories across:
- France & the USA
- South America (Colombia, Argentina)
- Southeast Asia (Malaysia, Singapore)
- The Middle East
Akihisa Takahashi
Executive Fellow
He holds a Ph.D. in Engineering from Kyoto University.
After earning his B.S. and M.S. degrees in geophysics from Tohoku University, he joined JAPEX, where he served as an Executive Officer in the Environment & New Technology Division.
As an exploration geophysicist, he also contributes to research and educational activities in both corporate and academic settings.
His favorite word is “curiosity.”
Kyoto University Graduate School of Engineering, Department of Urban and Infrastructure Engineering, Doctoral Program (PhD in Engineering)
Takeshi Tsuji
Chief Scientist
He is a professor in the Department of Systems Innovation at the Graduate School of Engineering, the University of Tokyo. His research focuses on developing exploration technologies for imaging subsurface structures on Earth, the Moon, and Mars, as well as monitoring technologies to detect underground movements. Recognizing global warming as an urgent, planet-scale issue, he has recently centered his work on Carbon Capture and Storage (CCS) and energy solutions. In his free time, he enjoys relaxing at hot springs.
PhD. of Science, the University of Tokyo
Shu Shimada
Outside Director
Company Profile
| Company name | Wavelet, Inc. |
| Address | Sumitomo Fudosan Iidabashi Building 3F, Room 6, 2-3-21 Koraku, Bunkyo-ku,Tokyo, 112-0004, JAPAN |
| Tel | 03-6265-1957 |
| Establishment | July, 2022 |
| Representative director | Tomoyuki Iwamoto |
| Director | Akihisa Takahashi, Shu Shimada, Takeshi Tsuji |
| Business details | Technical services for environmental monitoring using vibration measurement |
| Corresponding bank | Sumitomo Mitsui Banking Corporation, Saikyo Shinkin Bank |

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